Tension spring assembly for jack

Abstract

The utility model relates to the field of tension springs, and discloses a tension spring assembly for a jack, which comprises an elastic piece, the lower end of the spring piece is provided with a vertically distributed lower hanging part, the upper end of the spring piece is provided with an upper hanging part, and the rear end of the right side of the upper hanging part is rotatably provided with a sealing plate; the front end of the sealing plate is fixed to the front side of the upper hanging part, a hanging cavity of an annular structure is formed between the upper hanging part and the sealing plate, the lower hanging part is arranged at the lower end of the tension spring, the hanging ring of the annular structure is arranged on the lower hanging part, and the upper hanging part is arranged at the upper end of the tension spring, so that the lower hanging part is fixed to the lower end of the tension spring. And a sealing plate is rotationally arranged on the arc-shaped hook of the upper hanging part, and the sealing plate can shield the notch of the arc-shaped hook, so that the tension spring can be blocked after being hung, and the notch of the upper hanging part cannot fall off.

Description

Technical Field

[0001] The utility model relates to the field of tension springs, in particular to a tension spring assembly for a jack. Background Art

[0002] The tension spring is a key component of the jack. It helps transmit force and balance the load by compressing and stretching. When the jack is used to lift a heavy object, the internal tension spring will shrink and generate corresponding pressure. This pressure produces a self-locking effect on the jack, so that after the hydraulic pipe is cut off, the load will not automatically drop, thereby ensuring the safety and smoothness of the work. The current tension spring is provided with hooks for hanging at both ends. The hook is usually an open arc structure. When installing the tension spring on the jack, one end of the tension spring needs to be sleeved on the jack first, and then the other end is stretched and fixed to the other end of the jack. Usually, a tool is used to pull the hook at the upper end of the tension spring upward to stretch the entire tension spring. If the hook is unevenly stressed when pulled upward, it is easy to be straightened and cannot be used. The hook is an open arc structure, which is also easy to fall off when the tension spring is relaxed. For this reason, we designed a tension spring assembly for a jack. Utility Model Content

[0003] In order to solve the technical problem that when the tension spring is relaxed, the hook in an open arc structure is prone to fall off, the utility model provides a tension spring assembly for a jack.

[0004] The utility model is implemented by the following technical scheme: a tension spring assembly for a jack, comprising a spring member, the lower end of the spring member is provided with a vertically distributed lower hanging portion, the upper end of the spring member is installed with an upper hanging portion, and a sealing plate is rotatably installed at the right rear end of the upper hanging portion, the front end of the sealing plate is fixed to the front side of the upper hanging portion, and a hanging cavity with an annular structure is formed between the upper hanging portion and the sealing plate.

[0005] As a further improvement of the above scheme, the upper half of the upper hanging part is curved to form an arc-shaped hook, and the bottom end of the arc-shaped hook is flattened to form a flat portion, and the flat portion is rotatably connected to the rear end of the sealing plate through an axle pin, which facilitates the installation of the sealing plate. The sealing plate can be expanded or closed as needed, and can be sealed after the tension spring is hung, so that the upper hanging part has no gap for falling off.

[0006] As a further improvement of the above scheme, the rear half of the sealing plate is designed to be arc-shaped, and the front half of the sealing plate is designed to be horizontal. The front side of the outer ring of the upper hanging part is an integrated fixing plate. The fixing plate and the front side of the sealing plate are both provided with circular holes. Bolts are sleeved in the circular holes, and nuts are threaded on the bolts. The sealing plate can seal or open the notch of the upper hanging part as needed, thereby facilitating the installation and disassembly of the tension spring.

[0007] As a further improvement of the above scheme, the upper end of the spring member is bent inward to form an upper connecting portion, the inner end of the upper connecting portion is vertically designed to face upward to form a connecting screw head 1, and the lower end of the upper hanging portion is provided with an upper threaded sleeve, and the connecting screw head 1 is threadedly connected to the upper threaded sleeve, which facilitates the installation and disassembly of the upper hanging portion, and further facilitates the replacement of the upper hanging portion.

[0008] As a further improvement of the above scheme, the lower end of the spring member is bent inward to form a lower connecting portion, and the inner end of the lower connecting portion is designed to be vertically downward to form a second connecting screw head. A lower threaded sleeve is provided at the lower end of the lower hanging portion, and the second connecting screw head is threadedly connected to the lower threaded sleeve, which facilitates the installation and disassembly of the lower hanging portion, and further facilitates the replacement of the lower hanging portion.

[0009] As a further improvement of the above scheme, the end of the lower hanging part away from the lower threaded sleeve is bent and designed to form a hanging ring with a sealing structure, and the hanging ring is welded at both ends. The hanging ring is a closed ring structure, which will not deform when pulled and is convenient for direct sleeve fixing.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The utility model provides a lower hanging part at the lower end of the tension spring, and a hanging ring of an annular structure is provided on the lower hanging part, and an upper hanging part is provided on the upper end of the tension spring. A sealing plate is rotatably provided on the arc-shaped hook of the upper hanging part, and the sealing plate can block the notch of the arc-shaped hook and can block the tension spring after it is hung, so that the notch of the upper hanging part will not fall off;

[0012] 2. By respectively arranging connecting screw head 1 and connecting screw head 2 at both ends of the upper end of the spring member, and cooperating with the upper threaded sleeve and the lower threaded sleeve arranged on the upper hanging part and the lower hanging part, the upper hanging part and the lower hanging part can be quickly installed and disassembled, thereby facilitating their replacement. When the tension spring is in use, there is no need to replace the entire tension spring due to damage to the barb. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a tension spring assembly for a jack provided by the utility model;

[0014] Figure 2 for Figure 1 Front view of the diagram;

[0015] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0016] Figure 4 for Figure 1 Schematic diagram of the structure of the spring component.

[0017] Description of main symbols:

[0018] 1. Spring part; 11. Connecting screw head 1; 12. Connecting screw head 2; 2. Lower hanging part; 21. Lower threaded sleeve; 22. Hanging ring; 3. Upper hanging part; 31. Arc hook; 32. Flat part; 33. Fixing plate; 34. Bolt; 35. Upper threaded sleeve; 4. Closing plate; 41. Axle pin. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0020] Example:

[0021] Please combine Figure 1-Figure 4 A tension spring assembly for a jack in this embodiment includes a spring member, a lower hanging portion 2 distributed vertically is provided at the lower end of the spring member 1, an upper hanging portion 3 is installed at the upper end of the spring member 1, and a sealing plate 4 is rotatably installed at the right rear end of the upper hanging portion 3, the front end of the sealing plate 4 is fixed to the front side of the upper hanging portion 3, and a hanging cavity with an annular structure is formed between the upper hanging portion 3 and the sealing plate 4.

[0022] The upper half of the upper hanging part 3 is curved to form an arc-shaped hook 31, and the bottom end of the arc-shaped hook 31 is flattened to form a flat part 32. The flat part 32 is rotatably connected to the rear end of the sealing plate 4 through an axle pin 41, which is convenient for the installation of the sealing plate 4. The sealing plate 4 can be expanded or closed as needed, and then it can be sealed after the tension spring is hung, so that the gap of the upper hanging part 3 will not fall off.

[0023] The rear half of the sealing plate 4 is designed to be arc-shaped, and the front half of the sealing plate 4 is designed to be horizontal. A fixing plate 33 is integrally formed on the front side of the outer ring of the upper hanging part 3. Circular holes are provided on the fixing plate 33 and the front side of the sealing plate 4. Bolts 34 are sleeved in the circular holes, and nuts are threadedly connected to the bolts 34. The sealing plate 4 can seal or open the gap of the upper hanging part 3 as needed, thereby facilitating the installation and disassembly of the tension spring.

[0024] The upper end of the spring member 1 is bent inward to form an upper connecting portion, and the inner end of the upper connecting portion is vertically designed to face upward to form a connecting screw head 11. The lower end of the upper hanging portion 3 is provided with an upper threaded sleeve 35, and the connecting screw head 11 is threadedly connected to the upper threaded sleeve 35, which is convenient for installation and disassembly of the upper hanging portion 3, and further convenient for replacement of the upper hanging portion 3.

[0025] The lower end of the spring member 1 is bent inward to form a lower connecting portion, and the inner end of the lower connecting portion is vertically designed to face downward to form a connecting screw head 12. A lower threaded sleeve 21 is provided at the lower end of the lower hanging portion 2. The connecting screw head 12 is threadedly connected to the lower threaded sleeve 21 to facilitate the installation and disassembly of the lower hanging portion 2, and then to facilitate the replacement of the lower hanging portion 2.

[0026] The end of the lower hanging part 2 away from the lower threaded sleeve 21 is bent to form a hanging ring 22 with a sealing structure, and the hanging ring 22 is welded at both ends. The hanging ring 22 is a closed annular structure, which will not deform when pulled and is convenient for direct sleeve fixing.

[0027] The implementation principle of a tension spring assembly for a jack in the embodiment of the present application is as follows: in actual use, first, the lower hanging part 2 at the lower end of the tension spring is sleeved on the straight rod at the lower end of the jack through the hanging ring 22, and then the tension spring is stretched as a whole and the arc hook 31 of the upper hanging part 3 is hung on the upper straight rod, and finally the front end of the sealing plate 4 is aligned with the flat part 32, and then fixed by bolts 34 and nuts; when the upper hanging part 3 and the lower hanging part 2 are damaged and need to be replaced, the upper hanging part 3 and the lower hanging part 2 are unscrewed and replaced with new upper hanging part 3 and lower hanging part 2;

[0028] By arranging a lower hanging part 2 at the lower end of the tension spring, and arranging a hanging ring 22 of an annular structure on the lower hanging part 2, an upper hanging part 3 is arranged at the upper end of the tension spring, and a sealing plate 4 is rotatably arranged on the arc-shaped hook 31 of the upper hanging part 3, the sealing plate 4 can block the gap of the arc-shaped hook 31, and can block it after the tension spring is hung, so that the gap of the upper hanging part 3 will not fall off;

[0029] By respectively arranging a connecting screw head 11 and a connecting screw head 2 12 at both ends of the upper end of the spring member 1, and cooperating with an upper threaded sleeve 35 and a lower threaded sleeve arranged on the upper hanging part 3 and the lower hanging part 2, the upper hanging part 3 and the lower hanging part 2 can be quickly installed and disassembled, thereby facilitating their replacement. When the tension spring is in use, there is no need to replace the entire tension spring due to damage to the barb.

[0030] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A tension spring assembly for a jack, comprising a spring member, characterized in that: The lower end of the spring component (1) is provided with a vertically distributed lower hanging portion (2), the upper end of the spring component (1) is installed with an upper hanging portion (3), and a sealing plate (4) is rotatably installed at the right rear end of the upper hanging portion (3), the front end of the sealing plate (4) is fixed to the front side of the upper hanging portion (3), and a hanging cavity with an annular structure is formed between the upper hanging portion (3) and the sealing plate (4).

2. A tension spring assembly for a jack as claimed in claim 1, characterized in that: The upper half of the upper hanging portion (3) is curved to form an arc-shaped hook (31), and the bottom end of the arc-shaped hook (31) is flattened to form a flat portion (32). The flat portion (32) is rotatably connected to the rear end of the sealing plate (4) via an axle pin (41).

3. A tension spring assembly for a jack as claimed in claim 1, characterized in that: The rear half of the sealing plate (4) is designed to be arc-shaped, and the front half of the sealing plate (4) is designed to be horizontal. A fixing plate (33) is integrally formed on the front side of the outer ring of the upper hanging part (3). The fixing plate (33) and the front side of the sealing plate (4) are both provided with circular holes, and bolts (34) are sleeved in the circular holes, and nuts are threadedly connected to the bolts (34).

4. A tension spring assembly for a jack as claimed in claim 1, characterized in that: The upper end of the spring member (1) is bent inwardly to form an upper connecting portion, and the inner end of the upper connecting portion is vertically upward to form a connecting screw head (11); An upper threaded sleeve (35) is provided at the lower end of the upper hanging portion (3), and the first connecting screw head (11) is threadedly connected to the upper threaded sleeve (35).

5. A tension spring assembly for a jack as claimed in claim 1, characterized in that: The lower end of the spring member (1) is bent inwardly to form a lower connecting portion, and the inner end of the lower connecting portion is vertically downwardly designed to form a second connecting screw head (12); A lower threaded sleeve (21) is provided at the lower end of the lower hanging portion (2), and the second connecting screw head (12) is threadedly connected to the lower threaded sleeve (21).

6. A tension spring assembly for a jack as claimed in claim 5, characterized in that: One end of the lower hanging portion (2) away from the lower threaded sleeve (21) is bent to form a hanging ring (22) with a sealing structure, and the hanging ring (22) is welded at both ends.

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