Chain wrench

Abstract

The utility model provides a chain wrench, belongs to the technical field of dismounting tools, and aims to solve the problems that the existing chain wrench is difficult to position the length of a chain, and the adjustment efficiency of the length of the chain is influenced. Comprising a positioning wrench head, an adjustable screwing handle, a positioning mounting shaft, a fixed adapter frame, a positioning chain, a length adjusting screw rod and a chain adjusting chain wheel, the length adjusting screw rod is rotationally connected to the left side of the positioning wrench head; the adjustable screwing handle is in threaded connection with the outer side of the length adjusting screw rod; the positioning mounting shaft is rotationally connected to the upper part of the positioning wrench head; the fixed adapter frame is fixedly connected to the right side of the positioning wrench head; the positioning chain is fixedly connected to the right side of the fixed transfer frame; the chain adjusting chain wheel is fixedly connected to the lower side of the positioning mounting shaft; according to the utility model, the inconvenience of finding chain holes by adjusting the position of the positioning chain for many times is avoided, the positioning difficulty of the positioning chain is reduced, and the adjusting efficiency of the length of the positioning chain is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of disassembly and assembly tools, and more specifically, particularly relates to a chain spanner. Background Art

[0002] When installing and disassembling electromechanical equipment, a wrench needs to be used to tighten and remove the bolts. Among the existing wrenches, chain wrenches are widely used because they can adapt to bolts of different sizes. When in use, the length of the chain is adjusted according to the use requirements. At this time, the size of the ring formed by the chain and the handle changes, thereby facilitating the disassembly and assembly of bolts of different sizes.

[0003] For example, CN217434187U discloses a chain wrench, comprising: a handle; a chain portion, a first end of the chain portion is hingedly connected to the handle, and a second end or a middle portion of the chain portion is detachably connected to the handle; a plurality of clamping members are arranged at intervals on the chain portion, and a plurality of clamping members are located on the inner side of the chain portion; wherein, when the second end of the chain portion is connected to the handle, the chain portion and the handle can form an annular structure; the technical solution of the present application effectively solves the problem in the related art that fasteners on pipelines are easily damaged when tightened.

[0004] Based on the above, when adjusting the chain length, the existing chain wrench needs to first insert one end of the chain into the sleeve, and then insert the locking pin into the chain hole and the sleeve positioning hole to position the chain. However, after the chain is inserted into the sleeve, it is difficult to align the locking pin with the chain hole, and positioning is relatively difficult, which affects the efficiency of adjusting the chain length. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a chain wrench to solve the problem that when adjusting the chain length, the existing chain wrench needs to first insert one end of the chain into the sleeve, and then insert the locking pin into the chain hole and the sleeve positioning hole to position the chain, but after the chain is inserted into the sleeve, it is difficult to align the locking pin with the chain hole, and positioning is relatively difficult, which affects the adjustment efficiency of the chain length.

[0006] The purpose and effect of the chain wrench of the utility model are achieved by the following specific technical means:

[0007] A chain wrench comprises a positioning wrench head, an adjustable screwing handle, a positioning installation shaft, a handle length adjustment structure, a fixed adapter frame, a positioning chain, an anti-skid structure, a positioning structure, a length adjustment screw and a chain adjustment sprocket; the length adjustment screw is rotatably connected to the left side of the positioning wrench head; the adjustable screwing handle is threadedly connected to the outside of the length adjustment screw; the positioning installation shaft is rotatably connected to the upper part of the positioning wrench head; the handle length adjustment structure is arranged on the left side of the positioning wrench head; the fixed adapter frame is fixedly connected to the right side of the positioning wrench head; the positioning chain is fixedly connected to the right side of the fixed adapter frame; the anti-skid structure is arranged on the outside of the positioning chain; the chain adjustment sprocket is fixedly connected to the lower side of the positioning installation shaft; the positioning structure is arranged on the upper part of the positioning wrench head.

[0008] Furthermore, the positioning structure includes a positioning square groove and a guide installation groove; the positioning square groove is provided in plurality, and a circular array of the plurality of positioning square grooves is opened on the outer side of the positioning installation shaft; the guide installation groove is opened on the upper part of the fixed adapter frame.

[0009] Furthermore, the positioning structure also includes a positioning sliding plate and a positioning square block; the positioning sliding plate is slidably connected to the upper part of the guide mounting groove; there are multiple positioning square blocks, and a circular array of multiple positioning square blocks is fixedly connected to the inner side of the positioning sliding plate, and the multiple positioning square blocks are respectively slidably connected to the multiple positioning square grooves up and down.

[0010] Furthermore, the positioning structure also includes a guide storage shell and a reset elastic member; the guide storage shell is fixedly connected to the upper end surface of the positioning wrench head; there are multiple reset elastic members, and the positioning sliding plate is elastically connected to the fixed adapter frame through multiple reset elastic members.

[0011] Furthermore, the handle length adjustment structure includes a first positioning plate and a second positioning plate; the first positioning plate is fixedly connected to the left side of the positioning wrench head; and the second positioning plate is fixedly connected to the right side of the adjustable screwing handle.

[0012] Furthermore, the anti-slip structure includes an anti-wear rubber pad and an anti-drop magnet; a plurality of the anti-wear rubber pads are provided, and the plurality of the anti-wear rubber pads are evenly distributed and fixedly connected to the outside of the positioning chain; a plurality of the anti-drop magnets are provided, and the plurality of the anti-drop magnets are evenly distributed and fixedly connected to the outside of the positioning chain.

[0013] Furthermore, the handle length adjustment structure also includes a guide telescopic rod and an anti-slip operating knob; two guide telescopic rods are provided, and the two guide telescopic rods are respectively fixedly connected to the front and rear sides of the second positioning plate, and the two guide telescopic rods are fixedly connected to the first positioning plate; the anti-slip operating knob is fixedly connected to the right side of the length adjustment screw.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] By extending the length of the adjustable screwing handle, the effort consumed in installing and removing the bolts is reduced, the difficulty of installing and removing the bolts is effectively reduced, thereby improving the efficiency of installing and removing the bolts and improving the use effect of the chain wrench. After use, the adjustable screwing handle is reset to improve the portability of the chain wrench. The anti-wear rubber pad improves the tightness of the chain and the bolt, and at the same time increases the friction between the bolt and the chain, reducing the wear on the bolt. The anti-drop magnet prevents the positioning chain from slipping off the bolt when adjusting the positioning chain, avoiding repeated adjustment of the positioning chain, and effectively The positioning efficiency of the chain wrench is improved. The positioning chain is stored through the guide storage shell to avoid collision between the positioning chain and the mounting parts during the use of the chain wrench, thereby avoiding wear on the mounting parts. The positioning chain is positioned by the positioning sliding plate, the positioning square block and the positioning square groove, which effectively avoids the inconvenience of repeatedly adjusting the position of the positioning chain to find the chain hole, reduces the positioning difficulty of the positioning chain, improves the adjustment efficiency of the length of the positioning chain, and facilitates the installation and disassembly of bolts of different sizes by adjusting the length of the positioning chain, thereby effectively ensuring the versatility of the chain wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 The utility model is a schematic diagram of the split structure of the adjustable screw handle and the length adjustment screw rod.

[0018] Figure 3 It is a structural schematic diagram of the positioning chain of the utility model.

[0019] Figure 4 It is a schematic diagram of the positional relationship among the positioning and mounting shaft, the fixed adapter frame and the chain adjusting sprocket of the utility model.

[0020] Figure 5 The utility model is a schematic diagram of the disassembled structure of a positioning installation shaft, a positioning sliding plate, a fixed adapter frame and a chain adjusting sprocket.

[0021] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0022] 1. Positioning wrench head; 101. First positioning plate; 102. Guide telescopic rod; 103. Guide storage shell; 2. Adjustable screw handle; 201. Second positioning plate; 3. Positioning installation shaft; 301. Positioning square slot; 4. Fixed adapter frame; 401. Guide installation slot; 402. Positioning sliding plate; 403. Positioning square block; 404. Resetting elastic member; 5. Positioning chain; 501. Anti-wear rubber pad; 502. Anti-drop magnet; 6. Length adjustment screw; 601. Anti-slip operation knob; 7. Chain adjustment sprocket. DETAILED DESCRIPTION

[0023] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples. Example 1

[0024] As attached Figure 1 To Attachment Figure 3 As shown:

[0025] The utility model provides a chain spanner, comprising a positioning spanner head 1, an adjustable screwing handle 2, a positioning installation shaft 3, a handle length adjustment structure, a fixed adapter frame 4, a positioning chain 5, an anti-skid structure, a length adjustment screw rod 6 and a chain adjustment sprocket 7; the length adjustment screw rod 6 is rotatably connected to the left side of the positioning spanner head 1; the adjustable screwing handle 2 is threadedly connected to the outer side of the length adjustment screw rod 6; the positioning installation shaft 3 is rotatably connected to the upper part of the positioning spanner head 1; the handle length adjustment structure is arranged on the left side of the positioning spanner head 1; the fixed adapter frame 4 is fixedly connected to the right side of the positioning spanner head 1; the positioning chain 5 is fixedly connected to the right side of the fixed adapter frame 4; the anti-skid structure is arranged on the outer side of the positioning chain 5; and the chain adjustment sprocket 7 is fixedly connected to the lower side of the positioning installation shaft 3.

[0026] The handle length adjustment structure includes a first positioning plate 101 and a second positioning plate 201 ; the first positioning plate 101 is fixedly connected to the left side of the positioning wrench head 1 ; the second positioning plate 201 is fixedly connected to the right side of the adjustable screwing handle 2 .

[0027] Among them, the anti-slip structure includes an anti-wear rubber pad 501 and an anti-drop magnet 502; a plurality of anti-wear rubber pads 501 are provided, and the plurality of anti-wear rubber pads 501 are evenly distributed and fixedly connected to the outside of the positioning chain 5; a plurality of anti-drop magnets 502 are provided, and the plurality of anti-drop magnets 502 are evenly distributed and fixedly connected to the outside of the positioning chain 5.

[0028] Among them, the handle length adjustment structure also includes a guide telescopic rod 102 and an anti-slip operating knob 601; two guide telescopic rods 102 are provided, and the two guide telescopic rods 102 are respectively fixedly connected to the front and rear sides of the second positioning plate 201, and the two guide telescopic rods 102 are fixedly connected to the first positioning plate 101; the anti-slip operating knob 601 is fixedly connected to the right side of the length adjustment screw 6.

[0029] The specific usage and function of this embodiment are as follows: hold the positioning spanner head 1, rotate the anti-slip operation knob 601 to rotate the length adjustment screw rod 6, and then the adjustable screw handle 2 slides to the left to pull the guide telescopic rod 102 to unfold, and the first positioning plate 101, the second positioning plate 201 and the guide telescopic rod 102 can guide the movement of the adjustable screw handle 2. At this time, the distance between the adjustable screw handle 2 and the positioning spanner head 1 is increased, which makes it easier to install and remove bolts. After use, the adjustable screw handle 2 is adjusted back to its original position to reduce the chain The footprint of the wrench. When adjusting the length of the positioning chain 5, after putting the positioning chain 5 on the outside of the bolt, insert the positioning chain 5 into the inside of the fixed adapter frame 4. At this time, rotating the positioning installation shaft 3 can rotate the chain adjustment sprocket 7 and push the positioning chain 5 inward. When the positioning chain 5 fits the outside of the bolt, stop rotating the positioning installation shaft 3, and swing the adjustable screw handle 2 to install and disassemble the bolt. The anti-wear rubber pad 501 can increase the friction between the bolt and the chain, and the anti-drop magnet 502 can position the positioning chain 5. Example 2

[0030] As attached Figure 4 To Attachment Figure 5 As shown:

[0031] On the basis of the first embodiment, a positioning structure is further included; the positioning structure is arranged on the upper part of the positioning wrench head 1 .

[0032] Among them, the positioning structure includes a positioning square groove 301 and a guide installation groove 401; there are multiple positioning square grooves 301, and the multiple positioning square grooves 301 are arranged in a circular array on the outside of the positioning installation shaft 3; the guide installation groove 401 is opened on the upper part of the fixed adapter frame 4.

[0033] Among them, the positioning structure also includes a positioning sliding plate 402 and a positioning square block 403; the positioning sliding plate 402 is slidably connected to the upper part of the guide mounting groove 401; there are multiple positioning square blocks 403, and a circular array of multiple positioning square blocks 403 is fixedly connected to the inner side of the positioning sliding plate 402, and the multiple positioning square blocks 403 are respectively slidably connected to the multiple positioning square grooves 301 up and down.

[0034] Among them, the positioning structure also includes a guide storage shell 103 and a reset elastic member 404; the guide storage shell 103 is fixedly connected to the upper end surface of the positioning wrench head 1; there are multiple reset elastic members 404, and the positioning sliding plate 402 is elastically connected to the fixed adapter frame 4 through multiple reset elastic members 404.

[0035] The specific usage and function of this embodiment are as follows: the positioning sliding plate 402 is pressed downward to make the positioning square block 403 leave the positioning square groove 301, thereby moving the positioning sliding plate 402 to the inner side of the guide installation groove 401. At this time, rotating the positioning installation shaft 3 can make the chain adjustment sprocket 7 push the positioning chain 5 to slide along the guide storage shell 103. After the adjustment is completed, release the positioning sliding plate 402. The positioning sliding plate 402 is automatically reset under the action of the reset elastic member 404, so that the positioning square block 403 is again inserted into the positioning square groove 301 to position the positioning installation shaft 3 and the chain adjustment sprocket 7, thereby preventing the positioning chain 5 from moving.

Claims

1. A chain spanner, comprising a positioning spanner head (1), an adjustable screw handle (2), a positioning mounting shaft (3), a handle length adjustment structure, a fixed adapter frame (4), a positioning chain (5), an anti-slip structure, a positioning structure, a length adjustment screw rod (6) and a chain adjustment sprocket (7); the positioning mounting shaft (3) is rotatably connected to the upper part of the positioning spanner head (1); the fixed adapter frame (4) is fixedly connected to the right side of the positioning spanner head (1); characterized in that: The length adjustment screw (6) is rotatably connected to the left side of the positioning spanner head (1); the adjustable screw handle (2) is threadedly connected to the outside of the length adjustment screw (6); the handle length adjustment structure is arranged on the left side of the positioning spanner head (1); the positioning chain (5) is fixedly connected to the right side of the fixed adapter frame (4); the anti-slip structure is arranged on the outside of the positioning chain (5); the chain adjustment sprocket (7) is fixedly connected to the lower side of the positioning installation shaft (3); and the positioning structure is arranged on the upper part of the positioning spanner head (1).

2. A chain wrench as claimed in claim 1, characterized in that: The handle length adjustment structure comprises a first positioning plate (101) and a second positioning plate (201); the first positioning plate (101) is fixedly connected to the left side of the positioning wrench head (1); and the second positioning plate (201) is fixedly connected to the right side of the adjustable screwing handle (2).

3. A chain wrench as claimed in claim 1, characterized in that: The anti-slip structure comprises an anti-wear rubber pad (501) and an anti-drop magnet (502); a plurality of the anti-wear rubber pads (501) are evenly distributed and fixedly connected to the outer side of the positioning chain (5); and a plurality of the anti-drop magnets (502) are evenly distributed and fixedly connected to the outer side of the positioning chain (5).

4. A chain wrench as claimed in claim 2, characterized in that: The handle length adjustment structure further comprises a guide telescopic rod (102) and an anti-slip operating knob (601); the front and rear sides of the second positioning plate (201) are respectively fixedly connected to one of the guide telescopic rods (102), and the guide telescopic rod (102) is fixedly connected to the first positioning plate (101); the anti-slip operating knob (601) is fixedly connected to the right side of the length adjustment screw rod (6).

5. A chain wrench as claimed in claim 1, characterized in that: The positioning structure comprises a positioning square groove (301) and a guide installation groove (401); a plurality of the positioning square grooves (301) are arranged in a circular array on the outer side of the positioning installation shaft (3); and the guide installation groove (401) is arranged on the upper part of the fixed adapter frame (4).

6. A chain wrench as claimed in claim 5, characterized in that: The positioning structure further comprises a positioning sliding plate (402) and a positioning square block (403); the positioning sliding plate (402) is slidably connected to the upper part of the guide installation groove (401) up and down; a plurality of the positioning square blocks (403) are fixedly connected in a circular array on the inner side of the positioning sliding plate (402), and the positioning square blocks (403) are slidably connected to the positioning square groove (301) up and down.

7. A chain wrench as claimed in claim 6, characterized in that: The positioning structure further comprises a guide storage shell (103) and a reset elastic member (404); the guide storage shell (103) is fixedly connected to the upper end surface of the positioning wrench head (1); and the positioning sliding plate (402) is elastically connected to the fixed adapter frame (4) via a plurality of the reset elastic members (404).

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