Jack capable of improving use stability

Abstract

The utility model discloses a jack capable of improving use stability, which comprises a base, a screw connecting shaft, a screw and a supporting ejector rod assembly, the upper end and the lower end of the screw connecting shaft penetrate through the upper wall and the lower wall of the base and are respectively and rotatably connected to the upper wall and the lower wall of the base through shaft sleeves, and the top end of the screw connecting shaft is fixedly connected with a shaft connecting sleeve. The bottom end of the screw rod is fixedly connected with the shaft connecting sleeve, the supporting ejector rod assembly comprises a supporting sleeve rod, the inner wall of the bottom end of the supporting sleeve rod is connected with a nut seat, and the supporting sleeve rod is in threaded connection with the screw rod through the nut seat. And the first supporting shaft sleeve and the second supporting shaft sleeve are arranged in a matched mode, the stability of the screw is improved, impact on internal parts when the supporting ejector rod assembly retracts can be effectively reduced, and the service life is longer.

Description

Technical Field

[0001] This utility model belongs to the field of jack technology, and specifically relates to a jack that improves stability during use. Background Technology

[0002] A pole-mounted jack includes a support rod and a drive screw. The drive screw is connected to a drive mechanism, and the support rod is connected to the drive screw. The drive screw drives the support rod to move up and down, thus lifting the object. The existing pole-mounted jack has the following drawback: the base of the support rod and the base of the drive screw are in hard contact. When the support rod falls back, the base of the support rod and the base of the drive screw will collide. After long-term use, this can easily lead to instability in the overall structure of the equipment, thereby affecting the service life of the product. Utility Model Content

[0003] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a jack that improves the stability of use, so as to solve the problems existing in the prior art.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A jack with improved stability includes a base and a screw connecting shaft. The screw connecting shaft passes through the upper and lower walls of the base at both ends and is rotatably connected to the upper and lower walls of the base via bushings. A bushing connecting sleeve is fixedly connected to the top end of the screw connecting shaft. The jack also includes a screw and a support rod assembly. The bottom end of the screw is fixedly connected to the bushing connecting sleeve. The support rod assembly includes a support sleeve rod, with a nut seat connected to the inner wall of the bottom end of the support sleeve rod. The support sleeve rod is threadedly connected to the screw rod through the nut seat. The jack also includes an outer column fixedly connected to the base. The outer cylinder is sleeved on the outside of the support sleeve rod, and the support sleeve rod is attached to the inner wall of the outer cylinder and can slide up and down relative to the outer cylinder. A flexible buffer block is fixed on the inner wall near the bottom end of the outer cylinder. The screw passes through the flexible buffer block. The screw is also provided with a first support bushing and a second support bushing. The first support bushing is press-fitted to the upper part of the flexible buffer block, and the second support bushing is press-fitted to the lower part of the flexible buffer block and abuts against the top surface of the shaft connecting sleeve. The screw connecting shaft is connected to the motor through a gear transmission assembly.

[0006] Preferably, a snap-fit ​​block is formed on the inner wall of the outer column, and a clamping groove is provided on the side of the flexible buffer block, through which the flexible buffer block is snapped onto the inner wall of the outer column.

[0007] Preferably, an inwardly protruding connecting block is formed on the inner wall of the support sleeve rod, and the nut seat is welded to the connecting block.

[0008] Preferably, the end of the screw extends to form a smooth connecting section, which is sequentially press-fitted to the first support bushing, the flexible buffer block, and the second support bushing.

[0009] Preferably, an outer column connecting section extends upward from the base, the outer column is inserted into the outer column connecting section, and the outer column and the outer column connecting section are fixedly connected by two oppositely arranged nuts.

[0010] Preferably, the base is provided with a shell, and a screw connecting shaft connecting groove is provided on the ground of the shell, and the end of the screw connecting shaft is rotatably connected in the screw connecting shaft connecting groove.

[0011] In summary, the present invention has the following main advantages:

[0012] This application provides a flexible buffer block near the bottom of the screw, and the flexible buffer block is fixedly connected to the outer column. In conjunction with the first support bushing and the second support bushing, the screw's stability is improved, which can effectively reduce the impact on internal components when the support rod assembly retracts, resulting in a longer service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a side view structural diagram of the present invention;

[0015] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of AA;

[0016] Figure 4 yes Figure 3 A magnified structural diagram of A;

[0017] Figure 5 This is a partial structural schematic diagram of the present invention;

[0018] Figure 6 This is a schematic diagram of the support sleeve structure of this utility model. Detailed Implementation

[0019] Example

[0020] refer to Figures 1 to 6This embodiment describes a jack with improved stability, comprising a base 1, a screw connecting shaft 2, the upper and lower ends of which penetrate the upper and lower walls of the base and are rotatably connected to the upper and lower walls of the base via bushings, a shaft connecting sleeve 3 fixedly connected to the top of the screw connecting shaft, a screw 4, and a support rod assembly. The bottom end of the screw is fixedly connected to the shaft connecting sleeve. The support rod assembly includes a support sleeve rod 5, a nut seat 6 connected to the inner wall of the bottom end of the support sleeve rod, and the support sleeve rod threadedly connected to the screw through the nut seat. It also includes an outer column 7 fixedly connected to the base, the outer column being sleeved around the support sleeve rod, the support sleeve rod fitting against the inner wall of the outer column, and being able to slide up and down relative to the outer column. A flexible buffer block 8 is fixedly attached to the inner wall near the bottom end of the outer column, the screw passing through the flexible buffer block. A first support bushing 9 and a second support bushing 10 are also provided on the screw. The first support bushing is press-fitted above the flexible buffer block, and the second support bushing is press-fitted... Below the flexible buffer block and abutting against the top surface of the shaft connecting sleeve, the screw connecting shaft is connected to the motor via a gear transmission assembly. The gear transmission assembly is existing technology and will not be described in detail here. A snap-fit ​​block 11 is formed on the inner wall of the outer cylinder. A clamping groove 12 is provided on the side of the flexible buffer block. The flexible buffer block is snapped onto the inner wall of the outer cylinder through the clamping groove. An inwardly protruding connecting block 13 is formed on the inner wall of the support sleeve rod. The nut seat is welded to the connecting block. The end of the screw extends to form a smooth connecting section 14. The connecting section is press-fitted to the first support shaft sleeve, the flexible buffer block, and the second support shaft sleeve in sequence. An outer cylinder connecting section 15 extends upward on the base. The outer cylinder is inserted into the outer cylinder connecting section and fixedly connected to the outer cylinder and the outer cylinder connecting section by two oppositely arranged nuts 16. A shell 17 is provided outside the base. A screw connecting shaft connecting groove is provided on the ground of the shell. The end of the screw connecting shaft is rotatably connected in the screw connecting shaft connecting groove 18.

[0021] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A jack with improved stability during use, characterized in that: The system includes a base, a screw connecting shaft, and a base. The screw connecting shaft passes through the upper and lower walls of the base at both ends and is rotatably connected to the upper and lower walls of the base via bushings. A bushing is fixedly connected to the top of the screw connecting shaft. The system also includes a screw and a support rod assembly. The bottom end of the screw is fixedly connected to the bushing. The support rod assembly includes a support sleeve rod with a nut seat connected to the inner wall of the bottom end of the support sleeve rod. The support sleeve rod is threaded onto the screw through the nut seat. The system also includes an outer column fixedly connected to the base. The outer column is sleeved around the support sleeve rod, which is fitted against the inner wall of the outer column and can slide up and down relative to the outer column. A flexible buffer block is fixed near the inner wall of the bottom end of the outer column. The screw passes through the flexible buffer block. A first support bushing and a second support bushing are also provided on the screw. The first support bushing is press-fitted onto the upper part of the flexible buffer block, and the second support bushing is press-fitted onto the lower part of the flexible buffer block and abuts against the top surface of the bushing connecting shaft. The screw connecting shaft is connected to a motor via a gear transmission assembly.

2. The jack for improving stability of use according to claim 1, characterized in that: A snap-fit ​​block is formed on the inner wall of the outer column, and a clamping groove is provided on the side of the flexible buffer block, through which the flexible buffer block is snapped onto the inner wall of the outer column.

3. The jack for improving stability in use according to claim 1, characterized in that: An inwardly protruding connecting block is formed on the inner wall of the support sleeve rod, and the nut seat is welded to the connecting block.

4. The jack for improving stability in use according to claim 1, characterized in that: The end of the screw extends to form a smooth connecting section, which is sequentially press-fitted to the first support bushing, the flexible buffer block, and the second support bushing.

5. A jack for improving stability in use according to claim 1, characterized in that: An outer column connecting section extends upward from the base. The outer column is inserted into the outer column connecting section and fixedly connected to the outer column and the outer column connecting section by two oppositely arranged nuts.

6. A jack for improving stability in use according to claim 1, characterized in that: The base is provided with a shell, and a screw connecting shaft connecting groove is provided on the ground of the shell. The end of the screw connecting shaft is rotatably connected in the screw connecting shaft connecting groove.

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