Compression spring device

Abstract

The utility model provides a compression spring device, which belongs to the field of high-voltage switch part installation and comprises a main support frame and a pressing piece, the main support frame is a U-shaped frame, two vertical plate sections are provided with connecting pieces used for being fixedly connected with a spring installation frame, and a guide structure is arranged between a transverse plate section and the pressing piece. A jack is further arranged between the transverse plate section and the downward pressing piece. The compression spring device is fixedly connected with the spring mounting frame through the connecting pieces on the two vertical plates, it is guaranteed that the downward pressing piece keeps linear motion in the vertical direction all the time in the moving process through the guide structure between the transverse plate section and the downward pressing piece, the phenomenon that when the device compresses a spring, the device inclines, and consequently the spring pops out is avoided, and the service life of the device is prolonged. And the downward pressing piece is driven to press downwards through the jack, so that one operator can finish the downward pressing operation, the working intensity of the operator is reduced, and the working time is shortened.

Description

Technical Field

[0001] The utility model relates to a compression spring device and belongs to the field of high-voltage switch component installation. Background Art

[0002] In existing high voltage switches, such as Figure 1 As shown, the spring mechanism includes a spring mounting frame 10 and a closing spring arranged inside the spring mounting frame 10. The spring mounting frame 10 includes a base and a frame body fixed on the upper end of the base. The frame body is two U-shaped frames fixed on the base. The closing spring is arranged between the two U-shaped frames. Spring pull plates are also installed on both sides of the spring mechanism. Pull plate mounting shafts are respectively provided at the top of the closing spring and the lower end of the spring mounting frame 10. Mounting shaft holes are provided at both ends of the pull plate. When the pull plates on both sides are installed on the spring mechanism, the closing spring needs to be compressed.

[0003] In the prior art, a closing spring in a spring mechanism is compressed by a screw compression device, the screw compression device comprises an upper pressure plate, a lower pressure piece and a device mounting block, the lower pressure piece is fixed to the upper pressure plate by a fixing rod, the device mounting block is fixed to the frame body of the spring mounting frame when in use, openings are provided at both ends of the upper pressure plate, screws are fixed at both ends of the device mounting block, the screws are inserted into the openings at both ends of the upper pressure plate, the lower ends are connected to the device mounting block, an adjusting nut is provided at the upper position of the screw on the upper pressure plate, and the upper pressure is achieved by simultaneously screwing the adjusting nuts in the screws at both ends. When the pressure plate and the lower pressure piece move downward and the screw compression device compresses the closing spring, two workers are required to use a ratchet wrench to rotate the adjusting nuts on the two screws at the same speed. The adjusting nuts drive the upper pressure plate and the lower pressure piece to press downward. This process takes a long time and consumes a lot of manpower. In addition, two workers are required to maintain the same screwing speed to screw the adjusting nuts on the screws at both ends. If the rotational momentum at both ends is inconsistent, the upper pressure plate will be tilted, and the compression device will be ejected, threatening the safety of the operators and posing a safety hazard. Utility Model Content

[0004] The utility model aims to provide a compression spring device to solve the problems in the prior art that when a closing spring is compressed by a screw, the adjusting nuts in the screws at both ends need to be screwed at the same speed, the compression operation takes a long time, and there are safety hazards.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a compression spring device, including a main support frame and a lower pressure piece, the main support frame is a U-shaped frame, two vertical plate sections are provided with connecting pieces for fixed connection with the spring mounting frame, a guide structure is provided between the horizontal plate section and the lower pressure piece, and a jack is also provided between the vertical plate section and the lower pressure piece.

[0006] Furthermore, the jack is an electric hydraulic jack.

[0007] Furthermore, the connecting member is a fixing bolt.

[0008] Furthermore, the guide structure includes a guide hole opened on the transverse plate section of the main support frame and a positioning shaft fixed on the top of the lower pressing member, and the positioning shaft is inserted into the guide hole.

[0009] Furthermore, the transverse plate section and the vertical plate section of the main support frame are an integrated structure.

[0010] Furthermore, the lower pressing member is a lower supporting frame structure, including a horizontal plate and four vertical supports, and the horizontal plate is arranged above the vertical supports and connects the four vertical supports.

[0011] Furthermore, a positioning sleeve is provided on the positioning shaft between the main support frame and the lower support frame, and the length of the positioning sleeve is greater than the length when the jack is not working.

[0012] Furthermore, a linear bearing is provided in the guide hole of the main support frame.

[0013] Furthermore, a cap is provided at the upper end of the positioning shaft.

[0014] Beneficial effects: Compared with the prior art, the utility model provides an improved compression spring device, including a main support frame, a pressure piece and a jack. The main support frame is a U-shaped frame. The jack is arranged between the main support frame and the pressure piece. The fixed connection between the compression spring device and the spring mounting frame is realized by the connecting pieces on the two vertical plates. The guide structure arranged between the horizontal plate section and the pressure piece ensures that the pressure piece always maintains linear motion in the vertical direction during the movement, avoiding the phenomenon of the device tilting and causing popping when compressing the spring, eliminating safety hazards, and driving the pressure piece downward by the jack. One operator can complete the pressing operation, reducing the operator's work intensity and shortening the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the compression spring device of the utility model;

[0016] Figure 2 This is the front view of the compression spring device of the utility model;

[0017] Figure 3 The utility model is a structural schematic diagram of the compression spring device when working on the spring mounting frame.

[0018] In the figure: 1. main support frame; 2. electric jack; 3. lower pressure piece; 31. horizontal plate; 32. vertical support; 4. positioning shaft; 5. positioning sleeve; 6. linear bearing; 7. spare cap; 8. mounting hole; 9. fixing bolt; 10 spring mounting frame. DETAILED DESCRIPTION

[0019] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0020] The present application provides a compression spring device, including a main support frame 1, a pressure piece 3 and a jack. The main support frame 1 is a U-shaped frame. The jack is arranged between the main support frame 1 and the pressure piece 3. The main support frame is fixed to the spring mounting frame 10 by fixing bolts. The guide structure arranged between the cross plate section and the pressure piece 3 ensures that the pressure piece 3 always maintains linear motion in the vertical direction during the movement, and the pressure piece 3 is driven downward by the jack.

[0021] Embodiment 1 in the present utility model is as follows Figure 2 , 3 As shown, a compression spring device includes a main support frame 1 and a pressing piece 3, a jack is provided between the main support frame 1 and the pressing piece 3, in this embodiment the jack is an electric hydraulic jack 2, in other embodiments it can also be a mechanical jack, an electric jack, etc.; the main support frame 1 is a U-shaped frame, including a horizontal plate section and two vertical plate sections, the horizontal plate section is arranged above the vertical plate section and connects the two vertical plate sections, the two vertical plate sections are provided with connecting members for fixed connection with the spring mounting frame 10, in this embodiment, the connecting member is a fixing bolt 9, and the vertical plate section of the main support frame 1 is provided with a mounting hole 8, in other embodiments, it can also be connected by a latch.

[0022] In order to reduce the overall weight of the device, the lower pressure piece 3 includes a horizontal plate 31 and more than two vertical supports 32. The horizontal plate 31 is arranged above the vertical supports 32 and connects the vertical supports 32. In the present embodiment, there are 4 vertical supports 32 of the lower pressure piece 3, which are arranged around the horizontal plate 31. In other embodiments, the lower pressure piece 3 can also be arranged as a U-shaped frame; if the weight problem is not considered, the lower pressure piece 3 can also be designed as an integral block structure; a guide structure is provided between the horizontal plate section of the main support frame 1 and the lower pressure piece 3. In the present embodiment, the guide structure includes a positioning shaft 4 arranged on the upper end surface of the lower pressure piece 3 and a guide hole opened on the horizontal plate section of the main support frame 1, and the positioning shaft 4 is guided and installed in the guide hole; when the electric hydraulic jack 2 drives the lower pressure piece to move downward, the positioning shaft 4 and the guide hole can ensure that the lower pressure piece 3 always maintains linear motion in the vertical direction during the movement process without deflection; there are 4 positioning shafts 4, which are evenly arranged around the horizontal plate 32 of the lower pressure piece. In other embodiments, 2 or more positioning shafts can also be arranged and evenly arranged around the jack.

[0023] In order to ensure that the electric hydraulic jack 2 can be smoothly installed between the lower pressure piece 3 and the main support frame 1, a positioning sleeve 5 is provided between the lower pressure piece 3 and the main support frame 1, and the length of the positioning sleeve 5 is greater than the length of the electric hydraulic jack 2 when it is not working; in order to ensure a good guiding effect between the positioning shaft 4 and the guide hole, a linear bearing 6 is provided in the guide hole of the main support frame 1; a spare cap 7 is provided on the top of the upper end of the positioning shaft to limit the downward pressing distance of the lower pressure piece 3.

[0024] In this embodiment, the main support frame 1 is an integrated U-shaped frame. In other embodiments, the vertical plate and the horizontal plate of the main support frame 1 are separately arranged and connected by screws.

[0025] In this embodiment, the guide structure is the positioning shaft 4 on the lower pressure piece 3 and the guide hole on the main support frame. In other embodiments, the guide structure can also be a telescopic rod, which is arranged between the lower pressure piece 3 and the main support frame 1, and one end of the telescopic rod is fixed on the main support frame 1, and the other end is fixed on the lower pressure piece 3.

[0026] In this embodiment, in order to achieve a good guiding effect of the positioning shaft 4, a linear bearing 6 is provided in the guide hole. In other embodiments, the linear bearing 6 can also be omitted, and the positioning shaft 4 is directly guided and matched with the guide hole.

[0027] In this embodiment, a positioning sleeve 5 is provided between the pressing member 3 and the main support frame 1 , and the guiding sleeve 5 may be omitted in other embodiments.

[0028] Working principle: A compression spring device of the present technical solution is used, and the main support frame 1 in the compression spring device is fixed on the spring mounting frame 10 by the fixing bolts 3, and the electric hydraulic jack 2 is started. The electric hydraulic jack 2 drives the lower pressure piece 3 to move downward, wherein the positioning shaft 4 on the lower pressure piece 3 is used to cooperate with the guide hole on the main support frame 1 to ensure that the lower pressure piece 3 always moves in a straight line in the vertical direction during the movement process, so as to avoid the device from tilting and causing the device to pop out.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compression spring device, comprising a main support frame and a pressing member, characterized in that: The main support frame is a U-shaped frame, and two vertical plate sections are provided with connecting pieces for fixed connection with the spring mounting frame. A guide structure is provided between the horizontal plate section and the lower pressure piece, and a jack is also provided between the horizontal plate section and the lower pressure piece.

2. The compression spring device according to claim 1, characterized in that: The jack is an electric hydraulic jack.

3. The compression spring device according to claim 1, characterized in that: The connecting piece is a fixing bolt.

4. The compression spring device according to claim 1, characterized in that: The guide structure comprises a guide hole formed on the transverse plate section of the main support frame and a positioning shaft fixed on the top of the pressing member, wherein the positioning shaft is inserted into the guide hole.

5. The compression spring device according to claim 1 or 4, characterized in that: The transverse plate section and the vertical plate section of the main support frame are an integrated structure.

6. The compression spring device according to claim 1, characterized in that: The lower pressing member is a lower supporting frame structure, which includes a horizontal plate and more than two vertical supports. The horizontal plate is arranged above the vertical supports and connects the vertical supports.

7. The compression spring device according to claim 5, characterized in that: A positioning sleeve is provided on the positioning shaft between the main support frame and the lower support frame, and the length of the positioning sleeve is greater than the length when the jack is not working.

8. The compression spring device according to claim 7, characterized in that: A linear bearing is arranged in the guide hole of the main support frame.

9. The compression spring device according to claim 8, characterized in that: The upper end portion of the positioning shaft is provided with a spare cap.

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