Chain type turning gear

Abstract

The utility model discloses a chain type turning gear. The chain type barring device comprises a connecting block, a connecting cable and a barring rod. A section of connecting cable is connected between every two adjacent connecting blocks; a first lever, a second lever and a positioning rod are arranged on the connecting block, the first lever and the second lever are arranged in the extending direction of the connecting cable during turning, and the positioning rod is located between the first lever and the second lever; the turning rods comprise lever parts and hooking parts, the hooking parts are used for being detachably hooked on the positioning rods, the lever parts are used for abutting against the first lever to apply force in the forward direction to turn the transmission piece or abutting against the second lever to apply force in the reverse direction to turn the transmission piece, and the at least two turning rods are correspondingly arranged on the at least two connecting blocks to alternately turn the transmission piece. According to the chain type barring device, bidirectional barring and continuous barring are achieved, the chain type barring device is fast and convenient to use, barring failure caused by reverse springback of a transmission device is avoided, meanwhile, mechanical injury safety accidents caused by springback are avoided, and personal safety is protected.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical transmission, and in particular to a chain winch. Background Art

[0002] Large rotating machinery such as crushers, fans, and compressors need to be cranked during long-term outages and before startup to loosen parts, eliminate jams, and prevent dynamic balance failure. When crushers, belt conveyors, and other equipment stop due to material blockage, they also need to be manually cranked to remove the blocked material. The cranking operation generally requires turning the transmission shaft, coupling, hydraulic coupling, and other transmission parts to make the main machine run at a low speed to achieve the purpose of cranking. The transmission shafts, couplings, and hydraulic couplings of large machinery are often large in size and connected to loads, making them difficult to rotate by hand. Special cranking tools are required for cranking.

[0003] At present, chain pipe clamps are generally used for unpowered turning operations of large and medium-sized machinery. Chain pipe clamps achieve turning action through mechanical locking and lever principle. Chain pipe clamps have only one fixed handle. After the handle is rotated to the extreme position, it needs to stop and turn again after changing the position. There is a single turning direction and discontinuous turning action, and the application scenarios are limited. When large machinery has load imbalance, material blockage and other conditions, the transmission device will generate a rotational torque opposite to the turning direction, and rebound reversal will occur, which will reduce or completely offset the turning effect. At this time, the transmission device needs to be supported by a crowbar, otherwise the rebound reversal will easily cause mechanical damage and endanger personal safety. Utility Model Content

[0004] The purpose of the present application is to provide a chain winch to solve the problems existing in the prior art, to realize bidirectional winching and continuous winching, to be quick and convenient, to avoid winching failure caused by reverse rebound of the transmission device, and at the same time to avoid mechanical injury safety accidents caused by rebound, thereby protecting personal safety.

[0005] A chain winch provided by the technical solution of the present application comprises at least two connecting blocks, at least two connecting ropes and at least two winch rods; a section of the connecting rope is connected between any two adjacent connecting blocks so as to be locked in a closed loop on a transmission member during winch operation; a first lever, a second lever and a positioning rod are arranged on the connecting block, the first lever and the second lever are arranged along the extension direction of the connecting rope during winch operation, and the positioning rod is located between the first lever and the second lever; the winch rod comprises a connected lever portion and a hook portion, the hook portion is used to be detachably hooked on the positioning rod, the lever portion is used to abut against the first lever to apply a positive force to winch the transmission member or abut against the second lever to apply a reverse force to winch the transmission member, and at least two of the winch rods are correspondingly arranged on at least two connecting blocks to alternately winch the transmission member.

[0006] Optionally, the side of the connecting block facing the transmission member includes a first anti-slip surface and a second anti-slip surface that are connected to each other, and the angle between the first anti-slip surface and the second anti-slip surface is greater than a straight angle.

[0007] Optionally, the first anti-slip surface is provided with first anti-slip teeth, and the second anti-slip surface is provided with second anti-slip teeth.

[0008] Optionally, a connecting rod is installed on the connecting block, and a positioning portion for installing a connecting cable is provided on the connecting rod.

[0009] Optionally, the positioning portion includes a positioning ring or a positioning hook.

[0010] Optionally, the connecting block includes a shell, the shell includes a first connecting plate and a second connecting plate arranged opposite to each other, and a third connecting plate connected between the first connecting plate and the second connecting plate, and the first lever, the second lever and the positioning rod all pass through the first connecting plate and the second connecting plate.

[0011] Optionally, the connecting rope is one of a chain, a rope, and a cloth belt.

[0012] Optionally, the inner surface of the hooking portion is an arc surface, the outer peripheral surface of the positioning rod is an annular surface, and the annular surface is arranged to fit the arc surface.

[0013] Optionally, the transmission member includes a transmission surface, the number of the connecting blocks is four, the four connecting blocks are evenly distributed in the circumference of the transmission surface, and the connecting rope is connected between any two adjacent connecting blocks.

[0014] Optionally, the turning rod further includes a handle portion for applying force.

[0015] The above technical solution has the following beneficial effects:

[0016] The chain winch provided by the present application has a lever portion of the winch rod abutting against the first lever to apply forward force to winch, or abutting against the second lever to apply reverse force to winch, which is quick and convenient, and increases the application occasions of the chain winch through two-way winching. At least two winch rods alternately apply force to the connecting block to drive the transmission part to rotate continuously, so as to achieve continuous winching, avoid winch failure caused by reverse rebound of the transmission part, and at the same time avoid mechanical injury safety accidents caused by rebound of the transmission part, thereby protecting personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a chain turntable in one embodiment of the present application;

[0018] Figure 2This is a structural schematic diagram of a connection block in an embodiment of the present application;

[0019] Figure 3 A transverse cross-sectional view of a connecting block in an embodiment of the present application;

[0020] Figure 4 A longitudinal cross-sectional view of a connecting block in one embodiment of the present application;

[0021] Figure 5 This is a structural schematic diagram of a turning rod in one embodiment of the present application;

[0022] Figure 6 This is a schematic diagram of the structure of the turning rod when turning clockwise in one embodiment of the present application;

[0023] Figure 7 This is a schematic diagram of the structure of the turning rod when turning counterclockwise in one embodiment of the present application;

[0024] Figure 8 This is a schematic diagram of the structure when two turning rods turn clockwise in one embodiment of the present application;

[0025] Fig. 9 This is a schematic diagram of the structure when two turning rods turn counterclockwise in one embodiment of the present application.

[0026] Reference Numbers

[0027] 1-connecting block, 10-first lever, 11-second lever, 12-positioning rod, 13-first anti-slip surface, 130-first anti-slip teeth, 14-second anti-slip surface, 140-second anti-slip teeth, 15-connecting rod, 16-positioning portion, 17-housing, 170-first connecting plate, 171-second connecting plate, 172-third connecting plate;

[0028] 2-Connecting rope;

[0029] 3-turning rod, 30-hook part, 31-lever part, 32-handle part;

[0030] 4- transmission part, 40- transmission surface. DETAILED DESCRIPTION

[0031] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0032] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a variety of structural modes and implementation modes can be replaced by those skilled in the art. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction on the technical solution of the utility model.

[0033] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0034] The present application provides a chain-type turning device, such as Figure 1 , Figures 8 to 9 As shown, it includes at least two connecting blocks 1, at least two connecting ropes 2 and at least two turning rods 3.

[0035] A section of the connecting rope 2 is connected between any two adjacent connecting blocks 1 to lock the transmission member 4 in a closed loop during the cranking. During the cranking, the connecting rope 2 and the connecting blocks 1 are sequentially connected to form a closed loop structure, which plays a role in locking the transmission member 4 and transmitting torque.

[0036] like Figures 2 to 4 As shown, the connecting block 1 is provided with a first lever 10, a second lever 11 and a positioning rod 12. The first lever 10 and the second lever 11 are arranged along the extension direction of the connecting rope 2 during the turning, and the positioning rod 12 is located between the first lever 10 and the second lever 11.

[0037] like Figure 5 As shown, the turning lever 3 includes a lever portion 31 and a hook portion 30 connected to each other, and the hook portion 30 is used to be detachably hooked on the Figure 2 On the positioning rod 12 shown in FIG. 1 , the lever portion 31 is used to abut against the first lever 10 to apply positive force to drive the transmission member 4 to rotate clockwise, as shown in FIG. Figure 6 and Figure 8 As shown, or it abuts against the second lever 11 to apply reverse force to rotate the transmission member 4 counterclockwise, as shown in FIG. Figure 7 and Fig. 9 At least two of the turning rods 3 are correspondingly arranged on at least two of the connecting blocks 1 to alternately turn the transmission member 4. The turning rods 3 act on the connecting block 1 to generate a transmission torque, which acts on the transmission member 4 through the connecting block 1 and the connecting rope 2 to drive the transmission member 4 to rotate.

[0038] The following is an optional turning process: Figures 6 to 9As shown, at least two connecting blocks 1 and at least two connecting cables 2 are connected alternately and sequentially to form a closed loop and are wound around the transmission member 4. The hooking portion 30 of at least one turning rod 3 is correspondingly hooked on the positioning rod 12 of at least one connecting block 1, and the lever portion 31 is abutted on the first lever 10, and the turning rod 3 is pulled. After the connecting block 1 is subjected to force, the connecting cable 2 and the transmission member 4 are locked, and the transmission member 4 is driven to rotate clockwise to achieve turning. When the above-mentioned at least one turning rod 3 reaches the limit position, at least one other turning rod 3 is hooked on at least one other connecting block 1 in the same way and pulled to achieve continuous turning. The hooking portion 30 of the turning rod 3 is hooked on the positioning rod 12 in the opposite direction, and the lever portion 31 of the turning rod 3 is abutted on the second lever 11, and then force is applied to drive the transmission member 4 to rotate counterclockwise, which can directly achieve reverse turning without disassembling the connecting block 1 and the connecting cable 2, which is stable and reliable. When at least one turning rod 3 is used for turning, it is beneficial to increase the force uniformity of the connecting block 1, reduce the probability of damage to the connecting block 1, and save time and effort.

[0039] The number of connecting blocks 1 and the length of connecting rope 2 in the embodiment of the present application can be changed according to the diameter of transmission member 4 to achieve a better turning effect on transmission member 4. Transmission member 4 can be a transmission shaft, coupling, hydraulic coupling and other transmission parts.

[0040] The chain winch provided in the embodiment of the present application has a lever portion 31 of the winch rod 3 abutting against the first lever 10 to apply a positive force to winch, or abutting against the second lever 11 to apply a reverse force to winch, which is quick and convenient, and increases the application occasions of the chain winch through two-way winching. At least two winch rods 3 alternately apply force to the connecting block 1 to drive the transmission member 4 to rotate continuously, so as to achieve continuous winching, avoid winch failure caused by the reverse rebound of the transmission member 4, and at the same time avoid mechanical injury safety accidents caused by the rebound of the transmission member 4, thereby protecting personal safety.

[0041] As an optional embodiment, the side of the connecting block 1 facing the transmission member 4 includes a first anti-slip surface 13 and a second anti-slip surface 14 connected to each other, and the angle between the first anti-slip surface 13 and the second anti-slip surface 14 is greater than a straight angle. Figure 2 As shown, the first anti-slip surface 13 and the second anti-slip surface 14 connected in the embodiment of the present application are in a "V" shape with an opening greater than 180°, so that the junction of the first anti-slip surface 13 and the second anti-slip surface 14 in the connecting block 1 abuts against the transmission member 4 to limit the transmission member 4.

[0042] As an optional embodiment, the first anti-skid surface 13 is provided with a first anti-skid tooth 130, and the second anti-skid surface 14 is provided with a second anti-skid tooth 140. The first anti-skid tooth 130 and the second anti-skid tooth 140 in the embodiment of the present application reduce the sliding between the connecting block 1 and the transmission member 4 by increasing the pressure between the contact surface with the transmission member 4, and at the same time, the transmission member 4 is limited at the intersection of the first anti-skid surface 13 and the second anti-skid surface 14, thereby increasing the stability of the connecting block 1 abutting against the transmission member 4. The number of the first anti-skid tooth 130 and the second anti-skid tooth 140 in the embodiment of the present application can be multiple to increase the anti-skid effect.

[0043] As an optional embodiment, a connecting rod 15 is installed on the connecting block 1, and a positioning portion 16 for installing the connecting cable 2 is provided on the connecting rod 15. Figures 2 to 4 As shown, the connection cable 2 is limited on the connection block 1 by the positioning portion 16 .

[0044] As an optional embodiment, the positioning portion 16 includes a positioning ring or a positioning hook. The positioning portion 16 in the embodiment of the present application can be one of a positioning ring and a positioning hook, and the connecting rope 2 is hooked on the positioning ring or the positioning hook, and the length of the connecting rope 2 between two adjacent connecting blocks 1 can be adjusted by hooking the connecting rope 2 at different positions on the positioning ring or the positioning hook.

[0045] As an optional embodiment, the connection block 1 includes a shell 17, and the shell 17 includes a first connecting plate 170 and a second connecting plate 171 that are arranged opposite to each other, and a third connecting plate 172 is connected between the first connecting plate 170 and the second connecting plate 171 to increase the stability of the connection between the first connecting plate 170 and the second connecting plate 171. The first lever 10, the second lever 11 and the positioning rod 12 are all passed through the first connecting plate 170 and the second connecting plate 171 to distribute the force of the first lever 10, the second lever 11 and the positioning rod 12 to the first connecting plate 170 and the second connecting plate 171, which is conducive to making the first connecting plate 170 and the second connecting plate 171 bear force uniformly. The shell 17 in the embodiment of the present application is a load-bearing and force-bearing structural component, and the shell 17 can be processed and manufactured by casting, welding, milling, etc.

[0046] As an optional embodiment, the connecting rope 2 is one of a chain, a rope, and a cloth belt. The chain, rope, or cloth belt are all flexible parts that can be wound around the transmission member 4, connected between the connecting blocks 1, and together with the connecting blocks 1, lock the transmission member 4 and transmit torque.

[0047] As an optional embodiment, the inner surface of the hook portion 30 is an arc surface, and the outer peripheral surface of the positioning rod 12 is an annular surface, and the annular surface is arranged in affixed relation with the arc surface. The annular surface is arranged in affixed relation with the arc surface, which is conducive to increasing the stability of force transmission between the hook portion 30 and the positioning rod 12.

[0048] As an optional embodiment, the transmission member 4 includes a transmission surface 40, the number of the connection blocks 1 is four, the four connection blocks 1 are evenly distributed around the transmission surface 40, and the connection rope 2 is connected between any two adjacent connection blocks 1. Figure 1 , Figures 8 to 9 As shown, in the embodiment of the present application, the transmission surface 40 is the outer side surface of the transmission member 4. When the transmission surface 40 is the outer axial surface, the central angle between any two adjacent connecting blocks 1 is a right angle. When turning the wheel, the hooking parts 30 of at least two turning rods 3 can be hooked on the two connecting blocks 1 to turn the wheel, saving time and effort.

[0049] As an optional embodiment, the turning lever 3 further includes a handle portion 32 for applying force, and the operator applies force to the handle portion 32 and applies force to the connecting block 1 through the hook portion 30 and the lever portion 31. A rubber sleeve may be provided on the handle portion 32 to increase the comfort of the operation.

[0050] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0051] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A chain turning device, characterized in that: It comprises at least two connecting blocks, at least two connecting ropes and at least two turning rods; A section of the connecting rope is connected between any two adjacent connecting blocks so as to be locked in a closed loop on the transmission member during turning; The connecting block is provided with a first lever, a second lever and a positioning rod, the first lever and the second lever are arranged in an extended direction of the connecting cable when the gear is turned, and the positioning rod is located between the first lever and the second lever; The turning rod includes a lever portion and a hook portion connected to each other, the hook portion is used to detachably hook on the positioning rod, and the lever portion is used to abut against the first lever to apply a positive force to turn the transmission member or abut against the second lever to apply a reverse force to turn the transmission member. At least two of the turning rods are correspondingly arranged on at least two of the connecting blocks to alternately turn the transmission member.

2. The chain turner according to claim 1, characterized in that: The side of the connecting block facing the transmission member comprises a first anti-slip surface and a second anti-slip surface that are connected to each other, and the angle between the first anti-slip surface and the second anti-slip surface is greater than a straight angle.

3. The chain turner according to claim 2, characterized in that: The first anti-skid surface is provided with first anti-skid teeth, and the second anti-skid surface is provided with second anti-skid teeth.

4. The chain turner according to any one of claims 1 to 3, characterized in that: A connecting rod is installed on the connecting block, and a positioning portion for installing a connecting rope is provided on the connecting rod.

5. The chain turner according to claim 4, characterized in that: The positioning portion includes a positioning ring or a positioning hook.

6. The chain turner according to claim 1, characterized in that: The connecting block includes a shell, which includes a first connecting plate and a second connecting plate arranged opposite to each other, and a third connecting plate connected between the first connecting plate and the second connecting plate, and the first lever, the second lever and the positioning rod are all passed through the first connecting plate and the second connecting plate.

7. The chain turner according to claim 1, characterized in that: The connecting rope is one of a chain, a rope and a cloth belt.

8. The chain turner according to claim 1, characterized in that: The inner surface of the hooking portion is an arc surface, the outer peripheral surface of the positioning rod is an annular surface, and the annular surface is arranged in close contact with the arc surface.

9. The chain turner according to claim 1, characterized in that: The transmission member comprises a transmission surface. The number of the connection blocks is four. The four connection blocks are evenly distributed in the circumference of the transmission surface. The connection rope is connected between any two adjacent connection blocks.

10. The chain turner according to claim 1, characterized in that: The barring rod also includes a handle portion for applying force.

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