Adjustable motor structure

Abstract

The utility model provides a kind of adjustable motor structure, belong to motor technical field. Including motor main body and terminal box, terminal box is by the base fixed in motor main body and the box body that can rotate relative to base, base top is fixed with cylinder, box body is invertedly encased in cylinder outer, first annular flange is equipped in the circumference of cylinder, second annular flange is equipped in box body inner wall, adjusting cavity is formed between box body and cylinder, annular pressing plate is slidably arranged in adjusting cavity, annular pressing plate is connected with the first annular flange in upper side by several springs, annular pressing plate is pressed tightly on the upper surface of second annular flange under the action of spring, the circumferential of base top is equipped with multiple positioning grooves, second annular flange bottom is equipped with the positioning block corresponding with positioning groove. The utility model can realize the quick, tool-free adjustment of terminal box direction, easy to operate, and positioning is accurate and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology and relates to an adjustable motor structure. Background Technology

[0002] To facilitate the connection of electrical wires, a junction box is installed on the outside of the motor frame. The junction box contains terminal blocks or wiring boards to realize the electrical connection between the external power cable and the motor stator winding leads. Traditionally, the junction box and the motor frame are usually separate structures. The part on the motor frame that mates with the junction box base is called the junction box boss or junction box base. The junction box base is installed on the outside of the motor with bolts.

[0003] Patent document CN223451739U discloses a series motor with a heat sink, relating to the field of series motor technology. It includes a series motor body, with a front cover and a rear cover respectively located on the front and rear sides of the motor body. A motor shaft is located at the front end of the motor body, a junction box is located at the top of the motor body, heat sink fins are evenly arranged circumferentially on the outer side of the motor body, and mounting plates are located on both sides of the bottom of the motor body.

[0004] However, the aforementioned existing technologies still have the following shortcomings: In existing technologies, the junction box of a motor is fixedly installed on top of the series-wound motor body. Although this fixed installation method is simple in structure, it has obvious limitations in practical applications, mainly because adjusting the direction of the junction box is extremely inconvenient. Due to the uniqueness and directionality of the junction box boss and its screw holes, when the direction of the junction box outlet needs to be adjusted due to on-site installation space, cable routing, or operation and maintenance requirements (for example, from east to south, west, or north), the operator needs to completely remove all the bolts that fix the junction box to the boss. Then, lift the entire junction box and manually rotate it to the desired direction. Finally, realign the screw holes and tighten the bolts again.

[0005] This ultimately leads to cumbersome operating procedures, excessive time consumption, and increased labor costs, especially in situations where installation space is limited or repeated adjustments are required, severely impacting construction efficiency. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing an adjustable motor structure. This solves the problem mentioned in the background art that when the junction box of a motor needs to be changed in direction, it is often necessary to first remove the junction box, change its direction, and then reinstall it. This process is cumbersome and inconvenient, affecting construction efficiency.

[0007] The objective of this utility model can be achieved through the following technical solutions: An adjustable motor structure includes a motor body and a junction box, characterized in that the junction box consists of a base fixed to the motor body and a box body that can rotate relative to the base; A cylinder is fixed to the top of the base, and the box body is inverted and fitted onto the outside of the cylinder. A first annular flange is provided on the outer circumference of the cylinder, and a second annular flange is provided on the inner wall of the box body. An adjustment cavity is formed between the box body and the cylinder. An annular pressure plate is slidably provided in the adjustment cavity. The annular pressure plate is connected to the first annular flange above by several springs. Under the action of the springs, the annular pressure plate is pressed against the upper surface of the second annular flange. Multiple sets of positioning grooves are provided around the top of the base, and a positioning block corresponding to the positioning groove is provided at the bottom of the second annular flange.

[0008] The box can rotate relative to the base after being lifted, and achieve circumferential positioning during reset through the cooperation of the positioning element with different positioning slots.

[0009] Furthermore, the inner peripheral wall of the annular pressure plate is fixed with several guide blocks, and the outer peripheral wall of the cylinder is provided with a vertical guide groove that matches the guide blocks. The guide blocks are embedded in the guide groove and can slide up and down along it.

[0010] A guiding mechanism consisting of guide blocks and vertical guide grooves is provided to ensure that the annular pressure plate can only rise and fall smoothly in the vertical direction.

[0011] Furthermore, an annular PTFE gasket is fixed to the bottom of the annular pressure plate, and the bottom of the PTFE gasket abuts against the top of the second annular flange.

[0012] PTFE material has an extremely low coefficient of friction and self-lubricating properties, which can significantly reduce the sliding friction between the two. This greatly reduces the operating force required to rotate the lifting box, making operation easier, while also reducing wear on the contact surfaces and extending the service life of the mechanism.

[0013] Furthermore, the junction box also includes a terminal block with several wiring contacts on its top. The terminal block is fixed to the motor body by bolts. The base has an opening that connects to the inside of the cylinder. The motor body has a wiring hole that connects to the opening. The upper end of the terminal block passes through the opening and is located inside the box.

[0014] Furthermore, the box body is composed of a box body and a box cover connected by bolts; the top of the terminal block is fixed with an upwardly extending round rod, the upper end of which passes through the box cover and is connected to a locking nut located outside the box cover by a threaded part at its end; and a wiring tube is provided on the side wall of the box body.

[0015] Tightening the lock nut will press the cover into place, thus ensuring the stability of the box body mounted on the motor body and reducing the impact of motor vibration on the box body.

[0016] Furthermore, the top of the base is fixed with an annular sealing boss, and the bottom of the box body is provided with an annular groove for the annular sealing boss to be inserted, and an annular sealing ring is embedded in the annular groove.

[0017] The annular sealing boss, annular groove, and annular sealing ring work together to effectively improve the protection function of the junction box and reduce the intrusion of dust and moisture into the junction box.

[0018] Furthermore, the bottom of the positioning groove is fitted with a rubber pad, and there are four positioning grooves, which are evenly distributed along the circumference.

[0019] Furthermore, it also includes two mounting feet located on the same mounting surface for installation and fixation; The lower end of the motor body is fixed with four first connecting blocks arranged in a rectangular pattern, and the upper end of the motor body is fixed with four second connecting blocks arranged in a rectangular pattern. The bottom of the first connecting block is provided with a first threaded hole, and the sides of the two first connecting blocks located on the same side of the motor body and the sides of the two second connecting blocks are all provided with second threaded holes. The machine base can be selectively connected to the first threaded holes of the corresponding two first connecting blocks located at the bottom of the motor body, or to the second threaded holes of the corresponding two first connecting blocks or the corresponding two second connecting blocks located on the same side of the motor body, by means of bolts.

[0020] By setting a first threaded hole and a second threaded hole on the bottom and side of the first connecting block, and setting a second threaded hole on the side of the second connecting block, and flexibly matching with the machine foot, the overall installation posture of the motor body can be flexibly changed. By changing the support surface of the motor body, the junction box fixed on the motor can be indirectly adapted to different spatial layout requirements. The main technical effects of this utility model are reflected in the following aspects: 1. Enables rapid, tool-free adjustment of the junction box direction: This invention completely eliminates the cumbersome process of disassembling and installing bolts using tools in traditional methods through a series of lifting, rotating, and releasing operations. Operators can adjust the junction box direction by hand in seconds without any tools, greatly improving the efficiency of installation, debugging, and maintenance.

[0021] 2. Simple operation and accurate and reliable positioning: After the box is lifted, it can rotate freely in the full circumference. The bottom of the positioning block can move along the base. When it rotates to the preset direction, under the pressure of the spring, the positioning block will automatically and reliably embed into the corresponding positioning groove, accompanied by a clear sense of positioning. Compared with the existing technology that requires the bolt holes and bolts to be aligned one by one, this utility model does not require manual positioning and alignment, thus improving the efficiency of operation. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of an embodiment of the present utility model; Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged view of point A in the middle; Figure 4 This is an exploded view of the junction box according to an embodiment of the present utility model; Figure 5 This is an exploded view of an embodiment of the present invention; Figure 6 This is an embodiment of the present utility model. Figure 2 Enlarged view of point B in the middle; Figure 7 This is a schematic diagram of the box body according to an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Motor body; 2. Junction box; 3. Cylinder; 4. First annular flange; 5. Second annular flange; 6. Adjustment cavity; 7. Annular pressure plate; 8. Spring; 9. Positioning groove; 10. Positioning block; 11. Guide block; 12. Guide groove; 13. PTFE gasket; 14. Terminal block; 15. Terminal contact; 16. Box body; 17. Box cover; 18. Round rod; 19. Threaded part; 20. Locking nut; 21. Connecting pipe; 22. Annular sealing boss; 23. Annular groove; 24. Base; 25. Box body; 26. Annular sealing ring; 27. Rubber pad; 28. Second threaded hole; 29. ​​Machine foot; 30. First connecting block; 31. Second connecting block; 32. First threaded hole; 33. Opening; 34. Wiring hole. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] like Figure 1-4 As shown, an adjustable motor structure includes a motor body 1 and a junction box 2. The junction box 2 consists of a base 24 fixed to the motor body 1 and a box body 25 that can rotate relative to the base 24. A cylinder 3 is fixed to the top of the base 24, and the box body 25 is upside down and sleeved on the outside of the cylinder 3. A first annular flange 4 is provided on the outer periphery of the cylinder 3, and a second annular flange 5 is provided on the inner wall of the box body 25. An adjustment cavity 6 is formed between the box body 25 and the cylinder 3. An annular pressure plate 7 is slidably provided in the adjustment cavity 6. The annular pressure plate 7 is connected to the first annular flange 4 above by several springs 8. The annular pressure plate 7 is pressed against the upper surface of the second annular flange 5 under the action of the springs 8. A plurality of positioning grooves 9 are provided around the top of the base 24, and a positioning block 10 corresponding to the positioning groove 9 is provided at the bottom of the second annular flange 5.

[0026] The box 25 can rotate relative to the base 24 after being lifted, and can achieve circumferential positioning during reset by the cooperation of the positioning member with different positioning slots 9.

[0027] like Figure 3-6 As shown, several guide blocks 11 are fixed to the inner peripheral wall of the annular pressure plate 7. The outer peripheral wall of the cylinder 3 has vertical guide grooves 12 that fit the guide blocks 11. The guide blocks 11 are embedded in the guide grooves 12 and can slide up and down along them. An annular PTFE gasket 13 is fixed to the bottom of the annular pressure plate 7, and the bottom of the PTFE gasket 13 abuts against the top of the second annular flange 5. The PTFE gasket 13 acts as a lubricant between the relative sliding surfaces. PTFE material has an extremely low coefficient of friction and self-lubricating properties, which can significantly reduce the sliding friction between the two surfaces.

[0028] like Figure 2 , 4 As shown, the junction box 2 also includes a terminal block 14. The terminal block 14 has several wiring contacts 15 on its top. The terminal block 14 is fixed to the motor body 1 by bolts. The base 24 has an opening 33 that connects to the cylinder 3. The motor body has a wiring hole 34 that connects to the opening 33. The upper end of the terminal block 14 passes through the opening 33 and is located inside the box body 25. The motor body's wires pass through the wiring hole 34 and the opening 33 and are located inside the box body 25. The wires can be connected to the corresponding wiring contacts 15 of the terminal block 14 by an operator.

[0029] The junction box 25 is composed of a box body 16 and a box cover 17 connected by bolts. A circular rod 18 extending upwards is fixed to the top of the terminal block 14. This rod 18 passes through the box cover 17 and is connected to a locking nut 20 via a threaded portion 19 at its end. The locking nut 20 presses the box cover 17 onto the terminal block 14. A wiring tube 21 is provided on the side wall of the box body 16. The second annular flange 5 is fixed to the inner wall of the box body 16. In the actual assembly and manufacturing process of the junction box 2, the bottom of the cylinder 3 is first inserted into the box body 16. Due to the action of the second annular flange 5, the annular pressure plate 7 abuts against the second annular flange 5. Then, the base 24 is welded and fixed to the bottom of the cylinder 3. Finally, the box cover 17 is bolted to the top of the box body 16. The overall junction box 2 has simple component mold opening, low manufacturing cost, and simple assembly.

[0030] like Figure 3-5 As shown, the top of the base 24 is fixed with an annular sealing boss 22, and the bottom of the box body 16 is provided with an annular groove 23 for the annular sealing boss 22 to be embedded. An annular sealing ring 26 is embedded in the annular groove 23, and the annular sealing ring 26 is interference-fitted with the inner top wall and side wall of the annular groove 23.

[0031] The bottom of the positioning groove 9 is fitted with a rubber pad 27. The rubber pad 27 plays a buffering and vibration damping role when the positioning block 10 is embedded, and fills the gap, making the positioning more stable and enhancing the sealing of the junction box 2. There are four positioning grooves 9, which are evenly distributed along the circumference.

[0032] like Figure 1 , 5 As shown, it also includes two mounting feet 29 for mounting and fixing, located on the same mounting surface; The lower end of the motor body 1 is fixed with four first connecting blocks 30 arranged in a rectangular pattern, and the upper end of the motor body 1 is fixed with four second connecting blocks 31 arranged in a rectangular pattern. The bottom of the first connecting block 30 is provided with a first threaded hole 32, and the sides of the two first connecting blocks 30 and the two second connecting blocks 31 located on the same side of the motor body 1 are provided with second threaded holes 28.

[0033] The machine base 29 can be selectively connected to the first threaded holes 32 of the corresponding two first connecting blocks 30 located at the bottom of the motor body 1, or to the second threaded holes 28 of the corresponding two first connecting blocks 30 or the corresponding two second connecting blocks 31 located on the same side of the motor body 1, by means of bolts.

[0034] Two machine feet 29 can be selectively installed on the same mounting surface at the same time. There are three mounting surfaces to choose from. The first mounting surface is where the two machine feet 29 are connected to four first connecting blocks 30 located on the same side and four first threaded holes 32 provided at the bottom of the four first connecting blocks 30. The second mounting surface consists of two machine feet 29 and two first threaded holes 32 on the side of two first connecting blocks 30 located on the same side, and two second threaded holes 28 on two second connecting blocks 31 that cooperate with each other for connection. The third mounting surface is the opposite of the second mounting surface. It is also a connection between the two machine feet 29 and the two first threaded holes 32 on the side of the two first connecting blocks 30 on the working side, and the two second threaded holes 28 on the two second connecting blocks 31. By selecting different mounting planes to fix the machine feet 29, the supporting posture of the motor body 1 can be changed, thereby adjusting the orientation of the junction box 2 in space.

[0035] The specific operation method of this utility model is as follows: Junction Box 2: 25° Directional Adjustment The operator faces the motor, confirms the direction of the junction box 2 that needs adjustment, and loosens the locking nut 20 with a tool, allowing the box body 25 to move upward a sufficient distance. The operator then lifts the box body 25 upward by hand. The box body 25 causes the second annular flange 5 on its inner wall to move upward, compressing the spring 8 located in the adjustment cavity 6, and simultaneously forcing the annular pressure plate 7 to slide upward. During this process, the guide block 11 slides smoothly upward within the vertical guide groove 12, ensuring that the box body 25 rises vertically without deflection.

[0036] When the box 25 is lifted until the positioning block 10 is completely disengaged from the positioning groove 9, continue to maintain the lifting force while manually rotating the box 25 to the desired direction. The box 25 rotates relative to the annular pressure plate 7. After rotating the box 25 to the target position, align the positioning block 10 with the positioning groove 9 and slowly release the box 25. Under the restoring force of the spring 8, the annular pressure plate 7 presses down, pushing the entire box 25 downwards to reset. The positioning block 10 then precisely embeds into the corresponding positioning groove 9.

[0037] This operation is designed to quickly change the orientation of the conduit outlet of junction box 2 to accommodate the cable routing direction.

[0038] Junction Box 2 Position Adjustment: Based on the installation space requirements of the entire machine, decide which side of the motor will be used as the bottom support surface; Mounting bracket 29: Scenario 1: Install the motor body 1 with its original lower end as the base. Connect and tighten the two motor feet 29 to the first threaded holes 32 on the two corresponding first connecting blocks 30 located at the bottom of the motor body 1 using bolts.

[0039] Scenario 2: Mount the motor body 1 on one side as the bottom. Connect and tighten the two motor feet 29 to the second threaded holes 28 of the two first connecting blocks 30 and the two second connecting blocks 31 located on the same side of the motor body 1 using bolts.

[0040] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. An adjustable motor structure, comprising a motor body (1) and a junction box (2), characterized in that, The junction box (2) consists of a base (24) fixed to the motor body (1) and a box body (25) that can rotate relative to the base (24); The base (24) has a cylinder (3) fixed on top, and the box (25) is upside down and sleeved on the outside of the cylinder (3); the outer periphery of the cylinder (3) is provided with a first annular flange (4), and the inner wall of the box (25) is provided with a second annular flange (5). An adjustment cavity (6) is formed between the box (25) and the cylinder (3). An annular pressure plate (7) is slidably provided in the adjustment cavity (6). The annular pressure plate (7) is connected to the first annular flange (4) above by several springs (8). The annular pressure plate (7) is pressed against the upper surface of the second annular flange (5) under the action of the springs (8). The top of the base (24) is provided with multiple sets of positioning grooves (9), and the bottom of the second annular flange (5) is provided with a positioning block (10) corresponding to the positioning groove (9).

2. The adjustable motor structure according to claim 1, characterized in that, The inner circumferential wall of the annular pressure plate (7) is fixed with several guide blocks (11), and the outer circumferential wall of the cylinder (3) is provided with a vertical guide groove (12) that is adapted to the guide block (11). The guide block (11) is embedded in the guide groove (12) and can slide up and down along it.

3. The adjustable motor structure according to claim 1, characterized in that, The bottom of the annular pressure plate (7) is fixed with an annular PTFE gasket (13), and the bottom of the PTFE gasket (13) abuts against the top of the second annular flange (5).

4. The adjustable motor structure according to claim 1, characterized in that, The junction box (2) also includes a terminal block (14), which has several wiring contacts (15) on its top. The terminal block (14) is fixed to the motor body (1) by bolts. The base (24) has an opening (33) that connects to the inside of the cylinder (3). The motor body (1) has a wiring hole (34) that connects to the opening (33). The upper end of the terminal block (14) passes through the opening (33) and is located inside the box (25).

5. The adjustable motor structure according to claim 4, characterized in that, The box body (25) is composed of a box body (16) and a box cover (17) connected by bolts; the top of the terminal block (14) is fixed with an upwardly extending round rod (18), the upper end of which passes through the box cover (17) and is connected to a locking nut (20) located outside the box cover (17) by a threaded part (19) at its end; a terminal tube (21) is provided on the side wall of the box body (16).

6. The adjustable motor structure according to claim 5, characterized in that, The base (24) has an annular sealing boss (22) fixed on top, and the box body (16) has an annular groove (23) at the bottom for the annular sealing boss (22) to be inserted. An annular sealing ring (26) is embedded in the annular groove (23).

7. The adjustable motor structure according to claim 1, characterized in that, The bottom of the positioning groove (9) is fitted with a rubber pad (27). There are four positioning grooves (9), which are evenly distributed along the circumference.

8. The adjustable motor structure according to claim 1, characterized in that, It also includes two mounting feet (29) for mounting and fixing on the same mounting surface; The lower end of the motor body (1) is fixed with four first connecting blocks (30) arranged in a rectangular pattern, and the upper end of the motor body (1) is fixed with four second connecting blocks (31) arranged in a rectangular pattern. The bottom of the first connecting block (30) is provided with a first threaded hole (32), and the sides of the two first connecting blocks (30) and the two second connecting blocks (31) located on the same side of the motor body (1) are provided with second threaded holes (28). The machine base (29) can be selectively connected by bolts to the first threaded holes (32) of the corresponding two first connecting blocks (30) located at the bottom of the motor body (1), or to the second threaded holes (28) of the corresponding two first connecting blocks (30) or the corresponding two second connecting blocks (31) located on the same side of the motor body (1).

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