Chain tensioning tool

Abstract

The utility model relates to the technical field of chain tensioning tools, in particular to a chain tensioning tool which comprises two clamping jaws symmetrically connected to a supporting base in a sliding mode, a driving mechanism enabling the two clamping jaws to move relatively is arranged in an inner cavity of the supporting base, and the driving mechanism comprises a rotating rod rotationally connected to the inner cavity of the supporting base. Nuts fixedly connected with the clamping jaws are arranged on two sections of external threads, opposite in thread screwing direction, of the rotating rod in a threaded and sleeving manner; a limiting mechanism for limiting the rotating rod is arranged on the peripheral wall of the rotating rod, the limiting mechanism comprises a rotating handle which is installed on the peripheral wall of the rotating rod in a sliding mode and located outside the supporting base, and the rotating handle is clamped with the outer wall of the supporting base; when the chain breaking device is used, manual supporting is not needed, after a broken chain is tensioned, the L-shaped inserting block on one side of the rotating handle is clamped with the L-shaped inserting groove in the supporting base by sliding the rotating handle, rotation of the rotating handle can be conveniently limited through clamping of the L-shaped inserting block and the L-shaped inserting groove, and therefore the rotating rod is prevented from rotating reversely, and the chain breaking device can be conveniently used in a factory with vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of chain tensioning tools, in particular to a chain tensioning tool. Background Art

[0002] Chains are commonly used transmission components in steel rolling equipment. When a chain breaks due to tripping or other reasons during operation, maintenance personnel need to use a chain tensioning tool to pull the two broken ends of the chain together.

[0003] In the prior art, there is a utility model patent with a publication (announcement) number of CN218863195U and a name of a large chain tensioning tool, which includes a first connecting tube and a second connecting tube, the second connecting tube is movably sleeved inside the first connecting tube and extends out of the first connecting tube, one end of the first connecting tube is fixedly connected to a first claw, one end of the second connecting tube is fixedly connected to a second claw that cooperates with the first claw, the top of the second connecting tube extending out of the first connecting tube is fixedly connected to a fixed block, the fixed block is connected to a screw, and the top of the first connecting tube is fixedly connected to a nut seat. The large chain tensioning tool can make the second connecting tube move relative to the first connecting tube by driving the screw to rotate, so that the broken chain fixed by the first claw and the second claw respectively can be tensioned, and then a new chain and a chain pin are used to connect the broken chain. One person can complete the tensioning operation of the broken chain, and the operation is simple.

[0004] The device of the patent can complete the tensioning operation of the broken chain by one person, and the operation is simple and convenient for the staff to use; however, the device of the patent still has the following technical defects during use: (1) Since the device of the patent does not have a separate supporting mechanism, the device as a whole is supported by the first clamping claw and the fixed block fixedly installed on the second connecting pipe during use. Since the first clamping claw and the fixed block themselves have different shapes and a screw, a nut seat, etc. are also provided on one side of the fixed block, in order to facilitate the user to subsequently rotate the crank stably, the staff needs to use one hand to assist in supporting the device during the use of the device until the rotation of the crank is completed, which brings certain inconvenience to the user; (2) Since the tensioning work of the broken chain is generally carried out in the factory, and many machines in the factory will generate certain vibrations, and the device of the patent does not limit the crank, the crank will reverse due to external vibrations after the staff tensions the broken chain, which requires the staff to rework and is inconvenient to use. Utility Model Content

[0005] The utility model aims to provide a chain tensioning tool.

[0006] The technical problems solved by the utility model are:

[0007] (1) In order to ensure the stability of the equipment during use, the existing equipment requires the staff to use one hand to assist in supporting the equipment;

[0008] (2) The existing equipment does not limit the crank position, which makes the equipment inconvenient to use in factories with vibrations.

[0009] The utility model can be implemented through the following technical scheme: a chain tensioning tool, comprising two clamping jaws symmetrically slidably connected to a support base, the support base is convenient for supporting the two clamping jaws, and because the support base is a rectangular parallelepiped, its supporting effect is good, and it is convenient for the staff to use it later; the inner cavity of the support base is provided with a driving mechanism that enables the two clamping jaws to move relative to each other, and the driving mechanism includes a rotating rod rotatably connected to the inner cavity of the support base, and nuts fixedly connected to the clamping jaws are threadedly sleeved on two sections of external threads of the rotating rod with opposite threads, and the nuts are slidably connected to the inner cavity of the support base, and the two nuts are relatively moved by rotating the rotating rod;

[0010] The outer wall of the rotating rod is provided with a limiting mechanism for limiting the rotating rod. The limiting mechanism includes a rotating handle which is slidably installed on the outer wall of the rotating rod and is located outside the supporting base. The outer wall of the rotating handle is engraved with anti-slip grooves. The setting of the anti-slip grooves makes it convenient for the user to rotate the rotating handle; the rotating handle is engaged with the outer wall of the supporting base.

[0011] A further technical improvement of the utility model is that: U-shaped grooves are provided on both sides of the outer peripheral wall of the rotating rod, and a cylinder fixedly connected to the rotating handle is slidably connected to the inner wall of the U-shaped groove, and the cylinder cooperates with the U-shaped groove.

[0012] A further technical improvement of the utility model is that at least two L-shaped plugs are symmetrically fixedly installed on one side of the rotary handle close to the support base, and an L-shaped slot matching with the L-shaped plug is opened on the outer wall of the support base.

[0013] A further technical improvement of the utility model is that at least one lifting mechanism is arranged on the side wall of the support base, the lifting mechanism comprises an inner sleeve fixedly connected to the side wall of the support base, an outer sleeve is slidably sleeved on the outer peripheral wall of the inner sleeve, and the setting of the lifting mechanism facilitates the adaptive adjustment of the height of the two clamping jaws according to the actual thickness or installation height of the broken chain, and the height adjustment facilitates the two clamping jaws to smoothly enter the chain hole of the broken chain, which is convenient for use.

[0014] A further technical improvement of the utility model is that the outer sleeve and the inner sleeve are fixed by a positioning rod.

[0015] A further technical improvement of the utility model is that a T-shaped adhesive plate is fixedly installed on the side of the outer sleeve away from the inner sleeve. The T-shaped adhesive plate is preferably a recyclable nano double-sided adhesive plate. By using the T-shaped adhesive plate, the device can be further fixed, thereby facilitating stable support of the device.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model facilitates supporting the whole device through the support base, and facilitates fixing the device at the designated work location through the T-shaped adhesive plate, thereby facilitating further supporting the device. Through the coordinated arrangement of the two, it is convenient to stably support the device, so that the device does not need manual support when in use, thereby simplifying the operating steps of the device and facilitating use by the staff.

[0018] 2. After the broken chain is tensioned, the utility model slides the handle on the outer peripheral wall of the rotating rod to make the L-shaped plug on one side of the handle engage with the L-shaped slot in the supporting base. The engagement of the two can limit the rotation of the handle, thereby preventing the rotating rod from reversing, making it convenient to use the equipment in a factory with vibration, thereby improving the overall flexibility of the equipment and facilitating subsequent operations by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 A partial enlarged view of the middle A;

[0022] Figure 3 This is a schematic diagram of the internal structure of the support base of the utility model;

[0023] Figure 4 For this utility model Figure 3 A partial enlarged view of point B in the middle;

[0024] Figure 5 It is a structural schematic diagram of the lifting mechanism of the utility model.

[0025] In the figure:

[0026] 1. Support base;

[0027] 2. Gripper;

[0028] 3. Rotating rod; 31. Nut; 32. Mounting seat; 33. Rotating handle; 331. U-shaped groove; 332. Cylinder; 333. L-shaped plug; 334. L-shaped slot;

[0029] 4. Lifting mechanism; 41. Base; 42. Inner sleeve; 43. Outer sleeve; 44. Positioning rod; 45. T-shaped adhesive plate. DETAILED DESCRIPTION

[0030] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0031] See also Figure 1-5 As shown, this embodiment provides a technical solution, a chain tensioning tool, including a support base 1, and two clamping jaws 2 are symmetrically and slidably connected to the support base 1.

[0032] The support base 1 is used for preliminary support of the equipment.

[0033] A rotating rod 3 is rotatably connected between the two inner side walls of the support base 1 through bearings. The setting of the bearings facilitates improving the rotation stability of the rotating rod 3. Two sections of external threads with opposite rotation directions are provided on one side of the rotating rod 3 near the end. A nut 31 is threadedly sleeved on the external thread of the rotating rod 3 and is slidably connected to the inner wall of the support base 1. A mounting seat 32 is fixedly installed on the nut 31, and the mounting seat 32 is fixedly connected to the clamping jaw 2 through bolts.

[0034] One end of the rotating rod 3 passes through the supporting base 1 and extends to the outside of the supporting base 1 , and a rotating handle 33 is slidably mounted on the end of the rotating rod 3 extending to the outside of the supporting base 1 .

[0035] The rotating rod 3 is rotatably connected to the inner cavity of the supporting base 1 .

[0036] U-shaped grooves 331 are provided on both sides of the outer wall of the rotating rod 3, and the inner wall of the U-shaped groove 331 is slidably connected to a cylinder 332 fixedly connected to the rotating handle 33. At least two L-shaped plug blocks 333 are symmetrically fixedly installed on one side of the rotating handle 33 close to the supporting base 1. The outer wall of the rotating handle 33 is provided with an L-shaped slot 334 matching the L-shaped plug block 333. Sliding the rotating handle 33 allows the L-shaped plug block 333 to enter the inner cavity of the corresponding L-shaped slot 334.

[0037] At least one lifting mechanism 4 is provided on the side wall of the support base 1, and the lifting mechanism 4 includes a base 41, an outer sleeve 43 is fixedly installed on one side of the base 41, and the inner cavity of the outer sleeve 43 is slidably connected to the inner sleeve 42 fixedly connected to the side wall of the support base 1, and the outer sleeve 43 and the inner sleeve 42 are fixed by a positioning rod 44.

[0038] A T-shaped adhesive board 45 is fixedly mounted on the other side of the base 41 , and the T-shaped adhesive board 45 is preferably a recyclable nano double-sided adhesive board.

[0039] The T-shaped adhesive plate 45 is used to further support the device.

[0040] When the utility model is used, the height of the two clamping jaws 2 is first adaptively adjusted according to the actual thickness or installation height of the broken chain. During the adjustment, the positioning rod 44 used to fix the outer sleeve 43 and the inner sleeve 42 is taken out at the same time. After being taken out, the elongated height of the inner sleeve 42 is determined according to the actual thickness or installation height of the broken chain and fixed again by the positioning rod 44. By adjusting it, the two clamping jaws 2 can smoothly enter the chain hole of the broken chain.

[0041] After adjustment, the support base 1 is used to support the entire device, and the T-shaped adhesive plate 45 is used to fix the device at a designated work location, thereby facilitating further support of the device. The coordinated arrangement of the two facilitates stable support of the device, so that the device does not require manual support when in use.

[0042] When the device is fixed, the limit of the rotary handle 33 is first released. When the limit is released, the rotary handle 33 is slid along the U-shaped groove 331, and the rotary handle 33 drives the cylinder 332 fixedly connected to it to slide on the inner wall of the U-shaped groove 331. When the L-shaped plug block 333 fixedly connected to the rotary handle 33 is completely separated from the corresponding L-shaped slot 334 in the support base 1, the rotary handle 33 is rotated to rotate the rotating rod 3. Since the threads on the outer peripheral wall of the rotating rod 3 are two sections with opposite rotation directions, the two nuts 31 are driven to move relative to each other through the thread transmission action. The relative movement of the two nuts 31 facilitates the tensioning of the broken chain. After the broken chain is tensioned, the rotary handle 33 is reset, and the L-shaped plug block 333 on one side of the rotary handle 33 is engaged with the L-shaped slot 334 in the support base 1. The engagement of the two can facilitate the rotation of the rotary handle 33, thereby preventing the rotating rod 3 from reversing, and thus facilitating the use of the device in a factory with vibration.

[0043] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A chain tensioning tool, comprising two clamping jaws (2) symmetrically slidably connected to a supporting base (1), characterized in that: The inner cavity of the support base (1) is provided with a driving mechanism for causing the two clamping jaws (2) to move relative to each other, the driving mechanism comprising a rotating rod (3) rotatably connected to the inner cavity of the support base (1), and nuts (31) fixedly connected to the clamping jaws (2) are threadedly sleeved on two sections of external threads with opposite thread rotation directions of the rotating rod (3); The outer peripheral wall of the rotating rod (3) is provided with a limiting mechanism for limiting the position of the rotating rod (3), and the limiting mechanism comprises a rotating handle (33) slidably mounted on the outer peripheral wall of the rotating rod (3) and located outside the supporting base (1), and the rotating handle (33) is engaged with the outer wall of the supporting base (1).

2. A chain tensioning tool according to claim 1, characterized in that: U-shaped grooves (331) are provided on both sides of the outer peripheral wall of the rotating rod (3), and a cylinder (332) fixedly connected to the rotating handle (33) is slidably connected to the inner wall of the U-shaped groove (331), and the cylinder (332) is matched with the U-shaped groove (331).

3. A chain tensioning tool according to claim 1, characterized in that: At least two L-shaped plug blocks (333) are symmetrically fixedly mounted on one side of the rotary handle (33) close to the support base (1), and an outer wall of the support base (1) is provided with an L-shaped slot (334) matching with the L-shaped plug blocks (333).

4. A chain tensioning tool according to claim 1, characterized in that: The side wall of the support base (1) is provided with at least one lifting mechanism (4), the lifting mechanism (4) comprising an inner sleeve (42) fixedly connected to the side wall of the support base (1), and an outer sleeve (43) is slidably sleeved on the outer peripheral wall of the inner sleeve (42).

5. A chain tensioning tool according to claim 4, characterized in that: The outer sleeve (43) and the inner sleeve (42) are fixed via a positioning rod (44).

6. A chain tensioning tool according to claim 4, characterized in that: A T-shaped adhesive plate (45) is fixedly mounted on one side of the outer sleeve (43) away from the inner sleeve (42).

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