CN112238321A - Reverse stop device of chain - Google Patents

Abstract

The invention provides a chain reverse limiting device, which comprises a base, wherein the base is provided with: the chain locking piece is provided with a clamping end for clamping into the chain link gap; the clamping end is provided with a passing station which rotates when the chain moves forwards so as to allow the chain to pass through, and a locking station which is clamped into the gap of the chain link to lock the chain when the chain moves backwards; the base is also provided with an anti-deviation piece, and the anti-deviation piece comprises a blocking surface opposite to the clamping end; a chain running space for a chain to pass through is formed between the blocking surface and the clamping-in end, and a loading port communicated with the chain running space and used for loading the chain into the chain running space is formed at one side of the blocking surface and the clamping-in end. Has the advantages that: realized spacing the chain backward, utilized the card to enter the end and blockked the spacing mode of a pair of one of face, simplified the structure, made the chain need not to overcome too much chain latch fitting's reaction force when removing, be favorable to the chain to remove smoothly, reduced chain wearing and tearing, the chain can be followed the side direction and packed into by the loading mouth and walked in the chain space simultaneously, and the installation is very convenient.

Description

Reverse stop device of chain

Technical Field

The invention relates to a chain reverse limiting device.

Background

The large arm of the crane needs to be overturned and welded on the overturning welding machine, the overturning is realized through the movement of the chain, the mass of the large arm of the crane is large, the inertia overturning is easily caused in the overturning process, the chain is moved up and down, the chain is abraded, and a series of safety problems are easily caused.

The utility model discloses a chinese utility model patent that grant notice number is CN207514169U discloses a rotary type chain safety spare (be a reverse stop device of chain promptly), the device includes the mounting panel and locates the main part on the mounting panel, the both sides of main part respectively are equipped with a side spacing piece, connect through the connecting plate between side spacing piece and the main part, side spacing piece, main part and connecting plate enclose into the chain space of walking that supplies the chain to pass through, it is provided with rotatable fixture block respectively on the lateral wall of side spacing piece and main part to walk in the chain space, the fixture block is arranged in the space of card income chain link, when the chain forward motion, the fixture block receives chain thrust and produces the rotation, do not influence the normal removal of chain, when the chain backward motion, the fixture block is gone into the space of chain link under the effort of torsional spring, prevent the chain backward motion, lock it.

Although the device can realize reverse limiting of the chain, the clamping blocks are positioned on the left side and the right side of the chain, three clamping blocks are arranged on two sides in an alternating mode, the three clamping blocks are clamped into the gaps of the chain links from the left side and the right side simultaneously, namely the deflection of the chain in the left-right direction is completely limited by the clamping blocks, the structure is not only complex, but also the chain overcomes the reaction force of three clamping block torsional springs when moving, the movement resistance is increased, and meanwhile, the abrasion of the chain is aggravated. In addition, when the chain is installed, the chain is cut off, so that one end of the chain penetrates through the three clamping blocks from bottom to top, or the three clamping blocks need to be rotated to the limit position simultaneously, a space is provided for the chain, the operation is difficult to control, and the chain can not be installed by one person or even can not be completed, so that the installation is very inconvenient.

Disclosure of Invention

The invention aims to provide a chain reverse limiting device which is simple in structure and convenient to install.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a reverse stop device of chain, includes the base, is provided with on the base:

the chain locking piece is rotatably arranged on the base at a certain rotating angle and is provided with a clamping end for clamping into a chain link gap of the chain;

the clamping end is provided with a passing station which rotates under the thrust of the chain when the chain moves forwards so as to allow the chain to pass through, and a locking station which is clamped into the gap of the chain link when the chain moves backwards so as to lock the chain;

the card of chain latch fitting holds the overhang in the outside of base, still is provided with on the base:

the deviation preventing piece is used for preventing the chain from deviating and comprises a blocking surface which is arranged opposite to the clamped-in end and used for preventing the chain from swinging towards the direction far away from the clamped-in end;

the chain feeding space for the chain to pass through is formed between the blocking surface and the clamping end, and a loading opening communicated with the chain feeding space and used for loading the chain into the chain feeding space is formed in one side of the blocking surface and the clamping end.

The beneficial effects of the above technical scheme are that: the base is also provided with an anti-deviation piece which comprises a blocking surface arranged opposite to the clamped-in end, and a chain running space for a chain to pass through is formed between the blocking surface and the clamped-in end, namely, the chain running space is not formed by arranging chain locking pieces on two sides, but one side is provided with a chain locking piece, and the other opposite side is provided with a blocking surface, so that the reverse limiting of the chain is realized, and the swinging of the chain to the direction far away from the clamped-in end is limited, in other words, the invention utilizes a one-to-one limiting mode of the clamping end and the blocking surface, so that the structure is simplified, the reaction force of the chain locking piece does not need to be overcome when the chain moves, the smooth moving of the chain is facilitated, the abrasion of the chain can be reduced, and meanwhile, a loading port for the chain to be loaded into the chain running space and communicated with the chain running space is formed on one side of the blocking surface and the clamped-in, just so need not to cut the chain and pass the chain space from bottom to top or top-down, also need not to rotate too much chain latch fitting simultaneously, only need with block that one chain latch fitting that the face is relative rotates to pass through the station, can pack into the chain space of walking by the loading mouth with the chain from the side direction, the installation is very convenient.

Further, for the convenience of the setting of base and the rotation installation of chain latch fitting, the base includes that two risers of bottom plate and parallel interval fix on the bottom plate are provided with the fixed axle between two risers, and the chain latch fitting has the connecting portion of being connected with the base rotation, and connecting portion are located between two risers, and are provided with the through-hole that supplies the fixed axle to pass on the connecting portion to supply the chain latch fitting to rotate around the fixed axle.

Furthermore, in order to facilitate the installation and fixation of the fixing shaft, the fixing shaft is arranged on the two vertical plates in a penetrating manner, through holes for the fixing shaft to penetrate are respectively formed in the two vertical plates, one end of the fixing shaft is a big head end in blocking fit with the side face of one vertical plate, and the small head end of the other end of the fixing shaft is fixedly connected with the other vertical plate through a fastening piece.

Furthermore, in order to facilitate the configuration of the fastening piece and the processing of the fixing shaft, a threaded hole is formed in the small head end of the fixing shaft, and the fastening piece is a bolt.

Furthermore, in order to facilitate the position and angle adjustment of the deviation preventing piece through the fixing shaft and improve the applicability, the deviation preventing piece is fixedly connected with the large end of the fixing shaft.

Further, for the convenience to carry on spacingly to the counter rotation limit of chain latch fitting, simplify the structure, convenient processing, the bottom plate still is provided with the fender axle that is used for restricting the counter rotation limit of chain latch fitting, keeps off the axis of axle and is parallel with the axis of rotation of chain latch fitting.

Further, in order to simplify the structure of the anti-deviation piece, the anti-deviation piece is an anti-deviation rod of an L-shaped structure, the long edge of the anti-deviation rod is fixed on the base, the short edge of the anti-deviation rod is arranged opposite to the clamping-in end, and the blocking surface is formed by the surface of the short edge.

Further, in order to save the elastic component that resets, simplify the reverse stop device's of chain structure, card end in passing through the station when chain latch fitting upwards rotates, card end in the station that dies of lock when chain latch fitting rotates downwards, the focus of chain latch fitting is located the one side that is close to the card end of rotation center to make chain latch fitting can reset by dead weight rotation downwards.

Drawings

FIG. 1 is a view (one view) showing a state of use of the reverse chain stopper of the present invention;

FIG. 2 is a view showing a state of use (another view angle) of the reverse chain stopper according to the present invention;

FIG. 3 is a perspective view (a view) of the reverse chain stopper of the present invention;

FIG. 4 is a perspective view (another view) of the reverse chain stopper of the present invention;

FIG. 5 is a perspective view (still another view) of the reverse chain limiter of the present invention;

fig. 6 is an exploded view of the chain reverse direction stopper of the present invention.

In the figure: 1. a base plate; 2. and a left vertical plate. 3. A right vertical plate; 4. a fixed shaft; 5. a base plate; 6. a chain locking plate; 61. a bevel; 62. a plane; 7. an anti-deviation rod; 8. a blocking shaft; 9. a bolt; 10. a chain; 11. an elastic washer; 12. a chain walking space; 13. and (6) loading into a port.

Detailed Description

One embodiment of the chain reverse limiting device disclosed by the invention is shown in fig. 1-6 and comprises a base and a chain locking piece rotatably arranged on the base at a certain rotating angle, wherein the base comprises a bottom plate 1 used for being fixed on other equipment in use and two vertical plates which are welded and fixed on the bottom plate 1 and are arranged in parallel at intervals, namely a left vertical plate 2 and a right vertical plate 3. The left vertical plate 2 and the right vertical plate 3 are provided with a fixing shaft 4, as shown in fig. 6, the fixing shaft 4 is in a stepped shaft shape, the left end is a big end, the right end is a small end, the fixing shaft 4 is mounted on the two vertical plates in a penetrating manner, the two vertical plates are respectively provided with a through hole for the fixing shaft 4 to penetrate, the big end is matched with the side face of the left vertical plate 2 in a blocking manner, and the small end is fixedly connected with the right vertical plate 3 through a fastener.

Specifically, a threaded hole is processed in the small end of the fixing shaft 4, the end face of the small end is flush with the side face of the right vertical plate 3, the fastening piece is provided with a bolt 9, the bolt 9 is in threaded connection with the small end of the fixing shaft 4, and in order to guarantee the fixing effect of the fixing shaft 3, a base plate 5 and an elastic washer 11 are respectively arranged on the bolt 9 in a penetrating mode.

The chain latch fitting in this embodiment is chain jam plate 6, and chain jam plate 6 has the connecting portion of being connected with the base rotation, and connecting portion are located between two risers, and are provided with the through-hole that supplies fixed axle 4 to pass on the connecting portion to supply chain jam plate 6 around fixed axle 4 free rotation.

As shown in fig. 1 and 2, the chain lock plate 6 further has a click-in end for clicking into a link gap of the chain 10, the click-in end overhanging the outside of the base, the click-in end having a passing position where the chain is pushed by the chain to rotate for passing through when the chain moves in the forward direction (upward movement in the present embodiment), and a locking position where the chain is clicked into the link gap to lock the chain when the chain moves in the reverse direction (downward movement). The clamping end is provided with a contact surface facing the forward moving direction of the chain and used for being in sliding contact fit with each chain link when the clamping end passes through the station, namely an inclined surface 61 at the bottom, and the clamping end is also provided with a stop surface facing away from the forward moving direction of the chain and used for being in stop fit with the chain link when the clamping end is at the locking station, namely a plane 62 at the top.

Therefore, the click end is located at the passing-through position when the chain lock plate 6 is rotated upward, and the click end is located at the deadlocking position when the chain lock plate 6 is rotated downward, and the center of gravity of the chain lock plate 6 is located at the side of the rotation center close to the click end, so that the angle at which the chain lock plate 6 is rotated upward is limited by gravity, and the chain lock plate 6 can be rotated downward by its own weight to be reset. In order to limit the downward rotation limit of the chain lock plate 6 and enable the clamping end to smoothly lock the chain 10, a blocking shaft 8 is further welded and fixed on the bottom plate 1, the axis of the blocking shaft 8 is parallel to the rotation axis of the chain lock plate 6, and the blocking shaft 8 is located below the chain lock plate 6 and can support and limit the chain lock plate 6.

The reverse stop device of chain is still including setting up the piece of preventing partially that is used for preventing chain 10 beat on the base, prevent partially for fixing the pole 7 of preventing partially on 4 big heads of fixed axle in this embodiment, prevent that the pole 7 of deviating from is L shape structure, including a long limit and a minor face, its long limit welded fastening is served at the big head of fixed axle 4, the minor face overhang is to the front side of chain jam 6 and is held the relative interval setting with the card, the minor face can prevent chain 10 to the direction swing of keeping away from the card end, therefore the surface of minor face has constituted and has blockked the face. Because the deviation prevention rod 7 is fixed on the fixed shaft 4, the fixed shaft 4 can rotate by a certain angle by loosening the bolt 9, so that the position of the deviation prevention rod 7 is adjusted, the short edge of the deviation prevention rod 7 is adjusted to the position which is optimally matched with the clamped end, and the chain is conveniently limited.

As shown in fig. 1, fig. 2, fig. 4 and fig. 5, a chain passing space 12 for the chain 10 to pass through is formed between the short edge of the deviation preventing rod 7 and the clamping end of the chain locking plate 6, the clamping end and the short edge are arranged in a one-to-one opposite manner and are located on the front side and the rear side of the chain 10, so that the chain 10 can be limited reversely, and the phenomenon that the clamping end is locked and fails due to the fact that the chain 10 moves in the direction away from the clamping end is avoided.

In addition, the right sides of the short sides and the clamping-in ends are provided with loading ports 13 which are communicated with the chain running space and used for loading the chains 10 into the chain running space, therefore, when the chains 10 are installed, the chains 10 can be loaded into the chain running space 12 from the side direction through the loading ports 13 only by upwards rotating the chain locking plates 6, then the chain locking plates 6 fall naturally by loosening hands, the clamping-in ends can be clamped into the gaps of the chain links, and the installation is very convenient. It should be noted that, when the chain 10 is installed on a sprocket in use, the gaps on the chain links are engaged with the teeth on the sprocket, as shown in fig. 1 and fig. 2, if the chain 10 is deflected due to insufficient tension, the direction of deflection is only the front-back direction, and no left-right deflection occurs, so the chain can be limited only by matching the chain lock plate 6 with the deflection preventing rod 7, and the structure is greatly simplified.

In addition, in order to ensure the structural strength of the reverse limiting device, reinforcing rib plates are respectively welded and fixed between the baffle shaft 8 and the bottom plate 1, between the two vertical plates and the bottom plate, and between the anti-deviation rod 7 and the big end of the fixed shaft 4.

The chain reverse limiting device can limit the chain reversely and prevent the chain from swinging, has a simple structure, is convenient to install, is reliable to use, is suitable for occasions where the chain can only rotate in one direction, and particularly can prevent the chain from sliding reversely and falling off when a large workpiece is welded on an overturning welding machine and the device is fixed on a rack of the overturning welding machine through the bottom plate during use, so that the construction safety is improved.

In other embodiments of the reverse limiting device of the chain, on the basis of the above embodiment, a torsion spring can also be arranged on the fixing shaft in a penetrating manner, one end of the torsion spring is fixed with the vertical plate, and the other end of the torsion spring is fixed with the chain locking plate, so that when the chain locking plate rotates, the torsion spring is deformed, and the return of the chain locking plate is facilitated.

In other embodiments of the chain reversal limiting device, the chain locking element may be a block-shaped chain locking element instead of a plate-shaped chain locking element.

In other embodiments of the chain reverse limiting device, when the chain does not move upwards but moves horizontally leftwards, the bottom plate can be erected to enable the chain locking piece to be located on the left side of the bottom plate, and the clamping end is located at the passing station when the chain locking piece rotates leftwards, so that a return spring is required to be installed to facilitate the return of the chain locking piece; of course, in other embodiments, the chain reverse limiting device can also be applied to the occasions where the chain moves downwards, rightwards, forwards or backwards, and only the fixing mode of the bottom plate needs to be changed.

In other embodiments of the chain reverse limiting device, the anti-deviation rod may not be fixed on the fixed shaft, for example, may be fixed on the vertical plate, or a cushion block is fixed on the bottom plate, so that the anti-deviation rod is fixed on the cushion block.

In other embodiments of the chain reverse limiting device, the deviation-preventing rod can also be fixed on the right side of the right vertical plate, and the loading port is positioned on the left side at the moment.

In other embodiments of the chain reverse limiting device, the deviation preventing piece may not be an L-shaped rod, for example, an L-shaped plate, and the blocking surface is the side surface of the plate; of course, the anti-deviation piece can be in any other shape as long as it is fixed on the base and a part of the anti-deviation piece is opposite to the clamping end and provides a blocking surface.

In other embodiments of the chain reverse limiting device, the stop shaft on the bottom plate can be replaced by a stop block; of course, the bottom plate may be integrally provided with a boss instead of a stopper or a stopper, or the bottom plate may be flat and a protrusion may be provided at the bottom of the chain lock facing the bottom plate.

In other embodiments of the reverse chain limiting device, the small end of the fixing shaft may not be provided with a threaded hole, but rather the fixing shaft is longer, so that the small end of the fixing shaft penetrates through the right vertical plate, an external thread is processed on the penetrating part, and at the moment, the fastening part is in threaded connection with the fixing shaft through a nut, so that the fixing shaft is fixed on the two vertical plates.

In other embodiments of the reverse stop device of chain, the fixed shaft can also be welded and fixed between the two vertical plates directly, the fixed shaft is not detachable, and the chain locking piece needs to be threaded on the fixed shaft before welding.

In other embodiments of the chain reverse limiting device, the bottom plate can be provided with a fixed table instead of two vertical plates, and the fixed table is provided with a notch for the chain locking piece to rotate and install; or, only one vertical plate is arranged on the bottom plate, a fixed shaft is fixedly welded on the vertical plate, and after the chain locking piece penetrates through the fixed shaft, a cotter pin penetrates through the end part of the fixed shaft to prevent the chain locking piece from falling off.

In other embodiments of the chain reverse limiting device, a bearing may be installed between the chain locker and the fixed shaft to facilitate the rotation of the chain locker.

Claims (8)

1. The utility model provides a reverse stop device of chain, includes the base, is provided with on the base:

the chain locking piece is rotatably arranged on the base at a certain rotating angle and is provided with a clamping end for clamping into a chain link gap of the chain;

the clamping end is provided with a passing station which rotates under the thrust of the chain when the chain moves forwards so as to allow the chain to pass through, and a locking station which is clamped into the gap of the chain link when the chain moves backwards so as to lock the chain;

its characterized in that, the card of chain latch fitting holds the overhang in the outside of base, still is provided with on the base:

the deviation preventing piece is used for preventing the chain from deviating and comprises a blocking surface which is arranged opposite to the clamped-in end and used for preventing the chain from swinging towards the direction far away from the clamped-in end;

the chain feeding space for the chain to pass through is formed between the blocking surface and the clamping end, and a loading opening communicated with the chain feeding space and used for loading the chain into the chain feeding space is formed in one side of the blocking surface and the clamping end.

2. The chain reverse limiting device of claim 1, wherein the base comprises a bottom plate and two vertical plates parallel and spaced to the bottom plate, a fixed shaft is disposed between the two vertical plates, the chain locking member has a connecting portion rotatably connected to the base, the connecting portion is disposed between the two vertical plates, and a through hole for the fixed shaft to pass through is disposed on the connecting portion, so that the chain locking member can rotate around the fixed shaft.

3. The reverse chain limiting device as claimed in claim 2, wherein the fixing shaft is disposed on two vertical plates, the two vertical plates are respectively provided with a through hole for the fixing shaft to pass through, one end of the fixing shaft is a big end engaged with the side surface of one vertical plate, and the small end of the other end is fixedly connected to the other vertical plate through a fastener.

4. The reverse chain limiting device of claim 3, wherein the small end of the fixed shaft is provided with a threaded hole, and the fastening member is a bolt.

5. The chain reverse limiting device of claim 3 or 4, wherein the deviation preventing member is fixedly connected with the big end of the fixing shaft.

6. The apparatus as claimed in any one of claims 2 to 4, wherein the base plate is further provided with a stopper shaft for limiting a reverse rotation limit of the chain locker, and an axis of the stopper shaft is parallel to a rotation axis of the chain locker.

7. The reverse limiting device of any one of claims 1 to 4, wherein the anti-deviation member is an anti-deviation rod with an L-shaped structure, the long side of the anti-deviation rod is fixed on the base, the short side of the anti-deviation rod is opposite to the clamped end, and the blocking surface is formed by the surface of the short side.

8. The reverse chain limiting device as claimed in any one of claims 1 to 4, wherein the locking end is located at the passing position when the chain locking member is rotated upward, the locking end is located at the locking position when the chain locking member is rotated downward, and the center of gravity of the chain locking member is located at a side of the rotation center close to the locking end, so that the chain locking member can be rotated downward by its own weight to be reset.

Images