CN214933148U - Link joint and transmission drag chain - Google Patents

Abstract

The invention discloses a chain plate, which is provided with a front plate part positioned on the outer side of a chain link and a rear plate part positioned on the inner side of the chain link, wherein the front plate part and the rear plate part are arranged in a staggered manner in the thickness direction, and at least one group of clamping parts form a clamping part on the adjacent front plate part and the adjacent rear plate part when a transmission drag chain runs in parallel and along the bending radius. When all adjacent chain plates when the transmission drag chain runs in parallel and adjacent chain plates which rotate to the limit position when the transmission drag chain runs along the bending radius in the bending state, at least one group of clamping positions form the clamping part, so that the combined strength of the chain plates is higher than that of an ordinary drag chain in the two running states, the situation that the drag chain is easy to break or break particularly at the bending part when the drag chain runs is effectively reduced, and the drag chain is reliable, durable and anti-dropping.

Description

Link joint and transmission drag chain

Technical Field

The invention relates to the technical field of drag chains, in particular to a chain plate and a transmission drag chain.

Background

The transmission drag chain is a device for binding cables, electric wires, air pressure pipes or oil pressure pipes and the like to facilitate rotation and movement of the drag chain, and plays a role in traction and protection. The appearance of the transmission drag chain is similar to that of a tank chain, the transmission drag chain is formed by buckling a plurality of unit chain link rings to form a transmission closed loop, the chain links rotate freely, and the transmission drag chain is widely applied to the industries of numerical control electronic equipment, stone machinery, glass machinery, mechanical arms, hoisting and transporting equipment, automatic warehouses and the like. The existing transmission drag chain has no clamping structure, and if the drag chain is overloaded, overweight and long in operation time in the operation process, the drag chain is easy to break or break, so that the drag chain needs to be stopped and repaired to be replaced by a new drag chain, and the traction work efficiency of the drag chain can be seriously influenced.

Disclosure of Invention

The applicant provides a link plate and a transmission drag chain with reasonable structure aiming at the defects that the drag chain is easy to be separated or broken at the bending part in the prior production, when all adjacent link plates in the parallel operation of the transmission drag chain and the adjacent link plates in the bending state of the transmission drag chain along the bending radius are rotated to the limit position, at least one group of clamping parts form a clamping part, the combination strength between the link plates of the drag chain is enhanced, the load of the drag chain is larger, and the condition that the drag chain is easy to be separated or broken at the bending part in the operation is effectively reduced.

The technical scheme and the beneficial effects adopted by the invention are as follows:

a chain plate is provided with a front plate part positioned on the outer side of a chain link and a rear plate part positioned on the inner side of the chain link, wherein the front plate part and the rear plate part are arranged in a staggered mode in the thickness direction, and at least one group of clamping positions form clamping parts on the adjacent front plate part and the adjacent rear plate part when a transmission drag chain runs in parallel and along the bending radius. When all adjacent chain plates when the transmission drag chain runs in parallel and adjacent chain plates which rotate to the limit position when the transmission drag chain runs along the bending radius in the bending state, at least one group of clamping positions form the clamping part, so that the combined strength of the chain plates is higher than that of an ordinary drag chain in the two running states, the situation that the drag chain is easy to break or break particularly at the bending part when the drag chain runs is effectively reduced, and the drag chain is reliable, durable and anti-dropping.

As a further improvement of the above technical solution:

the clamping direction of the clamping part formed when the transmission drag chain runs in parallel is opposite to that of the clamping part formed at the bending limit position when the transmission drag chain runs along the bending radius. The clamping directions are opposite, so that no matter the front plate part and the rear plate part rotate clockwise or anticlockwise relatively, at least one clamping part can be formed at the limit position, and the clamping part has heavy load and high use strength when the clamping part runs in parallel or runs at the limit position with a bending radius.

The clamping directions of two adjacent clamping parts on the front plate part and the rear plate part are different, and the front plate part and the rear plate part rotate relatively to form different clamping parts; a plurality of screens on front plate portion and the back plate portion all are located same circumference. The clamping directions are different, so that the clamping positions in different directions are more uniformly distributed on the chain plates, the stress of the chain plates is more uniform, and the bearing capacity of the chain plates is effectively improved. Realize the joint through rotatory mode for the transmission tow chain all can have the joint portion of strengthening the combination intensity along the extreme angle of bending radius operation, improves the bearing capacity of transmission tow chain when the bending operation. The screens are located same circumference and can realize the more even beneficial effect of atress of link joint equally.

The chain plates forming the clamping parts are arranged at the bending limit positions of the chain plates when the transmission drag chain runs along the bending radius. When the transmission drag chain runs along various bending radiuses, the clamping parts in front of the chain plates at the bending radiuses are separated gradually, the stress of the chain plates with the largest bending angles is large compared with the stress of the chain plates with the small bending angles, and the adjacent chain plates with the largest bending angles rotate to the limit angles relatively, so that new clamping parts are formed, and a part of the chain plates near the chain plates with the largest bending angles can be formed by the new clamping parts, so that the chain plates with the largest bending angles are guaranteed to have better stress strength and bearing capacity.

The periphery of the rear plate part is provided with a clamping sheet, a gap is arranged between the corner part of the clamping sheet and the rear plate part, and the corner part and the gap form a clamping position; the front plate part corresponds the joint piece and has seted up the joint groove, and the joint inslot corresponds the bight and has seted up outside hole, corresponds the breach and has step portion, and outside hole and step portion form a screens.

When two link joint splices together, the joint piece of back plate is located the joint inslot of front plate portion, and the crisscross interlock of bight and step portion forms a joint portion. When the transmission drag chain runs, no matter the transmission drag chain runs in parallel or vertically or runs along a bending radius, two clamping positions symmetrical by taking the circular hole as a symmetrical point on two adjacent chain plates (all adjacent chain plates in a parallel state and adjacent chain plates rotating to a limit position in a bending state) form a clamping part, the corner part of the clamping sheet at the position of the clamping part can slide into the outer hole, the step part can enter the notch, at the moment, the corner part and the step part are meshed together in a staggered way, so that the rear plate is locked in the front plate part, the two adjacent chain plates form clamping force except the lug boss, the circular hole and the upper and lower cross rods, at least one clamping force capable of resisting the longitudinal pressure of the plate surface of the chain plate is arranged on the circular outer circumference, the strength of the drag chain body is greatly improved, and even when a load is loaded, the clamping force on the circumference of the chain plate and at least two positions of the circular center part can ensure the mutual meshing between the chain plates, the abnormal conditions such as fracture, separation, shaking and the like can not occur.

The clamping sheet and the clamping groove are in fan-shaped rings, and the corner part and the step part are respectively positioned on the long arc lines of the clamping sheet and the clamping groove; the arc line of joint groove is greater than the arc line of joint piece, and the width of joint piece is equivalent with the joint groove. Set up the joint structure on the basis of fan annular joint piece and joint groove, not only can realize circumferencial direction's rotation, can set up corresponding joint structure with the help of two relative bights of joint piece simultaneously. The arc line in joint groove is greater than the arc line of joint piece and can make things convenient for the joint piece to insert the joint groove and assemble.

The corner part and the step part are provided with round corners; the corner part and the step part can be in a rectangular, square, round, arc or special-shaped structure. The corner part and the step part have good strength and are not easy to damage after repeated use.

Two joint pieces are symmetrically arranged and two joint grooves are arranged. Two clamping forces capable of resisting longitudinal pressure of the plate surface of the chain plate can be formed when the transmission drag chain runs in parallel and the transmission drag chain runs along the bending radius.

A transmission drag chain adopting the chain plates is formed by connecting a plurality of chain links with the same shape, structure and size end to end, and each group of chain links is formed by assembling two chain plates symmetrically arranged on the left side and the right side and an upper cross rod and a lower cross rod which are orthogonal. The transmission drag chain product made by the chain plate has high chain plate engagement strength, can be used for various high-load operations, can avoid various abnormalities caused by drag chain damage, reduces loss and improves working efficiency.

Drawings

Fig. 1 is a perspective view of a back plate portion of a single link plate of the present invention, which is directed to the paper.

Fig. 2 is a perspective view of the front plate portion of fig. 1, taken on the paper.

Fig. 3 is a front view of fig. 1.

Fig. 4 is a sectional view of section a-a in fig. 3.

FIG. 5 is a perspective view of two links of the present invention joined together.

Fig. 6 is a sectional view of section B-B in fig. 5.

Fig. 7 is a cross-sectional view of section C-C in fig. 5.

In the figure: 1. a front plate portion; 2. a circular hole; 3. a rear plate portion; 4. a clip sheet; 5. a corner portion; 6. a notch; 7. a boss; 8. a step portion; 9. a stepped bore; 10. a clamping groove; 11. a through hole; 12. an outer aperture; 13. an internal bore; 15. a first clamping position; 16. a second card position; 17. a third position; 18. and a fourth position.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

The utility model discloses a transmission drag chain is by a plurality of shapes, form after the chain link end to end connection that structure and size are the same, every group chain link comprises two link joints that left and right sides symmetry set up and two upper and lower horizontal pole assemblies of quadrature, as figure 1, as shown in figure 2, the shape of every link joint, structure and size are all the same, the link joint has the front plate portion 1 that is located the chain link outside and is located the inboard back plate portion 3 of chain link, front plate portion 1 and back plate portion 3 set up in the thickness direction is crisscross, as shown in figure 5, the boss 7 of the back plate portion 3 of the last link joint of the adjacent two sets of link joints in the front and back inserts in the circular port 2 of the front plate portion 1 of next link joint.

As shown in fig. 1, 3 and 4, the back plate part 3 of the chain plate faces outwards, two convex clamping pieces 4 are symmetrically arranged on the periphery of a boss 7, the clamping pieces 4 are in a fan-shaped ring shape, through holes 11 are formed in the back half part 3 at the positions, close to two corner parts 5 on the outer side, of the clamping pieces 4, the through holes 11 do not penetrate through the corner parts 5, the corner parts 5 are enabled to have certain thickness, and meanwhile, gaps 6 are formed between the corner parts 5 and the back plate part 3. As shown in fig. 3, the notch 6 extends slightly beyond the outer edge of the catch 4. As shown in fig. 2, 3 and 4, the front plate portion 1 of the link plate is provided with a fan-shaped snap groove 10 corresponding to the snap piece 4, a stepped hole 9 is provided at a position corresponding to the corner portion 5 outside the snap groove 10, and as shown in fig. 4, the stepped hole 9 has an inner hole 13 located in the front plate portion 1 and an outer hole 12 located in the snap groove 10. The corresponding notch 6 has a step 8 on the front plate 1, the step 8 being flush with the front plate surface and covering the outer hole 12 of most of the step hole 9. The corner part 5 and the step part 8 are both provided with round corners, so that the corner part 5 and the step part 8 are good in strength and not easy to damage after repeated use. The inner hole 13 and the through hole 11 are fabrication holes to facilitate the machining of the outer hole 12 and the notch 6.

As shown in fig. 1 and fig. 2, the bight 5 of back plate portion 3, the breach 6 and the step portion 8 that the front plate portion 1 corresponds, outside hole 12 forms a set of joint portion when the joint, four group's joint portions can be formed in this embodiment, bight 5 on the same joint piece 4, breach 6 sets up along the axis symmetry of joint piece 4, the step portion 8 of front plate portion 1, outside hole 12 sets up along the axis symmetry of joint groove 10, thereby form 4 two liang of relative screens, clockwise or anticlockwise rotation has two joint portions to form the joint when arriving the end on same circumference, the contained angle between the axis of joint piece 4 and the axis of joint groove 10 is 20~40 degrees. As shown in fig. 1, 2, 6, and 7, after the chain plate of fig. 1 is assembled on the chain plate of fig. 2 in a reverse manner, when the chain plate of fig. 1 is rotated clockwise, the first detent 15 and the third detent 17 form a detent portion, and when the chain plate of fig. 1 is rotated counterclockwise, the second detent 16 and the fourth detent 18 form a detent portion, that is, two detents symmetric about the circular hole 2 can form a detent portion. The corner 5 and the step 8 can be rectangular, square, round, arc or other special-shaped structures.

As shown in fig. 5 to 8, when two adjacent link plates are spliced together, the engagement piece 4 of the rear plate portion 3 is inserted into the engagement groove 10 of the front plate portion 1, and the upper surface of the engagement piece abuts against the bottom surface of the engagement groove 10. The width of joint piece 4 is equivalent with joint groove 10 width, because the arc line of joint groove 10 is greater than the arc line of joint piece 4 to and more translation spaces that outside hole 12, breach 6 provided, so joint piece 4 can conveniently assemble and insert joint groove 10, and can be in joint groove 10 with certain angle rotation. The corner 5 is located in the outer hole 12 at the location of the snap-in part and the step 8 is located in the indentation 6. As shown in fig. 6 and 7, when the transmission drag chain runs in parallel, the clamping parts are formed at the positions of the first clamping part 15 and the third clamping part 17, when the transmission drag chain runs along the bending radius, the clamping parts of the first clamping part 15 and the third clamping part 17 are separated, and when the transmission drag chain rotates to the limit angle, the positions of the third clamping part 17 and the fourth clamping part 18 can form new clamping parts, so that the biting force between the chain plates is enhanced, and the load strength of the drag chain is improved.

During the in-service use, insert the joint inslot 10 of front plate portion 1 with the joint piece 4 of back plate portion 3, then make adjacent link joint relative rotation certain angle make adjacent link joint be the parallel state of each other, at this moment, use circular port 2 just to form joint portion for two screens of symmetry point symmetry on two adjacent link joints, bight 5 at the position joint piece 4 of joint portion can slide in outside hole 12, step portion 8 then can get into in breach 6, bight 5 and the crisscross interlock of step portion 8 are in the same place this moment, thereby die rear plate 3 lock in front plate portion 1, with all link joints, the horizontal pole forms the transmission drag chain after the completion of installing in proper order. At the moment, the adjacent two chain plates form clamping force except for the lug bosses 7, the circular holes 2 and the upper and lower cross rods, and at least two clamping forces capable of resisting longitudinal pressure of the surfaces of the chain plates are arranged on the circular outer circumference, so that the strength of the drag chain main body is greatly improved, even if load is borne, the clamping forces on the three positions of the circumference and the circular center of the chain plates can ensure mutual engagement of the chain plates, and abnormal conditions such as fracture, disengagement, shaking and the like cannot occur. When the transmission drag chain runs along various bending radiuses, the clamping parts in front of the chain plates at the bending radiuses are separated gradually, the stress of the chain plates with the largest bending angles is large compared with the stress of the chain plates with the small bending angles, and because the adjacent chain plates with the largest bending angles rotate to the limit angles relatively, two new clamping parts form the clamping parts, and one part of the chain plate near the chain plate with the largest bending angles can form a new clamping part, so that the chain plates at the bending angles are guaranteed to have better stress strength and bearing capacity.

The foregoing description is illustrative of the present invention and is not to be construed as limiting thereof, as the invention may be modified in any manner without departing from the spirit thereof. For example, the clamping portion can be arranged on clamping grooves and clamping pieces in other shapes, and the clamping grooves and the clamping pieces can rotate relatively by a certain angle. Only one group of the clamping sheets and the clamping grooves in the embodiment are arranged, the two clamping parts in the embodiment are arranged on the clamping sheets and the clamping grooves, or the clamping directions of the clamping parts formed by each group of the clamping sheets and the clamping grooves are the same, only the clamping directions of the clamping parts on different groups of the clamping sheets and the clamping grooves are different, so that the invention aims that at least one group of clamping parts form the clamping parts when the transmission drag chain runs in parallel and the transmission drag chain runs along the bending radius can be realized, and only the clamping strength is slightly inferior to that of the two groups of the clamping sheets and the clamping grooves. The purpose of the invention can be achieved by arranging three or more clamping sheets and clamping grooves, and when three or more clamping sheets and clamping grooves are arranged, only one clamping part can be arranged on the clamping sheets and the clamping grooves, and the clamping directions of the clamping parts are staggered, for example, the three clamping sheets and the clamping grooves are arranged to be clamped when the two groups rotate clockwise, and the other group is arranged to be clamped when the other group rotates anticlockwise. The clamping parts are not on the same circumference, so long as the clamping of two adjacent chain plates can be realized.

Claims (10)

1. A link joint, its characterized in that: the chain plate is provided with a front plate part (1) positioned on the outer side of the chain link and a rear plate part (3) positioned on the inner side of the chain link, the front plate part (1) and the rear plate part (3) are arranged in a staggered mode in the thickness direction, and at least one group of clamping parts form clamping parts on the adjacent front plate part (1) and the adjacent rear plate part (3) when the transmission drag chain runs in parallel and along the bending radius.

2. A link plate according to claim 1, wherein: the clamping direction of the clamping part formed when the transmission drag chain runs in parallel is opposite to that of the clamping part formed at the bending limit position when the transmission drag chain runs along the bending radius.

3. A link plate according to claim 1, wherein: the clamping directions of two adjacent clamping parts on the front plate part (1) and the rear plate part (3) are different, and the front plate part (1) and the rear plate part (3) rotate relatively to form the clamping parts by different clamping positions; a plurality of screens on the front board part (1) and the back board part (3) are all positioned on the same circumference.

4. A link plate according to claim 1, wherein: the chain plates forming the clamping parts are arranged at the bending limit positions of the chain plates when the transmission drag chain runs along the bending radius.

5. A link plate according to claim 1, wherein: the periphery of the rear plate part (3) is provided with a clamping sheet (4), a gap (6) is arranged between a corner part (5) of the clamping sheet (4) and the rear plate part (3), and the corner part (5) and the gap (6) form a clamping position; front plate portion (1) has seted up joint groove (10) corresponding joint piece (4), has seted up outside hole (12) corresponding bight (5) in joint groove (10), has step portion (8) corresponding breach (6), and outside hole (12) and step portion (8) form a screens.

6. A link plate according to claim 5, characterized in that: when two link joints splice together, the joint piece (4) of back plate portion (3) are located joint groove (10) of front plate portion (1), and crisscross interlock in bight (5) and step portion (8) forms a joint portion.

7. A link plate according to claim 5, characterized in that: the clamping sheet (4) and the clamping groove (10) are in a fan-shaped ring shape, and the corner part (5) and the step part (8) are respectively positioned on the long arc lines of the clamping sheet (4) and the clamping groove (10); the arc line of the clamping groove (10) is larger than that of the clamping sheet (4), and the width of the clamping sheet (4) is equivalent to that of the clamping groove (10).

8. A link plate according to claim 5, characterized in that: the corner part (5) and the step part (8) are provided with round corners; the corner part (5) and the step part (8) can be in a rectangular, square, round, arc or special-shaped structure.

9. A link plate according to claim 5, characterized in that: the two clamping sheets (4) are symmetrically arranged and are provided with two clamping grooves (10).

10. A driving drag chain using the link plate of claims 1 to 9, characterized in that: the chain is formed by connecting a plurality of chain links with the same shape, structure and size end to end, and each group of chain links is formed by assembling two chain plates symmetrically arranged on the left side and the right side and an orthogonal upper cross rod and an orthogonal lower cross rod.

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