Stroke increasing auxiliary device for jack

Abstract

The utility model discloses a stroke increasing auxiliary device for a jack, and relates to the technical field of jacks. The device comprises a bottom plate, a sleeve is fixedly connected to the top of the bottom plate, a jacking rod is inserted into the sleeve, a first connector is fixedly connected to the top of the jacking rod, traction rods are symmetrically hinged to one end of the first connector, supporting rods are symmetrically and fixedly connected to the top of the bottom plate, and first jacking arms are hinged to the tops of the supporting rods. The jacking rods are driven to eject out the first connector in the length direction of the sleeve, the first connector drives the two traction rods to drag the two first jacking arms and the two second jacking arms to move close to each other around the hinged shaft, and meanwhile the second jacking arms push the second connector around the hinged shaft to drive the abutting block to abut against a workpiece. In this way, the supporting stability of the abutting block on the to-be-supported workpiece is improved, meanwhile, the jacking distance of the jacking rod is increased, and the safety of the device is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of jacks, and in particular to a stroke increasing auxiliary device for jacks. Background Art

[0002] As a mechanical device used to bear and lift heavy objects, jacks have a wide range of applications, including but not limited to automobile repair, construction, industrial maintenance, logistics and warehousing. In these applications, jacks often need to cope with various complex and special working conditions, such as narrow space and high lifting height, which put forward high requirements on the performance and travel of jacks.

[0003] Traditional jack structures mostly adopt classic and stable mechanical structures, which perform well in most conventional applications. However, due to the fixed length of their structures, the effective stroke of traditional jacks is often limited, making it difficult to meet the needs of certain special working conditions.

[0004] When the stroke needs to be increased in some special cases, the usual practice is to add a support tube to extend the lifting height of the jack. However, the disadvantage of this method is that the support tube is often not strong enough and is prone to buckling under high pressure or high load, which not only reduces the operating efficiency, but also poses a serious threat to the safety of on-site operators and may even cause personal injury. Utility Model Content

[0005] The purpose of the present application is to solve the problem that the method of extending the lifting height of the jack by adding a support tube is prone to jacking under high pressure or high load, thereby reducing the safety and lifting efficiency of the device. The present application provides a stroke increasing auxiliary device for a jack.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A stroke increasing auxiliary device for a jack comprises a base plate, a sleeve is fixedly connected to the top of the base plate, and a lifting rod is inserted into the inside of the sleeve, the top of the lifting rod is fixedly connected to a connecting head 1, one end of the connecting head 1 is symmetrically hinged with a traction rod, the top of the base plate is symmetrically fixedly connected to a support rod, the top of the support rod is hinged with a lifting arm 1, one end of the traction rod is hinged to the middle section of the lifting arm 1, the top of the lifting arm 1 is hinged with a lifting arm 2, one end of the two lifting arms 2 are hinged with a connecting head 2, the top of the connecting head 2 is fixedly connected with a resistance block, a lifting mechanism for driving the lifting rod to eject the connecting head 1 is installed inside the sleeve, and a guide component for guiding the lifting rod to move along the length direction of the connecting head 1 is installed inside the sleeve.

[0008] By adopting the above technical solution, through the combined use of the jacking mechanism and the guiding component, it is convenient to drive the jacking rod to eject the first connector along the length direction of the sleeve, and make the first connector drive the two traction rods to drive the two first jacking arms and the two second jacking arms to move closer to each other around the hinge axis. At the same time, the second jacking arm drives the second connector to drive the abutting block to abut against the workpiece around the hinge axis, thereby improving the support stability of the abutting block for the workpiece to be supported, increasing the jacking distance of the jacking rod, and enhancing the safety of the device.

[0009] Further, the jacking mechanism includes a jacking screw rotatably connected inside the sleeve. A jacking thread groove for threaded connection with the jacking screw is provided at the bottom of the jacking rod. One end of the sleeve is provided with a driving component for driving the jacking screw to rotate.

[0010] By adopting the above technical solution, through the combined use of the driving component, the guiding component, the jacking screw and the jacking thread groove, it is convenient to drive the jacking screw to form a threaded connection with the jacking rod through the jacking thread groove by starting the driving component, and cooperate with the guiding component to push the jacking rod to move along the length direction of the sleeve, improving the practicability of the device.

[0011] Further, the driving component includes a first bevel gear fixedly connected to one end of the jacking screw. A second bevel gear meshing with the first bevel gear is rotatably connected inside the sleeve. A driving motor is fixedly connected to one end of the sleeve. One end of the second bevel gear passes through the sleeve and is fixedly connected to the output end of the driving motor.

[0012] By adopting the above technical solution, through the combined use of the second bevel gear and the first bevel gear, it is convenient to drive the second bevel gear to mesh with the first bevel gear by starting the driving motor, and make the first bevel gear drive the jacking screw to rotate, improving the practicability of the device.

[0013] Further, the guiding component includes jacking sliders symmetrically and fixedly connected to one end of the jacking rod. Jacking chutes adapted to the jacking sliders are symmetrically provided inside the sleeve.

[0014] By adopting the above technical solution, through the combined use of the jacking sliders and the jacking chutes, it is convenient to drive the jacking rod to move along the inner wall of the sleeve, and make the jacking rod drive the jacking sliders to move along the length direction of the jacking chutes, further improving the practicability of the device.

[0015] Further, receiving holes are provided at the four corners of the bottom plate. An adjusting top block is inserted inside the receiving hole. Adjusting sliders are symmetrically and fixedly connected to one end of the adjusting top block. Adjusting chutes adapted to the adjusting sliders are symmetrically provided inside the receiving hole. One end of the receiving hole is provided with an adjusting component for ejecting the adjusting top block.

[0016] By adopting the above technical solution, through the combined use of the adjusting component, the receiving hole and the adjusting top block, it is convenient to drive the adjusting top block to eject or retract into the receiving hole along the length direction of the adjusting chute by screwing the adjusting component, so as to complete the adjustment of the supporting distance between the four corners of the bottom plate and the ground, thereby making the bottom plate in a horizontal state, and further improving the stability and safety of the device.

[0017] Further, the adjusting component includes an adjusting knob rotatably connected to the inner top of the receiving hole, the bottom of the adjusting knob is fixedly connected with an adjusting screw rod, and an adjusting screw groove adapted to the adjusting screw rod is provided at the top of the adjusting top block.

[0018] By adopting the above technical solution, through the combined use of the adjusting screw rod and the adjusting screw groove, it is possible to drive the adjusting top block to move along the length direction of the adjusting chute by rotating the adjusting knob, so as to facilitate driving the adjusting top block to move along the length direction of the adjusting chute and improve the practicability of the device.

[0019] Further, an adjusting ball is ball-jointed to the bottom of the adjusting top block.

[0020] By adopting the above technical solution, through the combined use of the adjusting ball and the adjusting top block, a rolling contact is formed between the bottom plate and the ground through the adjusting ball, thereby improving the smoothness of the horizontal adjustment of the bottom plate.

[0021] Further, a rubber pad is fixedly connected to the top of the contact block.

[0022] By adopting the above technical solution, through the combined use of the contact block and the rubber pad, the wear on the top of the bottom plate is effectively reduced, and the service life and stability of the device are prolonged.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. By adopting the combined use of the jacking mechanism and the guiding component, it is convenient to drive the jacking rod to eject the first connecting head along the length direction of the sleeve, and the first connecting head drives the two traction rods to drive the two first jacking arms and the two second jacking arms to move closer to each other around the hinge axis. At the same time, the second jacking arm drives the second connecting head to drive the contact block to form a contact with the workpiece around the hinge axis, thereby improving the supporting stability of the contact block for the workpiece to be supported, increasing the jacking distance of the jacking rod, and enhancing the safety of the device.

[0025] 2. By setting the cooperation use of the adjusting component with the receiving hole and the adjusting top block, it is convenient to drive the adjusting top block to eject or retract into the receiving hole along the length direction of the adjusting chute by screwing the adjusting component, so as to complete the adjustment of the supporting distance between the four corners of the bottom plate and the ground, so that the bottom plate is in a horizontal state, further improving the stability and safety of the device. Brief Description of the Drawings

[0026] Figure 1 is a three-dimensional structural schematic diagram of the device main body in the present application.

[0027] Figure 2 is an exploded view of the device main body in the present application.

[0028] Figure 3 is an internal structural schematic diagram of the receiving hole in the present application.

[0029] Description of the Reference Numerals:

[0030] 1, bottom plate; 2, sleeve; 4, jacking rod; 5, connecting head one; 6, traction rod; 7, support rod; 8, jacking arm one; 9, jacking arm two; 10, connecting head two; 11, abutting block; 12, jacking screw rod; 13, jacking screw groove; 14, bevel gear one; 15, bevel gear two; 16, drive motor; 17, jacking slider; 18, jacking chute; 19, receiving hole; 20, adjusting top block; 21, adjusting slider; 22, adjusting chute; 23, adjusting knob; 24, adjusting screw rod; 25, adjusting screw groove; 26, adjusting ball; 27, rubber pad. Detailed Description of the Preferred Embodiments

[0031] The following Figures 1-3 further describes the present application in detail.

[0032] The embodiment of the present application discloses an auxiliary device for increasing the stroke of a jack.

[0033] Referring to Figure 1 and Figure 2 , an auxiliary device for increasing the stroke of a jack, including a bottom plate 1, a sleeve 2 is fixedly connected to the top of the bottom plate 1, and a jacking rod 4 is inserted into the sleeve 2. A connecting head one 5 is fixedly connected to the top of the jacking rod 4. One end of the connecting head one 5 is symmetrically hinged with a traction rod 6. Support rods 7 are symmetrically and fixedly connected to the top of the bottom plate 1. The top of the support rod 7 is hinged with a jacking arm one 8. One end of the traction rod 6 is hinged to the middle section of the jacking arm one 8. The top of the jacking arm one 8 is hinged with a jacking arm two 9. One end of the two jacking arms two 9 is hinged with a connecting head two 10. Abutting block 11 is fixedly connected to the top of the connecting head two 10. A jacking mechanism for driving the jacking rod 4 to eject the connecting head one 5 is installed in the sleeve 2, and a guiding component for guiding the jacking rod 4 to move along the length direction of the connecting head one 5 is installed in the sleeve 2;

[0034] The lifting mechanism includes a lifting screw 12 rotatably connected to the inside of the sleeve 2, a lifting screw groove 13 threadedly connected to the lifting screw 12 is provided at the bottom of the lifting rod 4, and a driving component for driving the lifting screw 12 to rotate is installed at one end of the sleeve 2;

[0035] Moreover, the driving assembly includes a bevel gear 14 fixedly connected to one end of the jacking screw 12, a bevel gear 15 meshing with the bevel gear 14 is rotatably connected inside the sleeve 2, a driving motor 16 is fixedly connected to one end of the sleeve 2, and one end of the bevel gear 15 passes through the sleeve 2 and is fixedly connected to the output end of the driving motor 16;

[0036] Moreover, the guide assembly includes a lifting slider 17 symmetrically fixedly connected to one end of the lifting rod 4, and a lifting slot 18 adapted to the lifting slider 17 is symmetrically opened on the inner side of the sleeve 2;

[0037] Furthermore, a rubber pad 27 is fixedly connected to the top of the abutment block 11 .

[0038] When in use, first start the drive motor 16 to drive the bevel gear 2 15 to mesh with the bevel gear 1 14, and make the bevel gear 1 14 drive the lifting screw 12 to form a threaded connection with the lifting rod 4 through the lifting screw groove 13, so as to push the lifting rod 4 to drive the lifting slider 17 to move upward along the length direction of the lifting slot 18, and at the same time make the lifting rod 4 push the connecting head 1 5 to move upward along the length direction of the lifting slot 18, so that the connecting head 1 5 drives one end of the traction rod 6 to rotate around the hinge axis, and pulls the two traction rods 6 to move closer to each other around the hinge axis of the connecting head 1 5, so that the traction rod 6 rotates around the hinge axis. The shaft pulls one end of the two lifting arms 8 to move towards each other around the hinge axis with the support rod 7, so that one end of the lifting arm 8 pushes the lifting arm 29 around the hinge axis with the connecting head 2 10 to move towards each other, and pushes the connecting head 2 10 to drive the resistance block 11 to move upward along the length direction of the lifting slide 18, and drives the rubber pad 27 to form a resistance support with the workpiece to be supported, so as to facilitate the use of the traction rod 6 and the lifting arm 1 8 and the lifting arm 2 9, effectively improving the supporting stability of the resistance block 11 on the workpiece to be supported, while increasing the lifting distance of the lifting rod 4 and enhancing the safety of the device.

[0039] Reference Figure 1 and Figure 3 The four corners of the bottom plate 1 are provided with receiving holes 19, and an adjusting top block 20 is inserted inside the receiving hole 19. An adjusting slider 21 is symmetrically fixedly connected to one end of the adjusting top block 20. An adjusting slot 22 adapted to the adjusting slider 21 is symmetrically provided on the inner side of the receiving hole 19. An adjusting component for ejecting the adjusting top block 20 is installed at one end of the receiving hole 19;

[0040] Among them, the adjusting component includes an adjusting knob 23 rotatably connected to the inner top of the receiving hole 19. A bottom of the adjusting knob 23 is fixedly connected with an adjusting screw rod 24. An adjusting screw groove 25 adapted to the adjusting screw rod 24 is formed at a top of the adjusting top block 20;

[0041] Moreover, a bottom of the adjusting top block 20 is ball-jointed with an adjusting ball 26.

[0042] During use, by rotating the adjusting knob 23, the adjusting screw rod 24 is driven to form a threaded connection with the adjusting top block 20 through the adjusting screw groove 25, so as to drive the adjusting top block 20 to drive the adjusting slider 21 to move along the length direction of the adjusting chute 22. Furthermore, the adjusting top block 20 drives the adjusting ball 26 to move out of or retract into the receiving hole 19 along the length direction of the adjusting chute 22, so as to facilitate adjusting the distance that the adjusting top block 20 drives the adjusting ball 26 to move out of the receiving hole 19, thereby adjusting the distance between the four corners of the bottom plate 1 and the ground contact, completing the adjustment of the supporting horizontal plane of the bottom plate 1, and further improving the stability of the device.

[0043] The implementation principle of the stroke-increasing auxiliary device for a jack in this embodiment is as follows: First, by rotating the adjusting knob 23, the adjusting screw rod 24 is driven to form a threaded connection with the adjusting top block 20 through the adjusting screw groove 25, so as to drive the adjusting top block 20 to drive the adjusting slider 21 to move along the length direction of the adjusting chute 22. Furthermore, the adjusting top block 20 drives the adjusting ball 26 to move out of or retract into the receiving hole 19 along the length direction of the adjusting chute 22, so as to facilitate adjusting the distance that the adjusting top block 20 drives the adjusting ball 26 to move out of the receiving hole 19, thereby adjusting the distance between the four corners of the bottom plate 1 and the ground contact, so that the bottom plate 1 is horizontally installed on the ground;

[0044] Then, by starting the driving motor 16, the second bevel gear 15 is driven to mesh with the first bevel gear 14, and the first bevel gear 14 drives the jacking screw rod 12 to form a threaded connection with the jacking rod 4 through the jacking screw groove 13, so as to push the jacking rod 4 to drive the jacking slider 17 to move upward along the length direction of the jacking chute 18. At the same time, the jacking rod 4 pushes the first connecting head 5 to move upward along the length direction of the jacking chute 18. Furthermore, the first connecting head 5 drives one end of the traction rod 6 to rotate around the hinge shaft, and the two traction rods 6 are driven to move closer to each other around the hinge shaft with the first connecting head 5. Thus, the traction rod 6 drives one end of the two first jacking arms 8 to move closer to each other around the hinge shaft with the support rod 7, so that one end of the first jacking arm 8 drives the second jacking arm 9 to move closer to each other around the hinge shaft with the second connecting head 10, and pushes the second connecting head 10 to drive the abutting block 11 to move upward along the length direction of the jacking chute 18, and drives the rubber pad 27 to form an abutting support with the workpiece to be supported.

Claims

1. An auxiliary device for increasing the stroke of a jack, comprising a bottom plate (1), characterized in that: A sleeve (2) is fixedly connected to the top of the bottom plate (1), and a jacking rod (4) is inserted into the sleeve (2). A first connecting head (5) is fixedly connected to the top of the jacking rod (4). One end of the first connecting head (5) is symmetrically hinged with a traction rod (6). Support rods (7) are symmetrically and fixedly connected to the top of the bottom plate (1). A first jacking arm (8) is hinged to the top of the support rod (7). One end of the traction rod (6) is hinged to the middle section of the first jacking arm (8). A second jacking arm (9) is hinged to the top of the first jacking arm (8). One ends of the two second jacking arms (9) are hinged with a second connecting head (10). A contact block (11) is fixedly connected to the top of the second connecting head (10). A jacking mechanism for driving the jacking rod (4) to push out the first connecting head (5) is installed inside the sleeve (2), and a guiding component for guiding the jacking rod (4) to move along the length direction of the first connecting head (5) is installed inside the sleeve (2).

2. The stroke increasing auxiliary device for a jack according to claim 1, characterized in that: The jacking mechanism includes a jacking screw rod (12) rotatably connected inside the sleeve (2). A jacking screw groove (13) threadedly connected to the jacking screw rod (12) is formed at the bottom of the jacking rod (4). A driving component for driving the jacking screw rod (12) to rotate is installed at one end of the sleeve (2).

3. The stroke increasing auxiliary device for a jack according to claim 2, characterized in that: The driving component includes a first bevel gear (14) fixedly connected to one end of the jacking screw rod (12). A second bevel gear (15) meshing with the first bevel gear (14) is rotatably connected inside the sleeve (2). A driving motor (16) is fixedly connected to one end of the sleeve (2). One end of the second bevel gear (15) passes through the sleeve (2) and is fixedly connected to the output end of the driving motor (16).

4. The travel-increasing auxiliary device for a jack according to claim 1, wherein: The guiding component includes jacking sliders (17) symmetrically and fixedly connected to one end of the jacking rod (4). Jacking chutes (18) adapted to the jacking sliders (17) are symmetrically formed inside the sleeve (2).

5. An auxiliary device for increasing the stroke of a jack according to claim 1, characterized in that: Receiving holes (19) are formed at the four corners of the bottom plate (1). An adjusting top block (20) is inserted into the receiving hole (19). Adjusting sliders (21) are symmetrically and fixedly connected to one end of the adjusting top block (20). Adjusting chutes (22) adapted to the adjusting sliders (21) are symmetrically formed inside the receiving hole (19). An adjusting component for pushing out the adjusting top block (20) is installed at one end of the receiving hole (19).

6. The stroke increasing auxiliary device for a jack according to claim 5, characterized in that: The adjusting component includes an adjusting knob (23) rotatably connected to the inner top of the receiving hole (19). An adjusting screw rod (24) is fixedly connected to the bottom of the adjusting knob (23). An adjusting screw groove (25) adapted to the adjusting screw rod (24) is formed at the top of the adjusting top block (20).

7. An auxiliary device for increasing the stroke of a jack according to claim 5, characterized in that: An adjusting ball (26) is ball-jointed to the bottom of the adjusting top block (20).

8. An auxiliary device for increasing the stroke of a jack according to claim 1, characterized in that: A rubber pad (27) is fixedly connected to the top of the contact block (11).

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