Drawing device with length-adjustable clamping jaw

Abstract

The utility model provides a puller with a length-adjustable clamping jaw, which belongs to the technical field of pullers and comprises a base, an adjusting component and a fixing component. The interior of the base is in threaded connection with a screw rod, and a plurality of mounting sleeves are hinged to the surface of the base; the rack is mounted on the surface of the clamping jaw, the mounting box is mounted on one side of the mounting sleeve, the gear is rotatably mounted in the mounting box and meshed with the rack, when the adjusting knob is rotated, the rack is driven by the gear to move, and the rack drives the clamping jaw to lift and adjust in the mounting sleeve, so that the extension length of the clamping jaw is adjusted; and an anti-skid groove is formed in the surface of the adjusting knob, so that friction between the adjusting knob and the hand is increased when the adjusting knob is held tightly.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drawing device technical field, concretely is a drawing device of adjustable length of clamping jaw. BACKGROUND

[0002] The drawing device is a common maintenance tool, and is mainly used for disassembling bearings on a shaft or other parts sleeved on the shaft. The drawing device has various types, and is divided into mechanical type and hydraulic type. The mechanical type drawing device is divided into standard jaw type drawing device, heavy-duty jaw type drawing device, three-arm jaw type drawing device, flexible type drawing device, reversible type drawing device, sliding hammer type drawing device, strong back drawing device and blind hole bearing drawing device. The hydraulic drawing device has two types of hydraulic jaw type drawing device and strong back drawing device, and can meet various applications. The hydraulic pressure is generated by a hydraulic plunger and a piston type. The current drawing device clamping jaw cannot be adjusted generally, and only parts close to the shaft end can be disassembled, so that the use range of the drawing device is limited. SUMMARY

[0003] The utility model discloses a drawing device with adjustable length of clamping jaw to solve the problem that the current drawing device clamping jaw cannot be adjusted generally, only parts close to the shaft end can be disassembled, and parts close to the middle of the shaft cannot be disassembled, so that the use range of the drawing device is limited.

[0004] To achieve the above object, the utility model provides the following technical scheme: a drawing device with adjustable length of clamping jaw, comprising a base, an adjusting assembly and a fixing assembly.

[0005] Among them: the inside screw thread connection of base has screw rod, the surface of base is hinged and is equipped with a plurality of mounting sleeves, the inside sliding installation of mounting sleeve has clamping jaw;

[0006] The adjusting assembly comprises a rack fixedly installed on the surface of the clamping jaw, a mounting box fixedly installed on one side of the mounting sleeve, a gear rotatably installed in the inside of the mounting box, the gear is meshed and connected with the rack, an adjusting knob rotatably installed on the surface of the mounting box, and one end of the adjusting knob is fixedly connected with the middle part of the gear.

[0007] The fixing assembly comprises a plurality of fixing holes penetratingly arranged on the surfaces of the clamping jaw and the mounting sleeve, a fixing rod penetratingly connected in the inside of the fixing hole, and a nut threadedly connected with one end of the fixing rod.

[0008] As a preferred scheme of the utility model: the inside of the mounting sleeve is provided with a sliding groove, the back of the clamping jaw is fixedly installed with a limiting strip, and the limiting strip is slidingly installed in the inside of the sliding groove.

[0009] As one preferred scheme of the utility model, a plurality of connecting seats are connected around the surface of the base, connecting rods are hingedly connected to the two sides of the connecting seat, and one end of the connecting rod is hingedly connected to one side of the mounting sleeve.

[0010] As one preferred scheme of the utility model, anti-dropping blocks are connected to the two ends of the rack.

[0011] As one preferred scheme of the utility model, anti-skid grooves are formed in the surface of the adjusting knob.

[0012] As one preferred scheme of the utility model, a rotating handle is fixedly installed at the top end of the screw rod.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] (1) The rack is installed on the surface of the clamping jaw, the mounting box is installed on one side of the mounting sleeve, the gear is rotatably installed in the mounting box, the gear is in meshing connection with the rack, the rack is moved by the gear when the adjusting knob is rotated, the clamping jaw is lifted and adjusted in the mounting sleeve by the rack, the length of the clamping jaw is adjusted, the parts in the middle of the shaft are conveniently pulled and disassembled, and the anti-skid grooves in the surface of the adjusting knob increase the friction with the hands when the adjusting knob is gripped.

[0015] (2) The fixing assembly is arranged, a plurality of fixing holes are formed in the surface of the clamping jaw and the mounting sleeve, the fixing holes in the surface of the clamping jaw and the mounting sleeve are corresponded when the clamping jaw is slidably adjusted in the mounting sleeve, the fixing rod is inserted into the fixing holes, and the screw cap is fixedly connected to one end of the fixing rod, so that the clamping jaw after adjustment is kept fixed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic view of the utility model;

[0017] Figure 2 It is the adjusting assembly structure schematic view of the utility model;

[0018] Figure 3 It is the fixing assembly structure schematic view of the utility model;

[0019] Figure 4 It is the connecting rod installation structure schematic view of the utility model.

[0020] In the drawing: 1, base; 2, screw rod; 3, mounting sleeve; 4, clamping jaw;

[0021] 5, adjusting assembly; 51, rack; 52, mounting box; 53, gear; 54, adjusting knob;

[0022] 6, fixing assembly; 61, fixing hole; 62, fixing rod; 63, screw cap;

[0023] 7. A chute;

[0024] 8. A limiting strip;

[0025] 9. A connecting seat;

[0026] 10. A connecting rod; 11. An anti-dropping block; 12. An anti-skid groove; 13. A rotating handle. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment. Obviously, the described embodiment is part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figure 1 - Figure 4 A drawing device with adjustable length of clamping jaw, comprising a base 1, an adjusting assembly 5 and a fixing assembly 6; a screw rod 2 is threadedly connected in the base 1, a plurality of mounting sleeves 3 are hingedly arranged on the surface of the base 1, and a clamping jaw 4 is slidingly mounted in the mounting sleeve 3.

[0029] Please refer to Figure 1 , Figure 2 The adjusting assembly 5 comprises a rack 51 fixedly arranged on the surface of the clamping jaw 4, an installation box 52 fixedly arranged on one side of the mounting sleeve 3, a gear 53 rotatably mounted in the installation box 52, the gear 53 being in meshing connection with the rack 51, an adjusting knob 54 rotatably arranged on the surface of the installation box 52, one end of the adjusting knob 54 being fixedly connected with the middle part of the gear 53, and an anti-skid groove 12 being formed in the surface of the adjusting knob 54.

[0030] In specific use, the rack 51 is arranged on the surface of the clamping jaw 4, the installation box 52 is arranged on one side of the mounting sleeve 3, the gear 53 is rotatably mounted in the installation box 52, the gear 53 is in meshing connection with the rack 51, the clamping jaw 4 is lifted and adjusted in the mounting sleeve 3 by the rack 51 driven by the gear 53 when the adjusting knob 54 is rotated, the length of the clamping jaw 4 is adjusted, the parts in the middle of the shaft are pulled and disassembled, and the anti-skid groove 12 is formed in the surface of the adjusting knob 54 to increase the friction with the hands when the adjusting knob 54 is gripped.

[0031] Please refer to Figure 1 , Figure 3The fixing assembly 6 comprises a plurality of fixing holes 61 formed through the surface of the clamping jaw 4 and the mounting sleeve 3, the inside of the fixing hole 61 is inserted with a fixing rod 62, and the one end of the fixing rod 62 is threadedly connected with a nut 63.

[0032] Specific use: the surface of the clamping jaw 4 and the mounting sleeve 3 is formed with a plurality of fixing holes 61, when the clamping jaw 4 is adjusted by sliding in the mounting sleeve 3, the fixing holes 61 on the surface of the clamping jaw 4 and the mounting sleeve 3 are corresponded, the fixing rod 62 is inserted in the fixing hole 61, and the nut 63 is fixedly connected with the one end of the fixing rod 62, so that the adjusted clamping jaw 4 is fixed.

[0033] Please refer to Figure 1 , Figure 2 The inside of the mounting sleeve 3 is formed with a sliding groove 7, and the back of the clamping jaw 4 is fixedly installed with a limiting strip 8 which is slidingly installed in the sliding groove 7.

[0034] Specific use: the inside of the mounting sleeve 3 is formed with a sliding groove 7, and the back of the clamping jaw 4 is installed with a limiting strip 8, when the clamping jaw 4 slides, the limiting strip 8 on the back of the clamping jaw 4 slides in the sliding groove 7 to limit the clamping jaw 4, so that the stability of the clamping jaw 4 is ensured.

[0035] Please refer to Figure 4 The surface of the base 1 is surrounded with a plurality of connecting seats 9, the two sides of the connecting seat 9 are hingedly connected with a connecting rod 10, and the one end of the connecting rod 10 is hingedly connected with one side of the mounting sleeve 3.

[0036] Specific use: the surface of the base 1 is surrounded with a connecting seat 9, the connecting seat 9 is hingedly connected with the mounting sleeve 3 through the connecting rod 10 on one side, so that the mounting sleeve 3 drives the clamping jaw 4 to adjust the base 1.

[0037] Please refer to Figure 2 The both ends of the rack 51 are connected with anti-dropping blocks 11.

[0038] Specific use: the both ends of the rack 51 are connected with anti-dropping blocks 11, the anti-dropping blocks 11 limit the adjustment range of the clamping jaw 4, and meanwhile avoid the gear 53 from being separated from the rack 51.

[0039] Please refer to Figure 4 The top end of the screw rod 2 is fixedly installed with a rotating handle 13.

[0040] Specific use: the rotating handle 13 installed at the top end of the screw rod 2 is convenient for driving the screw rod 2 to rotate.

[0041] A rack 51 is mounted on the surface of the clamping jaw 4, and a mounting box 52 is mounted on one side of the mounting sleeve 3, the gear 53 is rotatably mounted in the mounting box 52, the gear 53 is meshed with the rack 51, when the adjusting knob 54 is rotated, the rack 51 is driven to move by the gear 53, the clamping jaw 4 is adjusted to ascend and descend in the mounting sleeve 3, so that the length of the clamping jaw 4 is adjusted to extend, the parts in the middle of the shaft are conveniently pulled and disassembled, the surface of the adjusting knob 54 is provided with the anti-skid groove 12, so that the friction with the hand is increased when holding, a plurality of fixing holes 61 are penetrated through the surfaces of the clamping jaw 4 and the mounting sleeve 3, when the clamping jaw 4 is adjusted to slide in the mounting sleeve 3, the fixing holes 61 on the surfaces of the clamping jaw 4 and the mounting sleeve 3 are corresponded, the fixing rod 62 is inserted into the fixing hole 61, and the screw cap 63 is fixedly connected with one end of the fixing rod 62, so that the clamping jaw 4 after adjustment is fixed.

[0042] The contents not described in detail in the description belong to the prior art known by the person skilled in the art, although the utility model has been described in detail with reference to the foregoing embodiments, the person skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A drawbead with adjustable jaw length, characterized in that, Include: Base (1), the inside of the base (1) is screwed with a screw rod (2), the surface of the base (1) is hingedly provided with a plurality of mounting sleeves (3), the inside of the mounting sleeve (3) is slidably provided with a clamping jaw (4); Adjusting assembly (5), the adjusting assembly (5) comprises a rack (51) fixedly installed on the surface of the clamping jaw (4), one side of the mounting sleeve (3) is fixedly provided with a mounting box (52), the inside of the mounting box (52) is rotatably provided with a gear (53), the gear (53) is meshedly connected with the rack (51), the surface of the mounting box (52) is rotatably provided with an adjusting knob (54), one end of the adjusting knob (54) is fixedly connected with the middle part of the gear (53); The fixing assembly (6) comprises a plurality of fixing holes (61) penetratingly arranged on the surface of the clamping jaw (4) and the mounting sleeve (3), the inside of the fixing hole (61) is insertedly connected with a fixing rod (62), one end of the fixing rod (62) is screwedly connected with a nut (63).

2. The drawbead tester of claim 1, wherein: The inside of the mounting sleeve (3) is provided with a sliding groove (7), the back of the clamping jaw (4) is fixedly provided with a limiting strip (8), the limiting strip (8) is slidably installed in the inside of the sliding groove (7).

3. The drawbead tester of claim 1, wherein: The surface of the base (1) is circumferentially connected with a plurality of connecting seats (9), both sides of the connecting seat (9) are hingedly connected with a connecting rod (10), one end of the connecting rod (10) is hingedly connected with one side of the mounting sleeve (3).

4. The drawbead tester of claim 1, wherein: Both ends of the rack (51) are connected with anti-off blocks (11).

5. The drawbead tester of claim 1 wherein: The surface of the adjusting knob (54) is provided with anti-skid grooves (12).

6. The drawbead tester of claim 1 wherein: The top end of the screw rod (2) is fixedly provided with a rotating handle (13).

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