Jack

Abstract

The utility model relates to the technical field of automobile repair tools, and discloses a jack which comprises a base, a large oil cylinder body and a small oil cylinder body are correspondingly installed on the base, a top disc is fixedly installed at the top end of a piston column of the large oil cylinder body, and the positions, on the two sides of the large oil cylinder body, of the base are each provided with a top disc supporting module. The top tray supporting module is used for supporting a top tray; the top tray supporting module comprises a support, a transverse shaft, a swing arm, a vertical cylinder and a screw, the support is fixed to the base, the transverse shaft is rotationally installed on the support, the swing arm is fixed to the transverse shaft, the vertical cylinder is fixed to the swing arm, a threaded sleeve is coaxially and fixedly installed at the top end of the vertical cylinder, the screw is installed in the threaded sleeve in a threaded mode, and the screw is coaxially inserted into the vertical cylinder in a sliding mode. The two top tray supporting modules are used for supporting the top tray, in this way, even if the jack breaks down and hydraulic pressure fails, the two top tray supporting modules are matched with the top tray to still support an automobile, and safety and reliability are better achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the automobile repair tool, more specifically, the utility model relates to a jack. BACKGROUND

[0002] In the automobile repair work, often need to use the jack to support the car to increase the ground clearance of the automobile chassis, it is convenient to replace the tire or other parts. The existing jack for automobile repair is mainly hydraulic jack, hydraulic jack refers to the jack that adopts plunger or hydraulic cylinder as rigid lifting piece, has compact structure, works stably, and has the characteristics such as big jacking force, self locking etc. In the working process of the existing hydraulic jack, due to the aging damage of sealing element or improper installation, oil leakage may be caused, the jack cannot maintain pressure, the jack is disabled, at this time, the vehicle body supported by the jack will suddenly drop, causing the maintenance personnel to be injured, so a jack preventing failure needs to be designed. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model provides a jack to solve the problem that the vehicle body will fall and injure the maintenance personnel after the jack is disabled in the background art.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: a jack, including base, corresponding installation big oil cylinder main body and small oil cylinder main body are installed on the base, the piston column top end of big oil cylinder main body is fixedly installed with the top disc, the base on both sides of big oil cylinder main body is respectively installed with a top disc support module, two top disc support modules are correspondingly arranged, and the top disc support module is used for supporting the top disc;The top disc support module comprises a support, a horizontal shaft, a swing arm, a vertical cylinder and a screw rod, the support is fixed on the base, the horizontal shaft is rotatably installed on the support, the swing arm is fixed on the horizontal shaft, the vertical cylinder is fixed on the swing arm, the vertical cylinder top end is coaxially fixedly installed with a threaded sleeve, the threaded sleeve is screwedly installed with a screw rod, and the screw rod is coaxially and slidingly inserted into the vertical cylinder.

[0005] As a preferred technical scheme of the utility model, a bevel gear ring is coaxially fixedly connected to the threaded sleeve, a bevel gear meshing with the bevel gear ring is arranged on one side of the bevel gear ring, a rotating shaft is coaxially fixed to the bevel gear, a supporting plate is rotatably installed on the rotating shaft, and the supporting plate is fixed to the swing arm.

[0006] As a preferred technical scheme of the utility model, a crank handle is fixedly installed at the end of the rotating shaft.

[0007] As a preferred technical scheme of the utility model, a clamping plate is fixedly installed on one side of each vertical cylinder close to the big oil cylinder main body, the clamping plate is arc-shaped, and the two clamping plates are symmetrically arranged.

[0008] As a preferred technical scheme of the utility model, two corresponding ends of the embrace plates are connected together through a connecting mechanism respectively, the connecting mechanism comprises a first fixed plate, a second fixed plate and a stud, the first fixed plate and the second fixed plate are fixed on the two embrace plates respectively, and the stud is screwed through the first fixed plate and the second fixed plate.

[0009] As a preferred technical scheme of the utility model, the top end of the screw rod is fixed with a rubber block.

[0010] Compared with the prior art, the utility model has the beneficial effects as follows:

[0011] When supporting the vehicle body, the operator can swing the swing arm towards the large oil cylinder main body side, so that the two embrace plates embrace the piston column, and the two embrace plates are connected together through the stud, then the operator rotates the threaded sleeve, the threaded sleeve drives the screw rod in it to rise until the top end of the screw rod is on the top disc, so that the two top disc support modules are used to support the top disc, so even if the jack fails and the hydraulic pressure fails, the two top disc support modules and the top disc can still support the automobile, which is more safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure diagram of the utility model jack Figure 1 ;

[0013] Figure 2 It is a structure diagram of the utility model jack Figure 2 ;

[0014] Figure 3 It is a top disc support module structure diagram of the utility model jack;

[0015] Figure 4 It is a vertical cylinder internal structure diagram of the utility model jack;

[0016] Figure 5 It is a connecting mechanism structure diagram of the utility model jack;

[0017] Figure 6 It is a working state diagram of the utility model jack Figure 1 ;

[0018] Figure 7 It is a working state diagram of the utility model jack Figure 2 .

[0019] In the figure: 1, base; 2, large oil cylinder main body; 3, small oil cylinder main body; 4, handle; 5, top disc; 6, support; 7, horizontal shaft; 8, swing arm; 9, vertical cylinder; 10, clamping plate; 11, screw rod; 12, threaded sleeve; 13, conical gear ring; 14, bevel gear; 15, rotating shaft; 16, support plate; 17, crank; 18, first fixed plate; 19, second fixed plate; 20, stud. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0021] As Figures 1 to 7 shown, the utility model provides a jack, including base 1, corresponding installation has large oil cylinder main body 2 and small oil cylinder main body 3 on base 1, the piston column top fixed mounting of large oil cylinder main body 2 has top disc 5, the base 1 of large oil cylinder main body 2 both sides respectively installs a top disc support module, two top disc support modules are correspondingly set up, and top disc support module is used for supporting top disc 5;Top disc support module includes support 6, horizontal shaft 7, swing arm 8, vertical cylinder 9, screw rod 11, support 6 is fixed on base 1, horizontal shaft 7 is rotatably installed on support 6, swing arm 8 is fixed on horizontal shaft 7, vertical cylinder 9 is fixed on swing arm 8, vertical cylinder 9 top coaxial fixed mounting has threaded sleeve 12, screw rod 11 is screwedly installed in threaded sleeve 12, and screw rod 11 is coaxially slidably inserted in vertical cylinder 9. The sliding groove is formed on the inner wall of threaded sleeve 12 along the length direction thereof, a limiting sliding block is installed in the sliding groove, the limiting sliding block is fixedly connected with the screw, so that the screw rod can only do vertical sliding in the vertical cylinder, so that the rotating threaded sleeve 12 can drive the screw rod 11 to do vertical sliding, to adjust the distance between the top end of screw rod 11 and top disc 5. The top end of screw rod 11 is fixed with a rubber block.

[0022] The threaded sleeve 12 is coaxially fixedly connected with a conical gear ring 13, the conical gear ring 13 is provided with a bevel gear 14 engaged with the conical gear ring 13, the bevel gear 14 is coaxially fixed with a rotating shaft 15, the rotating shaft 15 is rotatably installed with a support plate 16, and the support plate 16 is fixed on the swing arm 8.

[0023] The end of the rotating shaft 15 is fixedly provided with a crank 17. In actual operation, if the screw rod 11 is only driven to move by manually rotating the threaded sleeve 12, the efficiency is low, and therefore the tapered gear ring, the bevel gear 14 and the like are arranged, and the operator only needs to rotate the crank 17 to drive the rotating shaft 15 to rotate, the rotating shaft 15 drives the bevel gear 14 to rotate, the bevel gear 14 drives the tapered gear ring 13 to rotate, and the tapered gear ring 13 drives the threaded sleeve 12 to rotate, so that the driving mode is more efficient in operation, and the top disc supporting module can be quickly unfolded and worked.

[0024] Each vertical cylinder 9 is fixedly provided with a clamping plate 10 close to one side of the large oil cylinder body 2, the clamping plate 10 is in an arc shape, and the two clamping plates 10 are symmetrically arranged. Figure 1 and 2 As shown in the attached

[0025] The corresponding ends of the two clamping plates 10 are connected together through a connecting mechanism, the connecting mechanism comprises a first fixed plate 18, a second fixed plate 19 and a stud 20, the first fixed plate 18 and the second fixed plate 19 are respectively fixed on the two clamping plates 10, and the stud 20 is screwed through the first fixed plate 18 and the second fixed plate 19. Figure 5 As shown in the attached Figure 5 In order to prevent the two clamping plates 10 from moving to the two sides after being clamped on the piston column, the connecting mechanism is arranged, the two clamping plates 10 are detachably connected together by the stud 20 cooperating with the first fixed plate 18 and the second fixed plate 19, so that the two top disc supporting modules can be combined into a firm whole, and the supporting process is more stable, and when the support is not needed, the connection between the two clamping plates 10 can be released by only screwing the stud 20 to one side to move the stud 20 out of the first fixed plate 18 or the second fixed plate 19.

[0026] Working principle and use process of the utility model:

[0027] In use, before use, as shown in the attached Figure 6As shown, two top disc support modules are folded to one side, so that the top disc support module does not affect the normal lifting of the piston column, when supporting the automobile, the operator operates the handle 4 on the small oil cylinder body 3 to promote the flow of oil, so that the piston column in the large oil cylinder body 2 is lifted, the top disc 5 on the piston column will lift the automobile chassis during the lifting of the piston column, when lifted to the appropriate height, stop pressing the handle 4 at this time, then swing the swing arm 8 from the operator to the large oil cylinder body 2 side, so that the two clamping plates 10 are clamped on the piston column, and the two clamping plates 10 are connected together by the stud 20, then the operator operates the crank 17 to rotate the shaft 15, the bevel gear 14 is driven to rotate by the shaft 15, the bevel gear ring 13 is driven to rotate by the bevel gear 14, the threaded sleeve 12 is driven to rotate by the bevel gear ring 13, the screw rod 11 in the threaded sleeve 12 is driven to rise, until the screw rod 11 top end is on the top disc 5, so that the two top disc support modules are used to support the top disc 5, so even if the jack fails, the two top disc support modules and the top disc 5 can still support the automobile, which is more safe and reliable.

[0028] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that includes a list of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article, or apparatus.

[0029] Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A jack comprising a base (1) on which a large cylinder body (2) and a small cylinder body (3) are installed in correspondence, characterized in that: The piston column top end of the large oil cylinder body (2) is fixedly installed with a top disc (5), a top disc supporting module is installed on the base (1) on both sides of the large oil cylinder body (2) respectively, two top disc supporting modules are correspondingly arranged, and the top disc supporting module is used for supporting the top disc (5).

2. A jack as claimed in claim 1, wherein: The screw sleeve (12) is coaxially fixedly connected with a bevel gear ring (13), one side of the bevel gear ring (13) is provided with a bevel gear (14) engaged with the bevel gear ring (13), the bevel gear (14) is coaxially fixed with a rotating shaft (15), the rotating shaft (15) is rotatably installed with a supporting plate (16), and the supporting plate (16) is fixed on the swing arm (8).

3. A jack as claimed in claim 2, wherein: The end of the rotating shaft (15) is fixedly installed with a crank handle (17).

4. The jack of claim 1, wherein: Each of the vertical tubes (9) is fixedly installed with a clamping plate (10) close to one side of the large oil cylinder body (2), the clamping plate (10) is in a circular arc shape, and the two clamping plates (10) are symmetrically arranged.

5. A jack as claimed in claim 4, wherein: The corresponding ends of the two clamping plates (10) are connected together through a connecting mechanism respectively, the connecting mechanism comprises a first fixed plate (18), a second fixed plate (19) and a stud (20), the first fixed plate (18) and the second fixed plate (19) are correspondingly fixed on the two clamping plates (10) respectively, and the stud (20) is threaded through the first fixed plate (18) and the second fixed plate (19).

6. The jack of claim 1, wherein: The top end of the screw rod (11) is fixed with a rubber block.

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