CN219819594U

CN219819594U - Drawing device

Info

Publication number: CN219819594U
Application number: CN202321308772.2U
Authority: CN
Inventors: 周思彤
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-10-13
Anticipated expiration: 2033-05-26

Abstract

The utility model belongs to the technical field of hardware tools, and particularly relates to a puller, which is characterized by comprising an outer frame, a positioning frame, a reinforcing plate, floating thread blocks, two positioning block open slots, an adjusting screw rod, a handle and a lifting handle, wherein the positioning frame is arranged at the rear part of the outer frame and is fixed by a connecting pin and a pin hole, the reinforcing plate is arranged on a front panel of the outer frame, the floating thread blocks are arranged in the positioning frame, the two positioning block open slots are arranged on two side plates of the positioning frame, the adjusting screw rod is connected with the floating thread blocks in a threaded manner through the two positioning block open slots, the handle is fixed on the outer frame, and the lifting handle is fixed on the floating thread blocks. The utility model adopts an integrated structure without a hinge structure, so that the positioning of the workpiece is very simple, convenient and quick, and one person can easily complete the pre-tightening actions of the positioning of the puller and the adjusting of the screw rod; compared with the traditional claw type puller, the puller has the advantages of simple structure, easy processing, low cost, strong bearing capacity and convenient operation.

Description

Drawing device

Technical Field

The utility model belongs to the technical field of hardware tools, and particularly relates to a puller.

Background

On various mechanical equipment and various motors, bearings, couplings, backrest wheels, belt pulleys, chain wheels and the like with various types and structural forms can be arranged in places with mechanical transmission to realize the transmission and conversion of force among parts or mechanisms. In the use process of the equipment, various reasons such as equipment updating and replacement, part local damage and the like are frequently caused by the need of replacing spare parts, and a puller is frequently used for disassembling when the transmission mechanism parts are replaced. Currently, there are two-jaw and three-jaw manual or hydraulic pullers in common use. Because the characteristics of the puller structure, the hinge structure is quite large when the bearing is dismounted, when the adjusting screw rod is not stressed and the claws are in a loose state, two or more people are often required to cooperate together to pretighten the adjusting screw rod in place when the claws of the puller are required to be mounted in place, and the process is required to be repeated again when the adjusting stroke of the adjusting screw rod is finished each time, so that the operation is very tedious and troublesome, the working efficiency is greatly influenced, and a plurality of inconveniences are brought to the repairing work.

Disclosure of Invention

The utility model aims to provide a puller, which is very convenient and quick for positioning a workpiece, and one person can easily complete the pre-tightening actions of positioning the puller and adjusting a screw rod.

The aim of the utility model is realized by the following technical scheme:

the utility model relates to a puller, which is characterized by comprising an outer frame, a positioning frame, a reinforcing plate, floating thread blocks, two positioning block open slots, an adjusting screw rod, a handle and a lifting handle, wherein the positioning frame is arranged at the rear part of the outer frame and fixed by a connecting pin and a pin hole, the reinforcing plate is arranged on a front panel of the outer frame, the floating thread blocks are arranged in the positioning frame, the two positioning block open slots are arranged on two side plates of the positioning frame, the adjusting screw rod is connected with the floating thread blocks in a threaded manner through the two positioning block open slots, the handle is fixed on the outer frame, the lifting handle is fixed on the floating thread blocks,

the front panel of the outer frame is provided with a positioning groove, and the reinforcing plate is aligned with the positioning groove.

The positioning frame is of a rectangular groove body structure.

The positioning groove is an inverted V-shaped triangular groove or a trapezoid groove, and the reinforcing plate is provided with an inverted V-shaped triangular notch or a trapezoid notch.

The side plate of the outer frame is provided with a strengthening convex groove and an observation hole.

The front end polished rod of adjusting screw locate the cover be equipped with the extension bar, the rear portion of adjusting screw be outer hexagon, and the center is square recess, adjusting screw rear portion be equipped with the hand wheel.

The utility model has the advantages that:

the puller has the advantages that the puller has no hinge structure but adopts an integrated structure, so that the puller is very simple, convenient and quick to position a workpiece, and one person can easily complete the pre-tightening actions of positioning the puller and adjusting the screw rod; compared with the traditional claw type puller, the puller has the advantages of simple structure, easy processing, low cost, strong bearing capacity and convenient operation.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a general part drawing of the present utility model.

Fig. 3 is a schematic diagram of the outer frame structure of the present utility model.

Fig. 4 is a schematic view of the structure of the extension bar and the adjusting screw of the present utility model.

FIG. 5 is a graph comparing the force contact surface and the force contact area of the two-jaw and three-jaw pullers when the bearing and the coupling are disassembled.

Fig. 6 is a front view and a left side view of the working state of the present utility model when the different bearings and couplings are disassembled.

Detailed Description

Specific embodiments of the present utility model are further described below with reference to the accompanying drawings.

As shown in fig. 1 to 6, the puller of the present utility model is characterized by comprising an outer frame 1, a positioning frame 7 provided at the rear of the outer frame 1 and fixed by a connecting pin 9 and a pin hole 8, a reinforcing plate 2 provided at the front panel of the outer frame 1, floating screw blocks 4 provided in the positioning frame 7, two positioning block open grooves provided on both side plates of the positioning frame 7, an adjusting screw 5 threaded with the floating screw blocks 4 through the two positioning block open grooves, a handle 6 fixed on the outer frame 1, a lifting handle 3 fixed on the floating screw blocks 4,

the front panel of the outer frame 1 is provided with a positioning groove, and the reinforcing plate 2 is aligned with the positioning groove.

The positioning frame 7 is of a rectangular groove body structure.

The positioning groove is an inverted V-shaped triangular groove or a trapezoid groove, and the reinforcing plate 2 is provided with an inverted V-shaped triangular notch or a trapezoid notch.

The side plate of the outer frame 1 is provided with a strengthening convex groove 10 and an observation hole 11.

The front end polished rod of the adjusting screw 5 is sleeved with an extension bar 12, the rear part of the adjusting screw 5 is in an outer hexagon shape, the center of the adjusting screw is in a square groove, and the rear part of the adjusting screw 5 is provided with a hand wheel 13.

The main body of the drawing device is formed by simply processing the steel plate through cutting, bending and other processes, and the positioning frame 7 can be of a rectangular groove body structure according to the size of the requirement. The front panel of the puller is provided with an inverted V-shaped triangular notch for adapting to the shaft with different diameters, and other parts except the triangular notch area can be contacted and stressed with the bearing during working, so that the bearing stress area is greatly increased compared with that of a common claw type puller, and meanwhile, the side plates on two sides are also much larger than that of the three claw structures of the conventional claw type puller, so that the overall working strength is obviously superior to that of the common claw type puller. Because no hinge structure adopts an integrated structure, the positioning of the workpiece is very simple, convenient and quick, and one person can easily complete the pre-tightening actions of the positioning of the puller and the adjusting of the screw rod. The adjusting screw rod 5 can be detached when the relatively tight bearing is detached, and a jack is adopted to replace the adjusting screw rod. Compared with the traditional claw type drawing device, the drawing device has the characteristics of no structural complex parts, simple structure, easy processing, low cost, strong bearing capacity, convenient operation and the like

As shown in fig. 1-2, positioning block open slots are formed on two sides of the positioning frame 7, the adjusting screw 5 can slide up and down in the positioning block open slots, the positioning frame 7 is mounted on the outer frame 1 through a connecting pin 9, the floating screw 4 is mounted in the positioning frame 7 from the upper part, the adjusting screw 5 is screwed into the floating screw 4 through the positioning block open slots, the reinforcing plate 2 is placed into the outer frame 1 from the upper part, the triangular slots of the reinforcing plate 2 are aligned with the triangular slots of the outer frame 1, and various connecting modes or direct welding can be adopted on the front panel for increasing strength and preventing deformation. The handle 6 is fixed on the outer frame 1 through bolts or rivets, and the lifting handle 3 is arranged on the floating screw block 4.

When in use, the triangular positioning groove is arranged on the main shaft, so that the bearing is arranged in the outer frame 1 of the puller, and the triangular groove can stay at different positions according to different shaft diameters of the shaft. The adjusting screw 5 is adjusted to be high according to actual demands, the adjusting screw 5 is screwed in until the pretension is completed, the adjusting screw 5 is propped against the center point of the shaft, the front panel is positioned in front of the bearing, the adjusting screw 5 is continuously screwed in inwards, and the bearing can be pulled to move outwards until the disassembly is completed by driving the front panel through the side plate. When the device works normally, one or more reinforcing plates 2 are placed into the front end according to the working strength requirement to ensure that the front panel and the outer frame 1 are not deformed, and the reinforcing plates 2 can be reduced or not installed according to the situation when the bearing with smaller gap between the rear bearing and the device body is disassembled. The periphery of the floating screw thread block 4 is chamfered and keeps a certain gap with the positioning frame 7, so that clamping stagnation caused by deformation of mutual positions after being stressed in the use process is prevented, and the floating screw thread block is convenient to slide up and down in the positioning frame 7. The handle 6 is mainly used for conveniently taking and positioning when in use, and the lifting handle 3 and the handle 6 are matched for use, so that the lifting and descending of the floating thread blocks 4 are conveniently controlled.

As shown in fig. 3, the rear end is suitably reduced when a larger model is required to accommodate the use of a suitably sized positioning frame 7, also for ease of operation. The outer side of the side plate of the outer frame 1 is provided with an observation hole 11 which is beneficial to observing the alignment condition of the adjusting screw 5 and the shaft center during working, and the side plate is also provided with a reinforcing convex groove 10 in a pressing mode to strengthen the bending strength of the side plate, and the sizes of the side plate observation hole 11 and the reinforcing convex groove 10 are adjusted according to the size of the side plate. The straight side plate form may be used when it is desired to produce a smaller sized puller, and the viewing port 11 and the reinforcing groove 10 may not be machined.

As shown in fig. 4, an opening is formed at one end of the extension rod 12, and the extension rod can be sleeved on the polished rod at the front end of the adjusting screw 5, so that the extension rod can be used when a longer shaft sleeve is pulled. The rear part of the adjusting screw rod 5 is in an outer hexagon shape, is suitable for wrench rotation, is provided with a square groove at the center, and is convenient to operate by using a sleeve tool and an electric wrench. The hand wheel 15 is arranged on the adjusting screw 5 through a central hexagonal hole, the front end is positioned by means of a threaded step, and the outer side is positioned by means of inserting a cotter pin into the adjusting screw 5 for manually screwing in or screwing out the adjusting screw 5.

Fig. 5 shows the force contact surface of the front panel of the puller when the different bearings and couplings are disassembled, and the force contact area of the front panel of the puller is compared with that of the two-jaw three-jaw puller. The shaded portion is the contact surface during operation.

Fig. 6 is a front view and a left view of the operating state. Reference numeral 14 denotes a shaft, and reference numeral 15 denotes a coupling.

The puller has the advantages that the puller has no hinge structure, and adopts an integrated structure, so that the puller is very simple, convenient and quick to position a workpiece, and one person can easily complete the pre-tightening action of the puller positioning and adjusting the screw rod 5; compared with the traditional claw type puller, the puller has the advantages of simple structure, easy processing, low cost, strong bearing capacity and convenient operation.

Claims

1. The puller is characterized by comprising an outer frame, a positioning frame, a reinforcing plate, floating thread blocks, two positioning block open slots, an adjusting screw rod, a handle and a lifting handle, wherein the positioning frame is arranged at the rear part of the outer frame and fixed by a connecting pin and a pin hole, the reinforcing plate is arranged on a front panel of the outer frame, the floating thread blocks are arranged in the positioning frame, the two positioning block open slots are arranged on two side plates of the positioning frame, the adjusting screw rod is connected with the floating thread blocks in a threaded manner through the two positioning block open slots, the handle is fixed on the outer frame, the lifting handle is fixed on the floating thread blocks,

2. The puller of claim 1, wherein the positioning frame has a rectangular channel structure.

3. The puller of claim 1, wherein the positioning groove is an inverted V-shaped triangular groove or a trapezoidal groove, and the reinforcing plate has an inverted V-shaped triangular notch or a trapezoidal notch.

4. The puller of claim 1, wherein the side plates of the outer frame are provided with reinforcing grooves and viewing holes.

5. The puller as set forth in claim 1 wherein the front polished rod of the adjusting screw is sleeved with an extension bar, the rear of the adjusting screw is in the shape of an outer hexagon and has a square groove at the center, and the rear of the adjusting screw is provided with a hand wheel.