JPH0753526B2 - Pressing chain - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pressing chain for transmitting power or carrying a transported object by causing adjacent link plates to travel while pressing them.

[Prior Art] To transmit power, a so-called link chain formed by sequentially connecting link plates with pins is often used.

Such a link chain, as typified by a roller chain, winds the chain between a pair of sprocket wheels and rotates the drive side sprocket wheel to pull the chain, and the pulling pulls the chain. Was to rotate. Even when such a chain is used for transportation, the chain on which the package is placed is pulled by the rotation of the sprocket wheel to move the package to the drive side.

[Means for solving problems]

As described above, the conventional chain is configured for pulling, and is not configured to transmit power by moving or move a conveyed object by pressing.

On the other hand, in recent years, demands for transmission and transportation in special atmospheres such as high temperature and acidity are increasing. For example, as shown in FIG. 12, when a cooling tank b is arranged below the furnace body a in a steel quenching furnace, a conveyor c for loading articles has its front end portion d arranged inside the furnace body a. Therefore, it is difficult to install the drive device of the conveyor c in the furnace body a. In such a case, the motor f is conveyed by arranging the drive device g at the rear end portion f of the conveyor c arranged outside the furnace and causing the conventional pulling chain e to travel in the opposite direction. However, in such a transport method, the slack of the chain during chain traveling appears on the transport side,
Conveyance is lacking in stability, and the conveyor c is likely to fail. In addition, the chain e expands and contracts due to temperature changes, but it is difficult to absorb the amount of expansion and contraction on the conveying side and it is difficult to put it to practical use. There has been a demand for the appearance of a chain that can stably operate even under such conditions.

As proposed by Japanese Utility Model Publication No. 54-38428 and disclosed in FIGS. 13 and 14 to solve one of the problems, each of the pins m of the conventional link chain 1 is provided with the guide surfaces n, p at the front and rear portions. And a pressing member r having a protruding portion q protruding in the pitch direction of the chain is attached to one guide surface n,
The link chain 1 can be held linearly by bringing the protrusions q into contact with the adjacent pressing members r, and force is transmitted to the linear chains by pressing.
However, since such a chain is formed by adding a member to the conventional one formed for tensioning, the structure of the chain becomes complicated, and since the projecting portion q projects outward when bending, there is a danger. However, the above problems have not been completely solved.

The present invention is based on the provision of a concave portion and a protruding body that are fitted to the abutting surface and the mutual contact surfaces on the side edges of the link plate, and can achieve stable pressing without wear with a simple structure, thus solving the above-mentioned problems. The purpose is to provide a pressing chain that can be used.

[Means for solving problems]

An embodiment of the means of the present invention that can achieve the above-mentioned object and solve the problems will be described below with reference to the drawings.

1 to 8, the pressing chain 1 of the present invention has a linear portion 5 and a convex curved portion 6 on each side edge 3 and 4 of the link plate 2 that are substantially orthogonal to the longitudinal axis XX of the link plate 2. Forming a contact surface 7 having one side edge 3
A concave portion 12 having a first protrusion 10 and a second protrusion 11 which is open at the side edge 3 and faces the root portion 9 of the opening,
Further, a first bulge portion 14 and a second protrusion 11 which can abut against the first protrusion 10 at the tip of a neck portion 13 protruding from the other side edge 4 and passing through the root portion 9 of the opening. A protrusion 16 is provided having a second bulge 15 that abuts against.

As shown in FIG. 4, the link plate 4 is a thick and substantially rectangular plate body, and abutting surfaces 7 and 7 are formed on both side edges 3 and 4, respectively.

The contact surface 7 is formed by the straight line portion 5 and the curved line portion 6 as described above. The straight line portion 5 is substantially orthogonal to the longitudinal axis X-X passing through substantially the center of the link plate 4 in the longitudinal direction and is located at the side edge. It extends slightly beyond the longitudinal axis X-X from one end. The curved portion 6 is formed as a curved surface which is continuous with the straight portion 5 and curved in a convex shape below the longitudinal axis XX. In this example, the curved portion 6 is formed as an arc having a center on the longitudinal axis XX. Note that the curved portion 6 may be an elliptic curve, a parabolic line, a hyperbola, or any other multidimensional curve as long as it is a convex surface continuous with the linear portion 5.

In this way, the contact surface 7 is formed by the adjacent link plates 2, 2
Link the linear parts 5 to each other and juxtapose them in the longitudinal axis X-X direction so that the link plates 2 and 2 are linearly connected, and when the curved parts 5 are abutted to each other, adjacent links are formed. The plates 2 and 2 are connected in a bent state.

The recess 12 is provided on the one side edge 3.

In this example, the recess 12 is shaped to excavate the link plate 2 along one side 21 of the link plate 2 and opens towards the side edge 3.

The recess 12 also comprises a first projection 10 and a second projection 11 which are arranged at the root 9 of the opening and face each other and project.

The first protrusion 10 is arranged on the curved portion 6 side, and in this example, one end is formed in an arc shape which is continuous with the curved portion 6 and the other end is continuous with the bottom portion 25 of the recess 12. The second protrusion 11 is formed in substantially the same manner as the first protrusion 10 except that the second protrusion 11 is arranged on the side of the linear portion 5, and one end thereof is connected to the linear portion 5.

The protrusion 16 is provided on the other side edge 4 of the link plate 2. In this example, the projecting body 16 projects from the side edge 4 along the one side surface 21 of the link plate 2 and has a thickness substantially equal to the groove depth of the recess 12. The protruding body 16 is provided with a first bulge portion 14 on the curved portion 6 side and a second bulge portion 15 on the linear portion 5 side at the tip of a neck portion 13 extending from the side edge 4. The neck portion 13 is formed to have a dimension substantially equal to the opening dimension of the root portion 9 of the recess 12, so that the neck portion 13 is
Can pass through.

The first bulge portion 14 is continuous with the curved portion 6 and has the second protrusion 11
Has a convex shape formed by an arcuate surface having a radius substantially equal to.

The second bulging portion 15 is disposed slightly forward of the first bulging portion 14 and is formed in a convex curved surface shape. The second bulging portion 15 is formed on the linear portion 5 side through the neck portion 13 having a gentle convex curved surface shape. Connected to.

Further, the first bulging portion 14 collides with the first protrusion 10 to linearly form the adjacent link plates 2 and 2 when the linear portions 5 and 5 of the adjacent link plates 2 and 2 come into contact with each other. While the second bulging portion 15 is positioned at a position where it can be held, the second bulging portion 15 abuts the second protrusion 11 when the curved portions 6, 6 of the adjacent link plates 2 and 2 come into contact with each other, and are adjacent to each other. The link plates 2 and 2 are positioned so that the bending angle between them can be regulated.

In this way, the pressing chain 1 is a state in which the adjacent link plates 2 and 2 are bent at a predetermined angle by merely fitting the recesses of the link plate 2 and the protrusions 16 of the adjacent link plates 2 into each other. Can be engaged with.

In this example, the projecting body 16 has a pin 32 projecting toward the other side surface 22 opposite to the one side surface 21, and the recess 12 penetrates the other side surface 22 while the link plate 2 is bent. An elongated hole-shaped guide hole 33 for guiding the movement of the pin 32 is provided, and by moving the pin 32 along the guide hole 33, the adjacent link plates 2 and 2 can be bent smoothly. The pin 32 and the guide hole 33 may be omitted when the ring plates 2, 2 can be smoothly bent only by the engagement between the recess 12 and the protrusion 116 when the bending angle is small.

Further, cylindrical pin bodies 35, 35 project from the link plate 2 on one side surface 21 and the other side surface of the link plate 2 located substantially at the center of the longitudinal axis X-X. As shown in FIGS. 6 and 7, a pair of sprocket wheels 36,
By engaging with the tooth portions 37 of the 36, the pressing chain 1 can be moved in the pressing direction or the pulling direction.

[Action]

However, as shown in FIG. 8 (a), when the linear portions 5 and 5 of the adjacent link plates 2 and 2 come into contact with each other, the first protrusion 10 of the recess 12 and the first bulge of the protrusion 16 are formed. The portions 14 abut against each other and the link plates 2, 2 can be held in a straight line, so that the link plates 2, ... Which are continuous in a straight line can be easily pressed.

Further, when engaging with the sprocket wheel 36 and the like, as shown in FIG. 8B, the pin 32 of the projecting body 16 is guided by the guide hole 33 on the concave portion 12 side, and the link plate 2 is smoothly bent.

Further, as shown in FIG. 8C, when the curved portions 6, 6 of the adjacent link plates 2, 2 come into contact with each other, the second protrusion 11 of the concave portion 12 and the second expansion of the protrusion 16 are expanded. It collides with the projecting portion 15 and regulates the bending angle between adjacent link plates. Therefore, even in the curved portion where the sprocket wheel is not interposed, the sprocket wheel can be bent with a predetermined radius of curvature and by pressing. Therefore, for example, like a chain for guiding a cable or a hose, it is possible to reciprocate in both push and pull directions by bending one end in a U shape and fixing one end and connecting the other end to a moving member.

As described above, the pressing chain 1 of the present invention can be orbited by the pressing force by being wound between the two sprocket wheels and can be adopted for transmission, and as shown in FIG. By arranging in parallel with each other and placing the transported article W on the link plate, the transported article W can be moved by pressing the chain, and can be suitably adopted even for the transport conditions as shown in FIG.

〔Example〕

9 to 11 show another embodiment of the pressing chain 1 of the present invention.

In this example, the link plate 2 includes a link plate 41 for contact having contact surfaces 7 having straight portions 5 and curved portions 6 on both side edges 3 and 4, respectively, and a first and one side edges 3 and 4 respectively. An engaging link plate 42 provided with a recess 12 having second projections 10 and 11 and a projecting body 16 having first and second bulges 14 and 15 on the other side edge 4 respectively. Consists of.

Further, in this example, the link plates 2 are arranged on both sides of the chain, and the link plates 2 are disposed between the link plates 2 and 2.
A connecting pin 43 is inserted to pass through substantially the center of the. Connection pin 43
Has a body 46 with a circular cross section into which the roller 45 can be fitted, and fitting ends 47, 47 having a rectangular cross section are connected to both ends of the body 46 via steps.

The fitting portion 47 is a square hole 49 that is aligned and opened with the link plate 41 for contact and the link plate 42 for engagement, respectively.
Link plates 41, 42 for abutting and engaging by using nut tool 52 to screw part 51 which can be fitted in 50 and is provided at the tip of fitting part 47.
By tightening together, both are overlapped and fixed,
The link plate 2 can be formed.

The roller 45 can press the chain by meshing with the sprocket wheel, or can be pulled by the reverse rotation of the sprocket wheel without rattling between the link plates.

Further, in the present invention, the pressing chain can be formed by superimposing a plurality of link plates having the above-mentioned structure in multiple layers and connecting them by using a fixture such as a bolt.

As described above, the pressing chain of the present invention can be modified into various modes.

〔The invention's effect〕

As described above, in the pressing chain of the present invention, the contact surface formed by the straight line portion and the curved portion is formed on both side edges of the link plate, and the concave portion having the first and second protrusions is formed on one side edge. The first bulge portion and the curved portion of the adjacent link plate, which are provided and abut against the first protrusion when the adjacent link plate abuts on the other side edge, hold the link plate linearly. When the chain is used for pressing, it does not bend even if the chain is used for pressing because it has a protrusion that abuts the second protrusion when contacting and regulates the bending angle between the link plates. Even if a stable pressing force is applied and a tensile force is applied, the projections and the bulging portions engage with each other without causing rattling and smooth operation. Can be suitably adopted as. Moreover, the number of types of components can be significantly reduced as compared with the conventional structure, and the economic value can be improved.

In the case where the pressing chain of the present invention is used only for pressing, the link plates can be bent while the positions where the adjacent link plates contact each other are displaced from the curved portion when the chain is bent. Since the action force is not transmitted through the pin bush during pressing as described above, wear of the joint portion does not occur and the life of the chain can be remarkably increased, while the compressive strength is greater than the tensile strength. Sintered body, ceramic, cast iron,
It is possible to use materials such as concrete, which can reduce the cost of the chain, and even in fields where tension chains using conventional materials cannot be applied in special atmospheres such as high heat, acid, and alkali. Many excellent effects can be achieved, such as the adoption.

[Brief description of drawings]

1 is a front view showing an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view taken along line AA shown in FIG. 1, and FIG. 4 is a perspective view showing a link plate in detail. 5 and 5 are plan views showing a projecting member of the link plate, FIG. 6 is a front view showing an example of use of the pressing chain of the present invention, FIG. 7 is a sectional view taken along the line BB, and FIG. a) to (c) are diagrams showing the action,
FIG. 10 is a front view showing another embodiment of the present invention, FIG. 10 is a partially sectional plan view of the same, and FIG. 11 is an exploded perspective view showing a main part thereof.
FIG. 12 is a diagram showing an example of an apparatus that can employ the pressing chain of the present invention, FIG. 13 is a plan view showing a conventional example, and FIG. 14 is a side view thereof. 2 ... Link plate, 3 ... One side edge, 4 ... Other side edge, 5 ... Straight line portion, 6 ... Curved portion, 7 ... Contact surface,
9 ... Root part, 10 ... 1st protrusion, 11 ... 2nd protrusion,
12 …… recess, 13 …… neck, 14 …… first bulge, 15 ……
2nd bulging part, 16 ... Projection body, 41 ... Link plate for contact, 42 ... Link plate for engagement.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenro Nakagawa 4-17-88 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Inside Tsubakimoto Chain Co., Ltd. (72) Fumio Ochiai 4--17, Tsurumi, Tsurumi-ku, Osaka-shi, Osaka No.88 Tsubakimoto Chain Co., Ltd. (56) References JP-A-46-5877 (JP, A) Jitsuko-Sho 5-5184 (JP, Y1)

Claims (3)

[Claims] 1. A contact surface having a straight line portion substantially orthogonal to a longitudinal axis of the link plate and a curved portion which is continuous with the straight line portion and curved in a convex shape is formed on each side edge of the link plate. At the same time, one side edge is provided with a concave portion that is open at the side edge and that faces the root of the opening and that includes a first protrusion and a second protrusion, and further, at the other side edge that protrudes from the side edge. And when the linear portions of the adjacent link plates are fitted into the recesses of the adjacent link plates and the tips of the neck portions passing through the roots of the openings come into contact with each other, they abut the first protrusions to form a straight line between the adjacent link plates. -Shaped bulge that can be held in a shape and a second bulge that restricts the bending angle between adjacent link plates by abutting the second protrusion when the curved portions of the adjacent link plates abut each other Provided with a protrusion having a portion Pressing chain, wherein the door. 2. The link plate according to claim 1, wherein the abutting surface and the recess are provided on one side edge, and the abutting surface and the projecting body are provided on the other side edge. Range first
The pressing chain according to the item. 3. The link plate for abutting, wherein the abutting link plate has the abutting surfaces on both side edges thereof, and the concave portion is provided on one side edge and a projecting body is provided on the other side edge. The pressing chain according to claim 1, wherein the pressing chain is formed by superposing it on the link plate.