Double-axis equipment frame body capable of clamping various shells

By designing a displacement clamping mechanism and a positioning protection mechanism in the double-axis equipment frame, the problem of cumbersome shell clamping and fixing operations in the prior art is solved, efficient clamping and conveying of various shells is achieved, and clamping efficiency is improved.

CN222890914UActive Publication Date: 2025-05-23CHANGSHAN ZHENG LI MECHANICAL & ELECTRICAL CO LTD
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Patent Information

Application Number
CN202421790341.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-26
Publication Date
2025-05-23
Estimated Expiration
2034-07-26

AI Technical Summary

Technical Problem

When the existing dual-axis equipment frame clamping and fixing the shell, workers need to move the shell below the cylinder clamping head and adjust it to the center position. The operation is cumbersome and affects the clamping efficiency.

Method used

A two-axis equipment frame body including a displacement clamping mechanism and a positioning protection mechanism is designed. The displacement clamping mechanism realizes horizontal and vertical conveying of the housing through a combination of a first displacement motor, a drive lead screw and a clamping member. The positioning protection mechanism realizes centering alignment and protection of the housing by combining the positioning trigger rod, trigger rack and protective shield.

Benefits of technology

Through the design of the frame of this equipment, efficient clamping and conveying of multiple shells is achieved, the operation of workers is simplified, the housing placement and adjustment time is reduced, and the clamping efficiency is improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a double-axis equipment frame body capable of clamping various shells, belongs to the technical field of machining equipment, and aims at solving the problems that in the prior art, the shells need to be adjusted to the center positions by workers, operation is tedious, and the clamping efficiency of the shells is affected. Comprising a first displacement frame body, a first displacement sliding block, a second displacement sliding block, a clamping fixing frame, a clamping driving air cylinder, a positioning driving box, a displacement clamping mechanism and a positioning protection mechanism. The second displacement sliding block is connected to the inner side of the first displacement sliding block in a sliding mode. The clamping driving air cylinder is fixedly connected to the upper portion of the clamping fixing frame. The positioning driving box is fixedly connected to the lower portion of the second displacement sliding block. The displacement clamping mechanism is arranged above the first displacement frame body; and the positioning protection mechanism is arranged on the inner side of the first displacement sliding block, so that centering alignment of the shell is achieved, the placement adjustment time of the shell is shortened, and the clamping efficiency of the shell is improved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing equipment, and more specifically, particularly relates to a double-axis equipment frame which can clamp various shells. Background Art

[0002] The dual-axis equipment frame is a device architecture with dual-axis characteristics. It is usually used in industrial scenarios that require high flexibility, stability and space efficiency optimization. When processing the motor housing, it is often necessary to use a dual-axis equipment frame to transport the motor housing. In order to ensure the stability of transportation, a cylinder is generally used to clamp and fix the housing.

[0003] The existing application number is: CN202120817335.8. The utility model provides a dual-axis equipment frame for motor pump housing casting equipment, which relates to the technical field of mechanical housing casting processing, to solve the existing dual-axis frame. Since the motor housing needs to be placed on the frame, the motor housing needs to be moved significantly, and the motor housing is not fixed during movement, which easily causes the motor housing to slide to the ground, causing the fallen motor housing to be damaged. The utility model includes a fixing plate; the left end of the fixing plate is fixedly installed with an auxiliary plate that runs through the upper and lower parts; the middle part of the fixing plate is provided with a rectangular hole that runs through the upper and lower parts. In the utility model, a processed motor housing is placed on the lifting plate, the spring column is loosened, the clamp automatically moves to the left, and the left side wall of the clamp is tightly attached to the right side wall of the motor housing, and the motor housing is pushed to the left at the same time, and the motor housing is fixed by the left side wall of the clamp and the right side wall of the vertical plate, so that the motor housing will not slide to the ground when it is lifted.

[0004] Based on the above, when clamping and fixing the shell, workers are required to move the shell to the bottom of the cylinder clamping head. In order to ensure the stability of clamping, workers are generally required to adjust the shell to a central position, which is cumbersome and affects the clamping efficiency of the shell. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the utility model provides a dual-axis equipment frame which can clamp a variety of shells, so as to solve the problem that when clamping and fixing the shell, workers are required to move the shell to the bottom of the cylinder clamping head, and to ensure the stability of the clamping, workers are generally required to adjust the shell to a centered position, which is cumbersome to operate and affects the clamping efficiency of the shell.

[0006] The purpose and effect of the dual-axis equipment frame capable of clamping various shells in the utility model are achieved by the following specific technical means:

[0007] A dual-axis equipment frame capable of clamping a variety of housings, comprising a first displacement frame, a first displacement slider, a second displacement slider, a clamping fixed frame, a clamping drive cylinder, a positioning drive box, a displacement clamping mechanism and a positioning protection mechanism;

[0008] The first displacement sliding block is slidably connected to the upper part of the first displacement frame;

[0009] The second displacement slider is slidably connected to the inner side of the first displacement slider;

[0010] The clamping and fixing frame is fixedly connected above the second displacement sliding block;

[0011] The clamping drive cylinder is fixedly connected to the upper part of the clamping fixing frame;

[0012] The positioning drive box is fixedly connected below the second displacement slider;

[0013] The displacement clamping mechanism is arranged above the first displacement frame;

[0014] The positioning protection mechanism is arranged on the inner side of the first displacement sliding block.

[0015] Further, the displacement clamping mechanism includes: a first displacement motor, a first driving lead screw, a second driving lead screw and a second displacement motor;

[0016] The first displacement motor is fixedly connected to the front end of the first displacement frame;

[0017] The first driving screw is rotatably connected to the inside of the first displacement frame, the first driving screw is threadedly connected to the first displacement slider, and the first driving screw is coaxially fixedly connected to the rotating shaft of the first displacement motor;

[0018] The second driving screw is rotatably connected to the inner side of the first displacement slider, and the second driving screw is threadedly connected to the second displacement slider;

[0019] The second displacement motor is fixedly connected to the upper end of the first displacement sliding block, and the second displacement motor is coaxially fixedly connected to the second driving lead screw.

[0020] Furthermore, the displacement clamping mechanism also includes: a clamping connecting plate, a clamping replacement lead screw and a clamping member;

[0021] The clamping connecting plate is fixedly connected to the lower end of the piston rod of the clamping driving cylinder;

[0022] The clamping replacement screw is rotatably connected to the inside of the clamping connection plate;

[0023] The clamping member is slidably connected to the lower inner part of the clamping connecting plate, and a plurality of groove structures of different shapes are arranged at the lower end of the clamping member. The clamping member is threadedly connected to the clamping replacement lead screw.

[0024] Furthermore, the positioning protection mechanism includes: a protection shielding plate, a protection triggering member, a damping fixing plate and a protection damping member;

[0025] The protective shielding plate is slidably connected to the inner front end of the second displacement sliding block;

[0026] The protection trigger members are provided in two groups, and the two groups of protection trigger members are respectively fixedly connected to the inner upper end of the first displacement slider, and the two groups of protection trigger members are both arranged above the protection shielding plate;

[0027] The damping fixing plate is fixedly connected to the upper front end of the second displacement sliding block;

[0028] The protective damping member is a spring pin structure, the protective damping member is slidably connected to the inner side of the damping fixing plate, and the rear end of the protective damping member is in frictional contact with the protective shielding plate.

[0029] Furthermore, the positioning protection mechanism also includes: a positioning trigger rod, a positioning connection spring, a positioning trigger rack and a positioning trigger gear;

[0030] The positioning trigger rod is slidably connected to the inner middle position of the second displacement slider;

[0031] The positioning connection spring is fixedly connected above the second displacement slider, and the upper end of the positioning connection spring is fixedly connected to the positioning trigger rod;

[0032] There are four groups of positioning trigger racks, which are respectively fixedly connected to the bottom of the positioning trigger rod, and are all slidably connected to the inside of the positioning drive box;

[0033] There are four groups of positioning trigger gears in total. The four groups of positioning trigger gears are rotatably connected to the inside of the positioning drive box respectively, and the four groups of positioning trigger gears are respectively meshed with the positioning trigger racks.

[0034] Furthermore, the positioning protection mechanism also includes: a positioning fixing rod, a positioning lever and a positioning support spring;

[0035] The positioning fixing rods are provided with four groups in total, and the four groups of positioning fixing rods are respectively fixedly connected to the outer periphery of the positioning trigger gear;

[0036] The positioning levers are provided with four groups in total, and the four groups of positioning levers are respectively hinged to the upper ends of the positioning fixing rods;

[0037] The positioning support springs are provided in four groups in total, and all of the four groups of positioning support springs are right-angle spring structures. The four groups of positioning support springs are respectively fixedly connected to the outer periphery of the rotating shaft of the positioning lever.

[0038] Compared with the prior art, the utility model has the following beneficial effects:

[0039] The utility model places the shell above the second displacement slider through the setting of the displacement clamping mechanism, and then rotates the clamping replacement screw. The rotation of the clamping replacement screw drives the clamping member to move left and right. At this time, the groove of the clamping member is aligned with the shell, and the shells of different models can be clamped.

[0040] The utility model sets a displacement clamping mechanism, turns on the first displacement motor, and the rotation of the shaft of the first displacement motor drives the first driving screw to rotate, and the rotation of the first driving screw drives the first displacement slider to move forward and backward, and turns on the second displacement motor, and the rotation of the shaft of the second displacement motor drives the second driving screw to rotate, and the rotation of the second driving screw drives the second displacement slider to move up and down, thereby realizing horizontal and vertical transportation of the shell, facilitating the transportation of the shell and facilitating subsequent processing of the shell.

[0041] The utility model sets the positioning protection mechanism when the shell needs to be clamped. At this time, the shell is placed above the positioning trigger rod, the positioning trigger rod is squeezed and moved downward, and the positioning trigger rod moves downward to drive the positioning trigger rack to move downward, and the positioning trigger rack moves downward to drive the positioning trigger gear to rotate, and the rotation of the positioning trigger gear drives the positioning fixing rod to rotate, and the rotation of the positioning fixing rod drives the positioning lever to rotate, and the positioning lever rotates to squeeze the shell toward the middle position. At this time, the second displacement slider moves downward, and the second displacement slider moves downward to drive the protective shielding plate to move downward. After the protective shielding plate moves downward and contacts with the first displacement frame, the protective shielding plate is driven to move upward to protect the shell. When the protective shielding plate moves upward to the position of the protective trigger part, the protective trigger part moves downward to squeeze the protective shielding plate, and the protective shielding plate moves downward to no longer block the shell, which is convenient for workers to take, realizes the centering alignment of the shell, facilitates the placement of the shell, reduces the placement and adjustment time of the shell, and improves the clamping efficiency of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0043] Figure 2 It is a schematic diagram of the structure of the protective triggering member of the utility model.

[0044] Figure 3 It is a schematic diagram of the structure of the protective shielding plate of the utility model.

[0045] Figure 4 It is a schematic diagram of the structure of the second driving screw of the utility model.

[0046] Figure 5 It is a structural schematic diagram of the positioning protection mechanism of the utility model.

[0047] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0048] 1. First displacement frame; 101. First displacement motor; 102. First drive lead screw; 103. Second drive lead screw; 104. Second displacement motor; 105. Clamping connecting plate; 106. Clamping replacement lead screw; 107. Clamping member; 2. First displacement slider; 3. Second displacement slider; 301. Protective shielding plate; 302. Protective trigger member; 303. Damping fixing plate; 304. Protective damping member; 305. Positioning trigger rod; 306. Positioning connecting spring; 307. Positioning trigger rack; 308. Positioning trigger gear; 309. Positioning fixing rod; 310. Positioning lever; 311. Positioning support spring; 4. Clamping fixing frame; 5. Clamping drive cylinder; 6. Positioning drive box. DETAILED DESCRIPTION

[0049] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0050] Embodiment 1:

[0051] As attached Figure 1 To Attachment Figure 5 As shown:

[0052] The utility model provides a dual-axis equipment frame that can clamp various shells, including a first displacement frame 1, a first displacement slider 2, a second displacement slider 3, a clamping fixed frame 4, a clamping drive cylinder 5, a positioning drive box 6 and a displacement clamping mechanism;

[0053] The first displacement slider 2 is slidably connected above the first displacement frame 1;

[0054] The second displacement slider 3 is slidably connected to the inner side of the first displacement slider 2;

[0055] The clamping bracket 4 is fixedly connected above the second displacement slider 3;

[0056] The clamping driving cylinder 5 is fixedly connected to the upper part of the clamping fixing frame 4;

[0057] The positioning drive box 6 is fixedly connected below the second displacement slider 3;

[0058] The displacement clamping mechanism is arranged above the first displacement frame 1 .

[0059] The displacement clamping mechanism includes: a first displacement motor 101, a first driving lead screw 102, a second driving lead screw 103, a second displacement motor 104, a clamping connecting plate 105, a clamping replacement lead screw 106 and a clamping member 107;

[0060] The first displacement motor 101 is fixedly connected to the front end of the first displacement frame 1;

[0061] The first driving screw 102 is rotatably connected to the inside of the first displacement frame 1, the first driving screw 102 is threadedly connected to the first displacement slider 2, and the first driving screw 102 is coaxially fixedly connected to the rotating shaft of the first displacement motor 101;

[0062] The second driving screw 103 is rotatably connected to the inner side of the first displacement slider 2, and the second driving screw 103 is threadedly connected to the second displacement slider 3;

[0063] The second displacement motor 104 is fixedly connected to the upper end of the first displacement slider 2, and the second displacement motor 104 is coaxially fixedly connected to the second driving screw 103;

[0064] The clamping connecting plate 105 is fixedly connected to the lower end of the piston rod of the clamping driving cylinder 5;

[0065] The clamping replacement screw 106 is rotatably connected to the inside of the clamping connection plate 105;

[0066] The clamping member 107 is slidably connected to the lower inner part of the clamping connecting plate 105 , and a plurality of groove structures of different shapes are arranged at the lower end of the clamping member 107 . The clamping member 107 is threadedly connected to the clamping replacement lead screw 106 .

[0067] When the shell needs to be transported, the shell is placed above the second displacement slider 3, and then the clamping and replacing screw 106 is rotated. The clamping and replacing screw 106 rotates to drive the clamping member 107 to move left and right. At this time, the groove of the clamping member 107 is aligned with the shell. At this time, the shells of different models are clamped, and then the clamping drive cylinder 5 is started. The piston rod of the clamping drive cylinder 5 moves downward to drive the clamping member 107 to move downward. The downward movement of the clamping member 107 realizes the clamping and fixing of the shell. At the same time, the first displacement motor 101 is turned on, and the rotation of the rotating shaft of the first displacement motor 101 drives the first driving screw 102 to rotate. The rotation of the first driving screw 102 drives the first displacement slider 2 to move forward and backward. The second displacement motor 104 is turned on, and the rotation of the rotating shaft of the second displacement motor 104 drives the second driving screw 103 to rotate. The second driving screw 103 rotates to drive the second displacement slider 3 to move up and down. At this time, the horizontal and vertical directions of the shell are transported, which is convenient for the transportation of the shell and the subsequent processing of the shell.

[0068] Embodiment 2:

[0069] The utility model provides a dual-axis equipment frame that can clamp various shells. Based on the first embodiment, Figures 1 to 5 As shown, the positioning protection mechanism is arranged on the inner side of the first displacement slider 2.

[0070] The positioning protection mechanism includes: a protection shielding plate 301, a protection trigger member 302, a damping fixing plate 303, a protection damping member 304, a positioning trigger rod 305, a positioning connection spring 306, a positioning trigger rack 307, a positioning trigger gear 308, a positioning fixing rod 309, a positioning lever 310 and a positioning support spring 311;

[0071] The protective shielding plate 301 is slidably connected to the inner front end of the second displacement slider 3;

[0072] There are two groups of protective trigger members 302, which are respectively fixedly connected to the inner upper end of the first displacement slider 2, and are both arranged above the protective shielding plate 301;

[0073] The damping fixing plate 303 is fixedly connected to the upper front end of the second displacement sliding block 3;

[0074] The protective damping member 304 is a spring pin structure, and the protective damping member 304 is slidably connected to the inner side of the damping fixing plate 303, and the rear end of the protective damping member 304 is in frictional contact with the protective shielding plate 301;

[0075] The positioning trigger rod 305 is slidably connected to the inner middle position of the second displacement slider 3;

[0076] The positioning connection spring 306 is fixedly connected above the second displacement slider 3, and the upper end of the positioning connection spring 306 is fixedly connected to the positioning trigger rod 305;

[0077] There are four groups of positioning trigger racks 307, which are respectively fixedly connected to the bottom of the positioning trigger rod 305, and are all slidably connected to the inside of the positioning drive box 6;

[0078] There are four groups of positioning trigger gears 308, which are rotatably connected to the inside of the positioning drive box 6, and are meshed with the positioning trigger racks 307 respectively.

[0079] There are four groups of positioning fixing rods 309, and the four groups of positioning fixing rods 309 are respectively fixedly connected to the outer periphery of the positioning trigger gear 308;

[0080] There are four groups of positioning levers 310, and the four groups of positioning levers 310 are respectively hinged to the upper ends of the positioning fixing rods 309;

[0081] There are four groups of positioning support springs 311 in total. The four groups of positioning support springs 311 are all right-angle spring structures. The four groups of positioning support springs 311 are respectively fixedly connected to the outer periphery of the rotating shaft of the positioning lever 310 .

[0082] When the shell needs to be clamped during use, the shell is placed above the positioning trigger rod 305, and the positioning trigger rod 305 is squeezed and moved downward. The positioning trigger rod 305 moves downward, driving the positioning trigger rack 307 to move downward. The positioning trigger rack 307 moves downward, driving the positioning trigger gear 308 to rotate. The positioning trigger gear 308 rotates and drives the positioning fixing rod 309 to rotate. The positioning fixing rod 309 rotates and drives the positioning lever 310 to rotate. The positioning lever 310 rotates and squeezes the shell toward the middle position, thereby realizing the centering alignment of the shell, facilitating the placement of the shell, and reducing The time for placing and adjusting the shell is reduced, and the clamping efficiency of the shell is improved. At this time, the second displacement slider 3 is moved downward, and the second displacement slider 3 moves downward to drive the protective shielding plate 301 to move downward. After the protective shielding plate 301 moves downward and contacts with the first displacement frame 1, the protective shielding plate 301 is driven to move upward to protect the shell. When the protective shielding plate 301 moves upward to the position of the protective trigger member 302, the protective trigger member 302 moves downward to squeeze the protective shielding plate 301. The protective shielding plate 301 moves downward and no longer blocks the shell, which is convenient for workers to take.

[0083] In this article, there are a few points to note:

[0084] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0085] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0086] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A dual-axis equipment frame capable of clamping a variety of housings, comprising a first displacement frame (1), a first displacement slider (2), a second displacement slider (3), a clamping fixed frame (4), a clamping drive cylinder (5), a positioning drive box (6), a displacement clamping mechanism and a positioning protection mechanism; characterized in that: The first displacement slider (2) is slidably connected to the top of the first displacement frame (1); the second displacement slider (3) is slidably connected to the inner side of the first displacement slider (2); the clamping frame (4) is fixedly connected to the top of the second displacement slider (3); the clamping drive cylinder (5) is fixedly connected to the top of the clamping frame (4); the positioning drive box (6) is fixedly connected to the bottom of the second displacement slider (3); the displacement clamping mechanism is arranged above the first displacement frame (1); and the positioning protection mechanism is arranged on the inner side of the first displacement slider (2).

2. A dual-axis equipment frame capable of clamping a variety of housings as claimed in claim 1, characterized in that: The displacement clamping mechanism comprises: a first displacement motor (101), a first driving lead screw (102), a second driving lead screw (103) and a second displacement motor (104); the first displacement motor (101) is fixedly connected to the front end of the first displacement frame (1); the first driving lead screw (102) is rotatably connected to the inside of the first displacement frame (1), the first driving lead screw (102) is threadedly connected to the first displacement slider (2), and the first driving lead screw (102) is coaxially fixedly connected to the rotating shaft of the first displacement motor (101); the second driving lead screw (103) is rotatably connected to the inner side of the first displacement slider (2), and the second driving lead screw (103) is threadedly connected to the second displacement slider (3); the second displacement motor (104) is fixedly connected to the upper end of the first displacement slider (2), and the second displacement motor (104) is coaxially fixedly connected to the second driving lead screw (103).

3. A dual-axis equipment frame capable of clamping a variety of housings as claimed in claim 2, characterized in that: The displacement clamping mechanism further comprises: a clamping connection plate (105), a clamping replacement lead screw (106) and a clamping member (107); the clamping connection plate (105) is fixedly connected to the lower end of the piston rod of the clamping drive cylinder (5); the clamping replacement lead screw (106) is rotatably connected to the inside of the clamping connection plate (105); the clamping member (107) is slidably connected to the lower part of the inside of the clamping connection plate (105); a plurality of groove structures of different shapes are arranged at the lower end of the clamping member (107), and the clamping member (107) is threadedly connected to the clamping replacement lead screw (106).

4. A dual-axis equipment frame capable of clamping a variety of housings as claimed in claim 1, characterized in that: The positioning protection mechanism comprises: a protection shielding plate (301), a protection triggering member (302), a damping fixing plate (303) and a protection damping member (304); the protection shielding plate (301) is slidably connected to the inner front end of the second displacement slider (3); two groups of protection triggering members (302) are provided, the two groups of protection triggering members (302) are respectively fixedly connected to the inner upper end of the first displacement slider (2), and the two groups of protection triggering members (302) are both provided above the protection shielding plate (301); the damping fixing plate (303) is fixedly connected to the upper front end of the second displacement slider (3); the protection damping member (304) is a spring pin structure, the protection damping member (304) is slidably connected to the inner side of the damping fixing plate (303), and the rear end of the protection damping member (304) is in frictional contact with the protection shielding plate (301).

5. A dual-axis equipment frame capable of clamping a variety of housings as claimed in claim 4, characterized in that: The positioning protection mechanism further comprises: a positioning trigger rod (305), a positioning connection spring (306), a positioning trigger rack (307) and a positioning trigger gear (308); the positioning trigger rod (305) is slidably connected to the middle position of the inner side of the second displacement slider (3); the positioning connection spring (306) is fixedly connected to the upper side of the second displacement slider (3), and the upper end of the positioning connection spring (306) is fixedly connected to the positioning trigger rod (305); a total of four groups of positioning trigger racks (307) are provided, the four groups of positioning trigger racks (307) are respectively fixedly connected to the lower side of the positioning trigger rod (305), and the four groups of positioning trigger racks (307) are all slidably connected to the inside of the positioning drive box (6); a total of four groups of positioning trigger gears (308) are provided, the four groups of positioning trigger gears (308) are respectively rotatably connected to the inside of the positioning drive box (6), and the four groups of positioning trigger gears (308) are respectively meshed with the positioning trigger racks (307).

6. A dual-axis equipment frame capable of clamping a variety of housings as claimed in claim 5, characterized in that: The positioning protection mechanism further comprises: a positioning fixing rod (309), a positioning lever (310) and a positioning support spring (311); the positioning fixing rod (309) is provided in four groups, and the four groups of positioning fixing rods (309) are respectively fixedly connected to the outer periphery of the positioning trigger gear (308); the positioning lever (310) is provided in four groups, and the four groups of positioning levers (310) are respectively hinged to the upper end of the positioning fixing rod (309); the positioning support spring (311) is provided in four groups, and the four groups of positioning support springs (311) are all of right-angle spring structures, and the four groups of positioning support springs (311) are respectively fixedly connected to the outer periphery of the rotating shaft of the positioning lever (310).

Citation Information

Patent Citations

  • Double-axis equipment frame body of motor pump shell casting equipment

    CN215546800U