Wrench tool for locking winch shaft through friction force

Abstract

The utility model relates to the technical field of wrench tools, and provides a wrench tool for locking a winch shaft through friction force, which is applied to a winding and pulling device for winding and unwinding a steel wire rope through rotation of the winch shaft, a connecting part is arranged at the end part of the winch shaft, the wrench tool comprises a wrench rod, and a driving head for connecting the connecting part and transmitting torque is arranged at one end of the wrench rod. A frustum is arranged in the middle of the wrench rod; at least two fixing screws are arranged at one end of the fixing sleeve, the fixing screws are connected with the rolling and pulling device during use, and a threaded connector is arranged at the other end of the fixing sleeve; an inner hole of the taper sleeve comprises a taper section and a threaded section, the wrench rod is sleeved with the fixing sleeve and the taper sleeve, the threaded section is connected with the threaded connector, and the taper section is matched with the frustum. After the threaded section is connected with the threaded connector, the conical section on the conical sleeve is matched with the frustum on the wrench rod and abuts against the frustum to generate friction force, and the winch shaft is locked.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wrench tool technical field, specifically, a wrench tool is provided by friction force locking capstan shaft. BACKGROUND

[0002] The winding and pulling device usually drives the steel wire rope to be wound and unwound by the rotation of the capstan shaft to realize the actions such as object lifting and traction, for example, the winding machine and the capstan belong to the winding and pulling device.

[0003] However, under some working conditions, the steel wire rope always has a load, when the wrench is loosened, the capstan shaft will immediately reverse, and the steel wire rope will immediately be pulled back under the action of the load, so that the capstan shaft cannot be stopped at any angle (that is, the steel wire rope cannot be stopped at any position). Therefore, how to provide a wrench tool capable of locking the capstan shaft is a technical problem to be solved in the field. SUMMARY

[0004] The utility model aims at providing a wrench tool capable of locking the capstan shaft by friction force to solve the above-mentioned defects of the prior art.

[0005] The utility model realizes the following technical scheme:

[0006] A wrench tool capable of locking the capstan shaft by friction force is applied to a winding and pulling device capable of winding and unwinding the steel wire rope by the rotation of the capstan shaft, the end of the capstan shaft is provided with a connecting part, and the wrench tool comprises:

[0007] A wrench rod, one end of the wrench rod is provided with a driving head used for connecting the connecting part and transmitting torque, and the middle part of the wrench rod is provided with a conical frustum;

[0008] A fixing sleeve, one end of the fixing sleeve is provided with at least two fixing screws, the fixing screws are connected with the winding and pulling device during use, and the other end of the fixing sleeve is provided with a threaded connector; and

[0009] A conical sleeve, the inner hole of the conical sleeve comprises a conical section and a threaded section, the fixing sleeve and the conical sleeve are both sleeved on the wrench rod, the threaded section is connected with the threaded connector, and the conical section is matched with the conical frustum to lock the wrench rod by the friction force between the conical section and the conical frustum.

[0010] Optionally, one end of the wrench rod away from the driving head is provided with a handle sleeve.

[0011] Optionally, the handle sleeve is sleeved on the wrench rod, and the two are connected in the radial direction through a fastener.

[0012] Optionally, the surfaces of the handle sleeve and the conical sleeve are both provided with anti-skid structures.

[0013] Optionally, the large-diameter end of the conical segment is provided with a large groove, and the small-diameter end of the conical segment is provided with a small groove. The diameter of the large groove is larger than the diameter of the large-diameter end of the conical segment, and the diameter of the small groove is larger than the diameter of the small-diameter end of the conical segment.

[0014] Optionally, the fixing sleeve is provided with a stepped hole for passing through the fixing screw. The small diameter section of the stepped hole is provided with an internal thread that can be connected to the fixing screw. In use, the fixing screw passes through the small diameter section and the large diameter section of the stepped hole in sequence and then connects to the coiling device.

[0015] The technical solution of this utility model has at least the following advantages and beneficial effects: In this utility model, the fixing sleeve is provided with at least two fixing screws. When in use, the fixing screws are connected and fixed to the winding device to achieve relative fixation between the fixing sleeve and the winding device; after operation, the wrench lever is connected to the threaded connector on the fixing sleeve through the threaded section on the tapered sleeve. After connection, the tapered section on the tapered sleeve cooperates with the cone on the wrench lever and abuts against it to generate friction, thereby locking the wrench lever and thus achieving the purpose of locking the winch shaft; by turning the tapered sleeve to separate the tapered section from the cone, the wrench lever can be rotated, thereby unlocking the winch shaft. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a wrench tool that locks a winch shaft by friction, provided by this utility model;

[0018] Figure 2 A top view of a wrench tool that uses friction to lock a winch shaft, as provided by this utility model;

[0019] Figure 3 for Figure 2 AA section rotation view;

[0020] Figure 4 for Figure 3 Enlarged view of point C;

[0021] Figure 5 for Figure 2 BB section view;

[0022] Figure 6 This is a schematic diagram of the wrench lever.

[0023] Figure 7 is a sectional view of the taper sleeve;

[0024] Figure 8 is a structural schematic view of a winding and pulling device in the prior art;

[0025] Figure: 1 - wrench rod, 101 - driving head, 102 - taper, 2 - fixed sleeve, 201 - fixed screw, 202 - threaded connector, 203 - stepped hole, 3 - taper sleeve, 301 - threaded section, 302 - tapered section, 304 - small sink, 305 - large sink, 4 - handle sleeve, 5 - fastener, 6 - winding and pulling device, 601 - steel wire rope, 602 - capstan shaft, 603 - connecting part. DETAILED DESCRIPTION

[0026] A wrench tool for locking the capstan shaft by friction force, applied to the winding and pulling device 6 for winding and unwinding the steel wire rope 601 by rotating the capstan shaft 602, the end of the capstan shaft 602 is provided with a connecting part 603 (see Figure 8 ). Referring to Figure 1 , the wrench tool comprises a wrench rod 1, a fixed sleeve 2 and a taper sleeve 3.

[0027] One end of the fixed sleeve 2 is provided with two fixed screws 201, which are connected with the winding and pulling device 6 during use to realize the relative fixation of the fixed sleeve 2 and the winding and pulling device 6. It is easy to understand that at least two screws can define the relative position of the fixed sleeve 2 and the winding and pulling device 6, so the number of fixed screws 201 can of course be greater than two in other embodiments.

[0028] Referring to Figure 4 , further, the fixed sleeve 2 of the embodiment is provided with a stepped hole 203 for passing the fixed screw 201, the small diameter section of the stepped hole 203 is provided with an internal thread connectable with the fixed screw 201, and the fixed screw 201 is connected with the winding and pulling device 6 after passing through the small diameter section and the large diameter section of the stepped hole 203 during use. It is worth mentioning that such arrangement makes the fixed screw 201 not fall off from the fixed sleeve 2 even after being separated from the winding and pulling device 6, that is, the fixed screw 201 always remains hanging on the fixed sleeve 2, which is more convenient to use.

[0029] Referring to Figure 6 , one end of the wrench rod 1 is provided with a driving head 101 for connecting with the connecting part 603 at the end of the capstan shaft 602 and transmitting torque, for example, the connecting part 603 at the end of the capstan shaft 602 of the embodiment is a hexagonal hole, and the driving head 101 is a hexagonal head matched with the hexagonal hole. Similarly, in other embodiments, the driving head 101 can be adapted according to the shape of the connecting part 603.

[0030] Referring to Figure 2 , Figure 3 ,Figure 5 and Figure 7 The end of the fixed sleeve 2 away from the driving head 101 is provided with a threaded connector 202, the middle part of the wrench rod 1 (it should be understood that the middle part here should be understood as any part between the two ends of the wrench, and should not be understood as only the central position of the line connecting the two ends of the wrench rod 1) is provided with a conical sleeve 3, and the inner hole of the conical sleeve 3 includes a threaded section 301 and a conical section 302. In actual application, after the wrench rod 1 is operated, the threaded section 301 on the conical sleeve 3 is connected with the threaded connector 202 on the fixed sleeve 2, after connection, the conical section 302 on the conical sleeve 3 cooperates with the conical sleeve 102 on the wrench rod 1 and abuts tightly to generate a friction force (it should be understood that the size of the friction force is controlled by the connection depth of the threaded section 301 and the threaded connector 202), thereby locking the wrench rod 1, and further achieving the purpose of locking the capstan shaft 602. By twisting the conical sleeve 3 to separate the conical section 302 from the conical sleeve 102, the wrench rod 1 can be rotated, thereby achieving the unlocking of the capstan shaft 602.

[0031] The large-diameter end of the conical section 302 of the embodiment is provided with a large sink groove 305, and the small-diameter end of the conical section 302 is provided with a small sink groove 304. The diameter of the large sink groove 305 is greater than the diameter of the large-diameter end of the conical section 302, and the diameter of the small sink groove 304 is greater than the diameter of the small-diameter end of the conical section 302. In this way, the conical section 302 is more easily attached to the conical sleeve 102.

[0032] On the basis of the above, the end of the wrench rod 1 away from the driving head 101 is provided with a handle sleeve 4, which is convenient for holding and rotating the wrench rod 1. As an option, the handle sleeve 4 of the embodiment is sleeved on the wrench rod 1, and the two are connected in the radial direction by a fastener 5 (the fastener 5 can be a screw, a rivet, etc.). That is, the handle sleeve 4 and the wrench rod 1 are connected and fixed by the fastener 5. It should be understood that, in order to avoid the influence of the fastener 5 on holding, the fastener 5 should be sunk into the inside of the handle sleeve 4. Further, the surfaces of the conical sleeve 3 and the handle sleeve 4 are provided with anti-slip structures (not shown in the figure), which can prevent slipping when holding. The specific form of the anti-slip structure is not limited, for example, it can be anti-slip lines arranged on the surface, the surface can be provided with a special shape, or an anti-slip sleeve can be arranged on the surface.

[0033] In other embodiments, the handle sleeve 4 can be a structure integrated with the wrench rod 1. In addition, the handle sleeve 4 should not be understood as only a cylindrical structure. In other embodiments, the handle sleeve 4 can also be provided as other structures that are convenient for holding.

[0034] The above merely is preferred embodiment of the present utility model, and is not for limiting the present utility model, for the person skilled in the art, the present utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A wrench tool for locking a winch shaft by friction, applied to a winding device that winds and unwinds wire rope by rotating the winch shaft, wherein the end of the winch shaft is provided with a connecting part, characterized in that, include: A wrench handle, one end of which is provided with a drive head for connecting to the connecting part and transmitting torque, and a cone-shaped part in the middle of the wrench handle; The fixing sleeve has at least two fixing screws at one end, which are connected to the coiling device during use. The other end of the fixing sleeve has a threaded connector. The tapered sleeve has an inner hole comprising a tapered section and a threaded section. Both the fixed sleeve and the tapered sleeve are fitted onto the wrench handle. The threaded section is connected to the threaded connector, and the tapered section mates with the cone, thereby locking the wrench handle through the friction between the tapered section and the cone.

2. The wrench tool for locking a winch shaft by friction according to claim 1, characterized in that, The end of the wrench lever away from the drive head is provided with a sleeve.

3. The wrench tool for locking a winch shaft by friction according to claim 2, characterized in that, The sleeve is fitted onto the wrench handle, and the two are radially connected by fasteners.

4. The wrench tool for locking a winch shaft by friction according to claim 2, characterized in that, Both the handle sleeve and the conical sleeve have anti-slip structures on their surfaces.

5. The wrench tool for locking a winch shaft by friction according to any one of claims 1-4, characterized in that, The tapered section has a large groove at its large diameter end and a small groove at its small diameter end. The diameter of the large groove is larger than the diameter of the large diameter end of the tapered section, and the diameter of the small groove is larger than the diameter of the small diameter end of the tapered section.

6. The wrench tool for locking a winch shaft by friction according to any one of claims 1-4, characterized in that, The fixing sleeve is provided with a stepped hole for the fixing screw to pass through. The small diameter section of the stepped hole is provided with an internal thread that can be connected to the fixing screw. In use, the fixing screw passes through the small diameter section and the large diameter section of the stepped hole in sequence and then connects to the coiling device.

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