Stepless adjusting support for limit switch

Abstract

The invention relates to the technical field of limit switch supports, in particular to a stepless adjusting support for a limit switch, which comprises a clamping device, a transverse adjusting device and a longitudinal adjusting device, and is characterized in that the top of the transverse adjusting device is connected with the bottom of the clamping device, and the bottom of the transverse adjusting device is connected with the top of the longitudinal adjusting device; the transverse adjusting device comprises a second base, a second threaded rod, a linkage plate and a plurality of rubber springs. The second base is in an L shape. The top of the linkage plate and the top of the rubber spring are both fixed to the bottom of the clamping device, the bottom of the linkage plate and the bottom of the rubber spring are both slidably connected with the bottom of an inner cavity of the second base, a screw can be rotated through a screwdriver, the clamping device is moved through the screw, and operation is convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of limit switch brackets, in particular to a stepless adjustment bracket for a limit switch. Background Art

[0002] A limit switch is an electromechanical device that operates through the physical force exerted by an object. Its main function is to determine the position of an object and monitor its motion state. Existing limit switches are generally installed on equipment racks. However, some equipment vibrates greatly during operation, causing the rack to shake, which can cause the installation of the limit switch to become loose, thus affecting the overall operation of the equipment.

[0003] The patent publication number is CN217653348U, a Chinese utility model patent published on October 25, 2022, which discloses an adjustable fixed bracket for a limit switch, which can be positioned and moved in both vertical and horizontal directions along the storage component to adjust the length and height of the entire bracket so that it can adapt to various types of fluid valves. The bracket has high versatility and occupies low inventory, but when it is adjusted, more steps are required and the adjustment process is more cumbersome. Summary of the invention

[0004] In view of the above problems, the present invention provides a stepless adjustment bracket for a limit switch, which can rotate a screw rod through a screwdriver and move a clamping device through the screw rod, and is easy to operate.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A stepless adjustment bracket for a limit switch, comprising a clamping device, a lateral adjustment device and a longitudinal adjustment device, wherein the top of the lateral adjustment device is connected to the bottom of the clamping device, and the bottom of the lateral adjustment device is connected to the top of the longitudinal adjustment device. The lateral adjustment device comprises a second base, a second threaded rod, a linkage plate and a plurality of rubber springs, and the second base is L-shaped; the top of the linkage plate and the top of the rubber spring are both fixed to the bottom of the clamping device, and the bottom of the linkage plate and the bottom of the rubber spring are both slidably connected to the bottom of the inner cavity of the second base; one end of the second threaded rod is fixed to the second rotating head, and the other end of the second threaded rod sequentially passes through the side wall of the second base, the linkage plate and the rubber spring, the second threaded rod is rotatably connected to the side wall of the second base, the linkage plate is rotatably connected to the second threaded rod, and the second threaded rod and the rubber spring are clearance-matched.

[0007] Furthermore, the clamping device includes a first base, a first threaded rod, a first movable member and a fixed frame, the bottom of the first base is fixed to the top of the linkage plate, the opposite ends of the two first threaded rods are rotatably matched with the first connecting seat, the other ends of the two first threaded rods are rotatably matched with the side wall of the first base and fixed to the first rotating head; the two first movable members are threadedly connected to the outer periphery of the first threaded rod, the bottom of the first movable member is slidably connected to the top of the first base, and the top of the first movable member is fixed to the bottom of the fixed frame.

[0008] Furthermore, the two first threaded rods are longitudinally provided with grooves, and the two ends of the U-shaped member are respectively clamped in a groove.

[0009] Furthermore, a first magnetic sheet is fixed to the bottom of the groove, and a second magnetic sheet is fixed to the bottom of the U-shaped member; when the U-shaped member is engaged with the groove, the first magnetic sheet and the second magnetic sheet are attracted to each other.

[0010] Furthermore, a first ball bearing is disposed at the bottom of the first movable member, and a first sliding groove matching the first ball bearing is disposed at the top of the first base.

[0011] Furthermore, the fixing frame includes a flexible telescopic outer shell and an electrorheological fluid filled in the flexible telescopic outer shell, and the electrorheological fluid is connected to an external power source.

[0012] Furthermore, the second threaded rod is threadedly connected to the threaded sleeve, and the threaded sleeve is fixed to the linkage plate.

[0013] Furthermore, a second slide groove is formed on the side wall of the second base, and a second ball bearing that matches the second slide groove is provided on the side wall of the linkage plate.

[0014] Furthermore, a cavity is provided at the bottom of the inner cavity of the second base, and a strip hole is provided below the cavity. The longitudinal adjustment device includes a third base, a third threaded column, a scissors frame and a sliding rod. The third threaded column is arranged at the top of the third base, and both ends of the third threaded column are rotatably matched with the side walls of the third base and fixed to the third rotating head. Two second moving parts are respectively threadedly connected to the outer periphery of the third threaded column, and the bottom of the second moving part is slidably matched with the track at the top of the third base. The tops of the two second moving parts are respectively rotatably connected to one end of the bottom of the scissors frame, and the top of the scissors frame is hinged to the bottom of a sliding part after passing through the strip hole. The top of the sliding part is slidably matched with the outer periphery of the sliding rod, and the two ends of the sliding rod are fixed to the side walls of the cavity.

[0015] Furthermore, the third threaded column includes two threaded rods with opposite thread directions, and the opposite ends of the two threaded rods are rotatably connected to the second connecting seat; a sliding member and a second moving member on the same side are respectively rotatably connected to one end of the double-section rod, and a bolt is threadedly connected to the middle part of the double-section rod.

[0016] The present invention has the following beneficial effects:

[0017] 1. The present invention can rotate the screw rod by a screwdriver, and move the clamping device by the screw rod, which is easy to operate.

[0018] 2. The present invention can adjust the position of one side of the fixing frame separately according to the needs of the specific position, and can also adjust the positions of the two fixing frames at the same time by means of a U-shaped piece to better meet the needs of use.

[0019] 3. The shape of the flexible telescopic jacket of the present invention can be adjusted according to the structure of the limit switch so that the flexible telescopic jacket can fit more closely with the limit switch. After the flexible telescopic jacket wraps the limit switch, an external power supply is used to energize the inside of the electrorheological fluid to fix the shape of the flexible telescopic jacket, so that the flexible telescopic jacket can tightly fix the limit switch.

[0020] 4. The present invention drives the third threaded column to rotate by rotating the third rotating head. The left and right sections of the third rotating head have opposite directions of threads. Therefore, rotating the third rotating head on one side can drive the two second movable parts to approach or separate from each other, thereby adjusting the height of the scissor frame, so that the scissor frame drives the lateral adjustment device and the clamping device to rise and fall.

[0021] 5. The present invention drives the threaded rods through a third rotating head respectively, so that the second movable parts on the two threaded rods can adjust their positions separately according to needs. When the distances between the two second movable parts and the second connecting seat are different, the heights on both sides of the scissors frame are different, so that the transverse adjustment device and the clamping device above the scissors frame are tilted, and at the same time, the double-section rod is deformed as the positions of the sliding part and the second movable part on the same side change. After the transverse adjustment device and the clamping device are adjusted to the specified height and angle by using the scissors frame, the bolts are tightened to fix the shape of the double-section rod, thereby fixing the positions of the sliding part and the second movable part, that is, the scissors frame no longer deforms, thereby ensuring the overall stability of the longitudinal adjustment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a front view of the present invention;

[0024] Figure 3 It is a partial cross-sectional view of the present invention;

[0025] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0026] Figure 5 is a side cross-sectional view of the present invention;

[0027] Figure 6 for Figure 5 Schematic diagram of the structure of the middle A area;

[0028] Figure 7 It is a structural schematic diagram of a U-shaped member;

[0029] Figure 8 is a schematic diagram of the structure of the fixing frame;

[0030] Fig. 9 is a schematic diagram of the internal structure of the fixing frame;

[0031] Fig.10 It is a schematic diagram of the structure of the longitudinal adjustment device.

[0032] The structural diagram marked in the accompanying drawings is:

[0033] 1. Clamping device; 11. First base; 12. First threaded rod; 121. First magnetic sheet; 13. First moving part; 14. Fixed frame; 141. Flexible telescopic jacket; 142. Electrorheological fluid; 15. First rotating head; 16. U-shaped member; 161. Second magnetic sheet; 17. First ball; 18. First slide groove; 19. First connecting seat; 2. Transverse adjustment device; 21. Second base; 211. Strip hole; 22. Second rotating head; 23. Second threaded rod; 24. Linkage plate; 25. Threaded sleeve; 26. Rubber spring; 27. Second slide groove; 28. Second ball; 3. Longitudinal adjustment device; 31. Third base; 32. Third threaded column; 33. Scissors frame; 34. Double section rod; 341. Bolt; 35. Second connecting seat; 36. Third rotating head; 37. Sliding member; 38. Sliding rod; 39. Second moving part. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] like Figure 1-Figure 10As shown, the steplessly adjustable bracket of this embodiment includes a clamping device 1, a lateral adjustment device 2 and a longitudinal adjustment device 3. The top of the lateral adjustment device 2 is connected to the bottom of the clamping device 1, and the bottom of the lateral adjustment device 2 is connected to the top of the longitudinal adjustment device 3. The lateral adjustment device 2 includes a second base 21, a second threaded rod 23, a linkage plate 24 and a plurality of rubber springs 26. The second base 21 is L-shaped; the top of the linkage plate 24 and the top of the rubber spring 26 are fixed to the bottom of the clamping device 1, and the bottom of the linkage plate 24 and the bottom of the rubber spring 26 are slidably connected to the bottom of the inner cavity of the second base 21; one end of the second threaded rod 23 is fixed to the second rotating head 22, and the other end of the second threaded rod 23 passes through the side wall of the second base 21, the linkage plate 24 and the rubber spring 26 in sequence, the second threaded rod 23 is rotatably connected to the side wall of the second base 21, the linkage plate 24 is rotatably connected to the second threaded rod 23, and the second threaded rod 23 and the rubber spring 26 are clearance-matched.

[0036] The lateral adjustment device 2 can perform horizontal adjustment on the clamping device 1. When the position of the clamping device 1 needs to be adjusted, a screwdriver is used to rotate the second rotating head 22. The second rotating head 22 drives the second threaded rod 23 to rotate. The second threaded rod 23 drives the linkage plate 24 to move between the second base 21 and the clamping device 1. The linkage plate 24 drives the clamping device 1 to move laterally. The rubber spring 26 supports the clamping device to prevent the clamping device 1 from tilting due to unstable force. The vibration generated during the operation of the equipment can be alleviated by the rubber spring 26, that is, the vibration effect on the limit switch clamped by the clamping device 1 is reduced to avoid affecting the accuracy of the control of the limit switch.

[0037] Furthermore, the clamping device 1 includes a first base 11, a first threaded rod 12, a first movable member 13 and a fixed frame 14. The bottom of the first base 11 is fixed to the top of the linkage plate 24, and the opposite ends of the two first threaded rods 12 are rotatably matched with the first connecting seat 19. The other ends of the two first threaded rods 12 are rotatably matched with the side wall of the first base 11 and are fixed to the first rotating head 15; the two first movable members 13 are threadedly connected to the outer periphery of the first threaded rod 12, the bottom of the first movable member 13 is slidably connected to the top of the first base 11, and the top of the first movable member 13 is fixed to the bottom of the fixed frame 14.

[0038] The first threaded rods 12 on both sides of the first connecting seat 19 respectively adjust the position of a first movable member 13, and the two fixing frames 14 cooperate with each other to fix the limit switch. When using this device, the position of the fixing frame 14 on one side can be adjusted separately according to the needs of the specific position to better adapt to the needs of use.

[0039] Furthermore, the two first threaded rods 12 are both longitudinally provided with grooves, and the two ends of the U-shaped member 16 are respectively clamped in a groove.

[0040] When the U-shaped member 16 is inserted into the groove, the first rotating head 15 on one side can be rotated to simultaneously rotate the first threaded rod 12 on the other side under the action of the U-shaped member 16, so as to simultaneously adjust the positions of the two fixing frames 14, making the adjustment process more convenient and quick.

[0041] Furthermore, a first magnetic sheet 121 is fixed to the bottom of the groove, and a second magnetic sheet 161 is fixed to the bottom of the U-shaped member 16 ; when the U-shaped member 16 is engaged with the groove, the first magnetic sheet 121 and the second magnetic sheet 161 are attracted to each other.

[0042] The U-shaped member 16 can be conveniently installed and removed by the mutual attraction between the first magnetic sheet 121 and the second magnetic sheet 161 .

[0043] Furthermore, a first ball 17 is disposed at the bottom of the first moving member 13 , and a first sliding groove 18 matching the first ball 17 is opened at the top of the first base 11 .

[0044] By providing the first rolling ball 17 and the first sliding groove 18 , the friction between the first moving member 13 and the first base 11 is reduced.

[0045] Furthermore, the fixing frame 14 includes a flexible telescopic outer cover 141 and an electrorheological fluid 142 filled in the flexible telescopic outer cover 141 , and the electrorheological fluid 142 is connected to an external power source.

[0046] The shape of the flexible telescopic jacket 141 can be adjusted according to the structure of the limit switch so that the flexible telescopic jacket 141 can fit more closely to the limit switch. After the flexible telescopic jacket 141 wraps the limit switch, an external power supply is used to energize the inside of the electrorheological fluid 142 to fix the shape of the flexible telescopic jacket 141, so that the flexible telescopic jacket 141 can tightly fix the limit switch.

[0047] Furthermore, the second threaded rod 23 is threadedly connected to the threaded sleeve 25 , and the threaded sleeve 25 is fixed to the linkage plate 24 .

[0048] Furthermore, a second sliding groove 27 is formed on the side wall of the second base 21 , and a second ball bearing 28 matching the second sliding groove 27 is disposed on the side wall of the linkage plate 24 .

[0049] By providing the second sliding groove 27 and the second ball bearing 28, the friction between the linkage plate 24 and the second base 21 is reduced.

[0050] Furthermore, a cavity is provided at the bottom of the inner cavity of the second base 21, and a strip hole 211 is provided below the cavity. The longitudinal adjustment device 3 includes a third base 31, a third threaded column 32, a scissors frame 33 and a sliding rod 38. The third threaded column 32 is arranged at the top of the third base 31, and the two ends of the third threaded column 32 are rotatably matched with the side walls of the third base 31 and are fixed to the third rotating head 36. Two second moving members 39 are respectively threadedly connected to the outer periphery of the third threaded column 32, and the bottom of the second moving member 39 is slidably matched with the track at the top of the third base 31. The tops of the two second moving members 39 are respectively rotatably connected to one end of the bottom of the scissors frame 33. The top of the scissors frame 33 passes through the strip hole 211 and is respectively hinged to the bottom of a sliding member 37. The top of the sliding member 37 is slidably matched with the outer periphery of the sliding rod 38, and the two ends of the sliding rod 38 are fixed to the side walls of the cavity.

[0051] The third threaded column 32 is driven to rotate by rotating the third rotating head 36. The left and right threads of the third rotating head 36 are in opposite directions. Therefore, rotating the third rotating head 36 on one side can drive the two second moving members 39 to move closer to or away from each other, thereby adjusting the height of the scissor frame 33, so that the scissor frame 33 drives the lateral adjustment device 2 and the clamping device 1 to move up and down.

[0052] Furthermore, the third threaded column 32 includes two threaded rods with opposite thread directions, and the opposite ends of the two threaded rods are rotatably connected to the second connecting seat 35; a sliding member 37 and a second moving member 39 on the same side are respectively rotatably connected to one end of the double-section rod 34, and a bolt 341 is threadedly connected to the middle part of the double-section rod 34.

[0053] The third threaded column 32 is divided into two threaded rods with opposite thread directions, and the threaded rods are driven by a third rotating head 36 respectively, so that the second movable members 39 on the two threaded rods can adjust their positions individually according to needs. When the distances between the two second movable members 39 and the second connecting seat 35 are different, the heights on both sides of the scissors frame 33 are different, so that the transverse adjustment device 2 and the clamping device 1 above the scissors frame 33 are tilted, and at the same time, the double-section rod 34 is deformed as the positions of the sliding member 37 and the second movable member 39 on the same side change; after using the scissors frame 33 to adjust the transverse adjustment device 2 and the clamping device 1 to the specified height and angle, tighten the bolt 341 to fix the shape of the double-section rod 34, thereby fixing the positions of the sliding member 37 and the second movable member 39, that is, the scissors frame 33 no longer deforms, thereby ensuring the overall stability of the longitudinal adjustment device 3.

[0054] The method of use of the present invention is:

[0055] Step 1: Use screws, ear plates and other tools to fix the longitudinal adjustment device 3 to the equipment frame;

[0056] Step 2: Adjust the longitudinal adjustment device 3, and drive the threaded rod through a third rotating head 36 respectively, so that the second movable members 39 on the two threaded rods can adjust the position individually according to the demand. When the distances between the two second movable members 39 and the second connecting seat 35 are different, the heights on both sides of the scissor frame 33 are different, so that the transverse adjustment device 2 and the clamping device 1 above the scissor frame 33 are tilted, and at the same time, the double-section rod 34 is deformed as the positions of the sliding member 37 and the second movable member 39 on the same side change; after using the scissor frame 33 to adjust the transverse adjustment device 2 and the clamping device 1 to the specified height and angle, tighten the bolt 341 to fix the shape of the double-section rod 34, thereby fixing the positions of the sliding member 37 and the second movable member 39, that is, the scissor frame 33 is no longer deformed, ensuring the overall stability of the longitudinal adjustment device 3;

[0057] Step 3: Adjust the lateral adjustment device 2, use a screwdriver to rotate the second rotating head 22, the second rotating head 22 drives the second threaded rod 23 to rotate, the second threaded rod 23 drives the linkage plate 24 to move between the second base 21 and the clamping device 1, and the linkage plate 24 drives the clamping device 1 to move horizontally;

[0058] Step 4: Adjust the clamping device 1. First, insert the U-shaped piece 16 into the groove so that the second magnetic piece 161 is adsorbed and fixed to the first magnetic piece 121. Then, insert a screwdriver into the first threaded rod 12 to drive it to rotate, so that the symmetrical fixing frames 14 can move closer to or farther away from each other. After taking the U-shaped piece 16 out of the groove, rotating a first threaded rod 12 will drive the corresponding fixing frame 14 to move, so that the fixing frame 14 clamps and fixes the limit switch. After using the flexible telescopic jacket 141 to completely wrap the equipment frame, use an external power supply to energize the electrorheological fluid 142 to fix the shape of the flexible telescopic jacket 141.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stepless adjustment bracket for a limit switch, comprising a clamping device (1), a lateral adjustment device (2) and a longitudinal adjustment device (3), wherein the top of the lateral adjustment device (2) is connected to the bottom of the clamping device (1), and the bottom of the lateral adjustment device (2) is connected to the top of the longitudinal adjustment device (3), characterized in that: The lateral adjustment device (2) comprises a second base (21), a second threaded rod (23), a linkage plate (24) and a plurality of rubber springs (26); the second base (21) is L-shaped; the top of the linkage plate (24) and the top of the rubber spring (26) are both fixed to the bottom of the clamping device (1); the bottom of the linkage plate (24) and the bottom of the rubber spring (26) are both slidably connected to the bottom of the inner cavity of the second base (21); one end of the second threaded rod (23) is fixed to the second rotating head (22); the other end of the second threaded rod (23) passes through the side wall of the second base (21), the linkage plate (24) and the rubber spring (26) in sequence; the second threaded rod (23) is rotatably connected to the side wall of the second base (21); the linkage plate (24) and the second threaded rod (23) are rotatably connected; the second threaded rod (23) and the rubber spring (26) are clearance-matched.

2. A stepless adjustment bracket for a limit switch according to claim 1, characterized in that: The clamping device (1) comprises a first base (11), a first threaded rod (12), a first movable member (13) and a fixed frame (14); the bottom of the first base (11) is fixed to the top of the linkage plate (24); the opposite ends of the two first threaded rods (12) are rotationally matched with the first connecting seat (19); the other ends of the two first threaded rods (12) are rotationally matched with the side wall of the first base (11) and are fixed to the first rotating head (15); the two first movable members (13) are threadedly connected to the outer periphery of the first threaded rod (12); the bottom of the first movable member (13) is slidably connected to the top of the first base (11); and the top of the first movable member (13) is fixed to the bottom of the fixed frame (14).

3. The stepless adjustment bracket for a limit switch according to claim 2, characterized in that: The two first threaded rods (12) are both longitudinally provided with grooves, and the two ends of the U-shaped member (16) are respectively clamped in a groove.

4. The stepless adjustment bracket for a limit switch according to claim 3, characterized in that: A first magnetic sheet (121) is fixed to the bottom of the groove, and a second magnetic sheet (161) is fixed to the bottom of the U-shaped piece (16); when the U-shaped piece (16) is engaged with the groove, the first magnetic sheet (121) and the second magnetic sheet (161) attract each other.

5. The stepless adjustment bracket for a limit switch according to claim 2, characterized in that: A first ball (17) is disposed at the bottom of the first moving member (13), and a first sliding groove (18) matching the first ball (17) is provided at the top of the first base (11).

6. The stepless adjustment bracket for a limit switch according to claim 1, characterized in that: The fixing frame (14) comprises a flexible telescopic outer cover (141) and an electrorheological fluid (142) filled in the flexible telescopic outer cover (141), and the electrorheological fluid (142) is connected to an external power source.

7. The stepless adjustment bracket for a limit switch according to claim 1, characterized in that: The second threaded rod (23) is threadedly connected to the threaded sleeve (25), and the threaded sleeve (25) is fixed to the linkage plate (24).

8. The stepless adjustment bracket for a limit switch according to claim 1, characterized in that: A second sliding groove (27) is provided on the side wall of the second base (21), and a second ball (28) matching the second sliding groove (27) is provided on the side wall of the linkage plate (24).

9. The stepless adjustment bracket for a limit switch according to claim 1, characterized in that: A cavity is provided at the bottom of the inner cavity of the second base (21), and a strip-shaped hole (211) is provided below the cavity. The longitudinal adjustment device (3) comprises a third base (31), a third threaded column (32), a scissor frame (33) and a sliding rod (38). The third threaded column (32) is arranged on the top of the third base (31). Both ends of the third threaded column (32) are rotatably matched with the side wall of the third base (31) and are fixed to the third rotating head (36). Two second moving members (39) are respectively threadedly connected to the third rotating head (36). The outer periphery of the third threaded column (32), the bottom of the second movable member (39) is slidably matched with the track at the top of the third base (31), the tops of the two second movable members (39) are respectively rotatably connected to one end of the bottom of the scissor frame (33), the top of the scissor frame (33) is hinged to the bottom of a sliding member (37) after passing through the strip hole (211), the top of the sliding member (37) is slidably matched with the outer periphery of the sliding rod (38), and the two ends of the sliding rod (38) are fixed to the side walls of the cavity.

10. The stepless adjustment bracket for a limit switch according to claim 9, characterized in that: The third threaded column (32) comprises two threaded rods with opposite thread directions, and the opposite ends of the two threaded rods are rotatably connected to the second connecting seat (35); a sliding member (37) and a second moving member (39) on the same side are respectively rotatably connected to one end of the double-section rod (34), and a bolt (341) is threadedly connected in the middle of the double-section rod (34).

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