Quick replacement device for plum blossom contact spring

Abstract

The invention discloses a plum blossom contact spring quick replacement device which comprises a main supporting cylinder fixedly connected with an auxiliary cylinder. A stress application sleeve is rotatably connected to the main supporting cylinder, and the stress application sleeve is relatively rotatably connected with the first disc through a rotating bearing; a second disc and a third disc are fixedly arranged at the two ends of the auxiliary cylinder correspondingly. A plurality of first connecting rods are arranged between the first disc and the second disc, one ends of the first connecting rods are rotatably connected with the first disc, and the other ends are rotatably connected with the second disc; one end of the first connecting rod is slidably and rotatably connected with a second connecting rod, and the other end is rotatably connected with the third disc; the other end of the second connecting rod is fixedly connected with an outer hook body; by arranging the handheld stress application assembly and the two-stage connecting rod mechanism for amplifying the output torque, it is guaranteed that the enough torque is used for opening the spring ring, rapid, safe and lossless disassembly and assembly of the tulip contact spring are achieved, meanwhile, damage to a silver coating is reduced, and the maintenance cost and risk are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of maintenance of plum blossom contacts of handcarts, and in particular relates to a quick replacement device for a plum blossom contact spring. Background Art

[0002] The plum blossom contact is a commonly used conductive sliding connection component, which is installed on switch trolleys, fuse trolleys, isolation trolleys and other trolleys to achieve conductive connection between the contact arm and the static contact. During long-term operation, the plum blossom contact and its spring components may be worn or damaged. In order to ensure the safe operation of the power system, regular inspection and replacement are required.

[0003] The traditional method of disassembling and assembling the plum blossom contact spring is time-consuming and labor-intensive. The silver plating layer of the spring is easily damaged during operation, and the operation is difficult. For non-professional technicians, the operation has certain technical barriers and safety hazards, which not only affects the maintenance efficiency of the power system, but also increases maintenance costs and risks.

[0004] Therefore, in order to solve the above problems, it is necessary to develop a quick replacement device for plum blossom contact springs. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a plum blossom contact spring quick replacement device. By providing a handheld force-applying component and a two-stage connecting rod mechanism for amplifying the output torque, sufficient torque is ensured to open the spring coil, thereby achieving rapid, safe and non-destructive disassembly and assembly of the plum blossom contact spring, while reducing damage to the silver-plated layer and reducing maintenance costs and risks.

[0006] The object of the present invention is achieved as follows: A quick replacement device for a plum blossom contact spring comprises a main support cylinder, one end of the main support cylinder is provided with a folded edge portion, and an end surface of the folded edge portion away from the main support cylinder is fixedly connected to an auxiliary cylinder; Wherein, a force sleeve is rotatably connected to the main support tube via an external thread, a first disc is arranged on one side of the force sleeve, the first disc is sleeved on the main support tube, the first disc is connected with the surface clearance of the main support tube and moves back and forth along the axis direction of the main support tube, the side of the force sleeve close to the first disc is connected with the first disc for relative rotation via a rotating bearing, and the force sleeve drives the first disc to move back and forth along the axis direction of the main support tube during the rotation process; The auxiliary cylinder is respectively fixed with a second disc and a third disc at both ends; A plurality of first connecting rods are arranged between the first disk and the second disk, wherein the first connecting rods are arranged in an arc-shaped structure, one end of the first connecting rods is connected to the first disk in a sliding and rotating manner, and the other end of the first connecting rods is connected to the second disk in a rotating manner; One end of each of the first connecting rods connected to the second disc extends toward the auxiliary cylinder and is slidably and rotatably connected to a second connecting rod. The second connecting rod is arranged in a roughly Z-shaped structure. The other end of the second connecting rod is rotatably connected to the third disc. One end of each of the plurality of second connecting rods connected to the third disk extends away from the auxiliary tube and is fixedly connected with an outwardly curved hook body.

[0007] Furthermore, a force-adding handle is connected to the outer side wall of the force-adding sleeve via an expansion connecting rod.

[0008] Furthermore, the second connecting rod includes a first cross bar portion, a curved connecting portion and a second cross bar portion, one end of the first cross bar portion is connected to the first connecting rod, and the other end is fixedly connected to the curved connecting portion, one end of the second cross bar portion is fixedly connected to the curved connecting portion, and the other end is fixedly connected to the outer curved hook body, and the second cross bar portion is rotatably connected to the third disk.

[0009] Furthermore, the first crossbar portion, the curved connecting portion, the second crossbar portion and the outwardly curved hook body are arranged as an integrally formed structure.

[0010] Further, the sliding and rotating matching connection structure of the first connecting rod and the first disc is that a first strip-shaped slot is opened at one end of the first connecting rod close to the first disc, a first connecting seat is fixedly provided on the side wall of the first disc, a first pin is fixedly connected to the first connecting seat, and the first pin is inserted into the first strip-shaped slot and is slidingly and rotatingly connected to the first strip-shaped slot; The rotationally matched connection structure between the first connecting rod and the second disc is that a first circular hole is opened at one end of the first connecting rod close to the second disc, a second connecting seat is fixedly provided on the outer circumference of the second disc, a second pin shaft is fixedly connected to the second connecting seat, and the second pin shaft is inserted into the first circular hole and rotationally matched with the first circular hole.

[0011] Further, the sliding and rotating matching connection structure of the first connecting rod and the second connecting rod is that a second strip-shaped slot is provided at one end of the second connecting rod close to the first connecting rod, a third connecting seat is fixedly provided at one end of the first connecting rod corresponding to the first connecting rod, a third pin is fixedly connected to the third connecting seat, and the third pin is inserted into the second strip-shaped slot and is connected to the second strip-shaped slot in a sliding and rotating matching manner; The rotationally matched connection structure between the second connecting rod and the third disc is that a second circular hole is opened at one end of the second connecting rod close to the third disc, a fourth connecting seat is fixedly provided on the outer circumference of the third disc, a fourth pin is fixedly connected to the fourth connecting seat, and the fourth pin is inserted into the second circular hole and rotationally matched with the second circular hole.

[0012] Furthermore, the first connecting rod, the second connecting rod and the outwardly curved hook body are all provided in plurality and are evenly distributed along the circumferential direction of the first disc, the second disc and the third disc.

[0013] Furthermore, the number of each of the first connecting rod, the second connecting rod and the outwardly curved hook body is six.

[0014] Furthermore, the main support cylinder, the auxiliary cylinder, the first disc, the second disc, and the third disc are coaxially arranged.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) A plurality of outwardly bent hooks are provided to form a clamping assembly for taking and placing the spring, and the first disc is driven to move back and forth along the axis of the main support tube by the rotation of the force sleeve, and the clamping assembly is adjusted through the transmission of the connecting rod assembly. This not only allows the plum blossom contact spring to be quickly disassembled and assembled, but also has a wide range of applicability, can adapt to plum blossom contact springs of different specifications and models, and is more practical; (2) By arranging a primary torque transmission mechanism and a secondary torque transmission mechanism composed of a plurality of first connecting rods and a plurality of second connecting rods respectively outside the main support cylinder and the auxiliary cylinder, the force applied to the handheld end is amplified to achieve torque transmission, thereby ensuring that there is a sufficient force to open the spring coil, thereby effectively improving the disassembly and assembly efficiency of the plum blossom contact spring; (3) By providing a handheld booster sleeve and connecting a booster handle through an expansion connecting rod, the difficulty of operation can be reduced, the efficiency of disassembly and assembly can be improved, the disassembly and assembly time can be shortened, and the work efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main structural schematic diagram of the present invention.

[0017] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the second connecting rod in the present invention.

[0019] In the figure: 1, main support cylinder 2, auxiliary cylinder 3, force sleeve 4, first disc 5, rotating bearing 6, second disc 7, third disc 8, first connecting rod 9, second connecting rod 10, outward curved hook body; 101, folded edge portion 102, external thread; 301, expansion connecting rod 302, force adding handle; 901, first crossbar portion 902, curved connecting portion 903, second crossbar portion; a1, first strip-shaped slot b1, first connecting seat c1, first pin shaft; a2, first circular hole b2, second connecting seat c2, second pin shaft; a3, second strip slot b3, third connecting seat c3, third pin shaft; a4, second circular hole b4, fourth connecting seat c4, fourth pin shaft. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, a quick replacement device for a plum blossom contact spring comprises a main support cylinder 1, one end of the main support cylinder 1 is provided with a folded edge portion 101, and an auxiliary cylinder 2 is fixedly connected to an end face of the folded edge portion 101 away from the main support cylinder 1, wherein the main support cylinder 1 and the auxiliary cylinder 2 are used as the main support frame structure to provide stable support for the entire device and ensure the realization of the functions of each component mechanism. Preferably, a protective cover can also be provided on the outside of the entire device to provide protection for the entire device, avoid interference during the operation of each component, and extend the service life of the device. Its specific structure will not be repeated here.

[0022] Among them, the main support tube 1 is rotatably connected with a force sleeve 3 through an external thread 102, and a first disc 4 is arranged on one side of the force sleeve 3, and the first disc 4 is sleeved on the main support tube 1, and the first disc 4 is connected with the surface clearance of the main support tube 1 and moves back and forth along the axis direction of the main support tube 1. The side of the force sleeve 3 close to the first disc 4 is relatively rotatably connected with the first disc 4 through a rotating bearing 5, and the force sleeve 3 drives the first disc 4 to move back and forth along the axis direction of the main support tube 1 during rotation, and the input of external force is realized through the force sleeve 3 on the handheld side; preferably, the outer wall of the force sleeve 3 is connected with a force handle 302 through an expansion connecting rod 301 for easy operation.

[0023] Among them, the second disc 6 and the third disc 7 are fixedly provided at both ends of the auxiliary cylinder 2; preferably, the main support cylinder 1, the auxiliary cylinder, the first disc 3, the second disc 4, and the third disc 5 are coaxially arranged. At the same time, as shown in the accompanying drawings, the diameter of the auxiliary cylinder 2 is larger than the diameter of the main support cylinder 1, the diameter of the second disc 4 is larger than the diameter of the third disc 5, and the diameter of the first disc 3 is larger, so as to facilitate the realization of torque amplification function and clamping function.

[0024] Among them, a plurality of first connecting rods 8 are arranged between the first disk 4 and the second disk 6, and the plurality of first connecting rods 8 together constitute a primary lever mechanism, which is used to realize the input and amplification of the external force of the hand-held side rotating force sleeve. Specifically, the first connecting rod 8 is arranged in an arc-shaped structure, one end of the first connecting rod 8 is connected to the first disk 4 in a sliding and rotating manner, and the other end of the first connecting rod 8 is connected to the second disk 6 in a rotating manner. Compared with the secondary lever mechanism, the primary lever mechanism is smaller in size, and connects the hand-held side force component and the power end of the secondary lever mechanism to realize the primary torque transmission function.

[0025] Preferably, the sliding and rotating matching connection structure between the first connecting rod 8 and the first disk 4 is that a first strip slot a1 is opened at one end of the first connecting rod 8 close to the first disk 4, and the first strip slot a1 is adapted to the arc structure of the first connecting rod 8, that is, the first strip slot a1 is an arc-shaped through slot structure adapted to the arc of the first connecting rod 8, and a first connecting seat b1 is fixedly provided on the side wall of the first disk 4, and a first pin shaft c1 is fixedly connected to the first connecting seat b1, and the first pin shaft c1 is inserted into the first strip slot a1 and is slidingly and rotatingly matched with the first strip slot a1.

[0026] Preferably, the rotationally fitting connection structure between the first connecting rod 8 and the second disc 6 is that a first circular hole a2 is provided at one end of the first connecting rod 8 close to the second disc 6, a second connecting seat b2 is fixedly provided on the outer circumference of the second disc 6, a second pin shaft c2 is fixedly connected to the second connecting seat b2, and the second pin shaft c2 is inserted into the first circular hole a2 and rotationally fitted with the first circular hole a2.

[0027] Among them, one end of the multiple first connecting rods 8 connected to the second disk 6 extends toward the auxiliary cylinder 2 and is slidably and rotatably connected with the second connecting rod 9. The multiple second connecting rods 9 together constitute a secondary lever mechanism, which is used to realize the secondary amplification of the input external force after the primary torque amplification by the primary lever mechanism. The second connecting rod 9 is arranged in a roughly Z-shaped structure, and the other end of the second connecting rod 9 is rotatably connected with the third disk 7. Compared with the primary lever mechanism, the secondary lever mechanism is larger in size, connecting the output end of the primary lever mechanism and the power end of the clamping mechanism composed of multiple outwardly bent hooks 10, to realize the secondary torque transmission function.

[0028] Preferably, the second connecting rod 9 includes a first cross bar portion 901, an arc connecting portion 902 and a second cross bar portion 903, one end of the first cross bar portion 901 is connected to the first connecting rod 8, and the other end is fixedly connected to the arc connecting portion 902, one end of the second cross bar is fixedly connected to the arc connecting portion 902, and the other end is fixedly connected to the outwardly curved hook body 10, and the second cross bar portion 903 is rotatably connected to the third disk 7; preferably, the first cross bar portion 901, the arc connecting portion 902, the second cross bar portion 903 and the outwardly curved hook body 10 are arranged as an integrally formed structure.

[0029] Preferably, the sliding and rotating matching connection structure between the first connecting rod 8 and the second connecting rod 9 is that a second strip slot a3 is opened at one end of the second connecting rod 9 close to the first connecting rod 8, and the second strip slot a3 is adaptively arranged with the first cross bar portion 901 of the second connecting rod 9, that is, the second strip slot a3 is a straight through slot structure adapted to the first cross bar portion 901, and a third connecting seat b3 is fixedly arranged at the corresponding end of the first connecting rod 8, and a third pin shaft c3 is fixedly connected to the third connecting seat b3, and the third pin shaft c3 is inserted into the second strip slot a3 and is slidingly and rotatingly matched with the second strip slot a3.

[0030] Preferably, the rotationally fitting connection structure between the second connecting rod 9 and the third disc 7 is that a second circular hole a4 is opened at one end of the second connecting rod 9 close to the third disc 7, a fourth connecting seat b4 is fixedly provided on the outer circumference of the third disc 7, a fourth pin shaft c4 is fixedly connected to the fourth connecting seat b4, and the fourth pin shaft c4 is inserted into the second circular hole a4 and rotationally fitted with the second circular hole a4.

[0031] Among them, one end of a plurality of the second connecting rods 9 connected to the third disc 7 extends away from the auxiliary tube 2 and is fixedly connected with an outwardly curved hook body 10, and the plurality of the outwardly curved hook bodies 10 together constitute a clamping mechanism for taking and placing the spring.

[0032] Preferably, the first connecting rod 8, the second connecting rod 9 and the outward curved hook body 10 are each provided in plurality and are evenly distributed along the circumferential direction of the first disc 4, the second disc 6 and the third disc 7. Correspondingly, the component hole structures, connecting seats and pin shaft structures respectively connected to the first disc 4, the second disc 6 and the third disc 7 are also provided in plurality and are evenly distributed along the circumferential direction of the first disc 4, the second disc 6 and the third disc 7; Preferably, the first connecting rod 8, the second connecting rod 9 and the outward curved hook body 10 are each provided in six numbers. Correspondingly, the component hole structures, connecting seats and pin shaft structures respectively connected to the first disc 4, the second disc 6 and the third disc 7 are also provided in six numbers.

[0033] In the present invention, an external force input is realized by providing a force sleeve assembly on the hand-held side, and a two-stage connecting rod mechanism is provided to amplify the output torque, so as to achieve a smaller input force while ensuring that there is sufficient torque to open the spring coil. At the same time, the first disk is driven to move back and forth along the axis of the main support tube by the rotation of the force sleeve, and the adjustment of the clamping assembly for taking and placing the spring composed of the external bent hook body is realized through the transmission of the connecting rod assembly. Not only can the disassembly and assembly of the plum blossom contact spring be realized quickly, but it also has a wide range of applicability and can adapt to plum blossom contact springs of different specifications and models, so it is more practical.

[0034] After being put into use, the plum blossom contact spring quick replacement device in the present invention has achieved remarkable economic benefits in the maintenance of power systems. After using the device, the average time for replacing the plum blossom contact spring is shortened from the original 30 minutes to 12 minutes, that is, the time is shortened by 60%, which means that in a busy power system, power supply can be restored faster, reducing production losses caused by power outages and ensuring the stable operation of the power system; in addition, because the device provides a more accurate and compatible replacement process, equipment damage and maintenance costs are reduced by about 35%, which not only saves a lot of maintenance costs for the enterprise, but also improves the reliability and service life of the equipment; more importantly, the device reduces operational risks through optimized design and humanized operation. According to statistics, after using the quick replacement device, the accident rate is reduced by 25%, which further ensures the safety of operators and reduces potential losses caused by safety accidents.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the specific implementation modes of the present invention can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A quick replacement device for plum blossom contact spring, characterized in that: It comprises a main support tube (1), one end of the main support tube (1) is provided with a folded edge portion (101), and an end surface of the folded edge portion (101) away from the main support tube (1) is fixedly connected to an auxiliary tube (2); The main support tube (1) is rotatably connected to a force sleeve (3) via an external thread (102); a first disc (4) is provided on one side of the force sleeve (3); the first disc (4) is sleeved on the main support tube (1); the first disc (4) is connected to the surface of the main support tube (1) with clearance fit and moves back and forth along the axis of the main support tube (1); a side of the force sleeve (3) close to the first disc (4) is connected to the first disc (4) for relative rotation via a rotating bearing (5); and the force sleeve (3) drives the first disc (4) to move back and forth along the axis of the main support tube (1) during rotation; A second disc (6) and a third disc (7) are respectively fixedly disposed on both ends of the auxiliary cylinder (2); A plurality of first connecting rods (8) are arranged between the first disk (4) and the second disk (6); the first connecting rods (8) are arranged in an arc-shaped structure; one end of the first connecting rod (8) is connected to the first disk (4) in a sliding and rotatable manner, and the other end of the first connecting rod (8) is connected to the second disk (6) in a rotatable manner; One end of each of the plurality of first connecting rods (8) connected to the second disk (6) extends in the direction of the auxiliary cylinder (2) and is slidably and rotatably connected to a second connecting rod (9), the second connecting rod (9) being arranged in a roughly Z-shaped structure, and the other end of the second connecting rod (9) being rotatably connected to the third disk (7); One end of each of the plurality of second connecting rods (9) connected to the third disc (7) extends in a direction away from the auxiliary cylinder (2) and is fixedly connected to an outwardly curved hook body (10).

2. A plum blossom contact spring quick replacement device according to claim 1, characterized in that: The outer side wall of the force sleeve (3) is connected to a force handle (302) via an expansion connecting rod (301).

3. The quick replacement device for plum blossom contact spring according to claim 1, characterized in that: The second connecting rod (9) comprises a first cross bar portion (901), a curved connecting portion (902) and a second cross bar portion (903); one end of the first cross bar portion (901) is connected to the first connecting rod (8), and the other end is fixedly connected to the curved connecting portion (902); one end of the second cross bar is fixedly connected to the curved connecting portion (902), and the other end is fixedly connected to the outer curved hook body (10); and the second cross bar portion (903) is rotatably connected to the third disk (7).

4. A plum blossom contact spring quick replacement device according to claim 3, characterized in that: The first crossbar portion (901), the curved connecting portion (902), the second crossbar portion (903) and the outwardly curved hook body (10) are arranged as an integrally formed structure.

5. The quick replacement device for plum blossom contact spring according to claim 1, characterized in that: The sliding and rotating matching connection structure of the first connecting rod (8) and the first disk (4) is as follows: a first strip-shaped slot (a1) is provided at one end of the first connecting rod (8) close to the first disk (4); a first connecting seat (b1) is fixedly provided on the side wall of the first disk (4); a first pin shaft (c1) is fixedly connected to the first connecting seat (b1); the first pin shaft (c1) is inserted into the first strip-shaped slot (a1) and is connected to the first strip-shaped slot (a1) in a sliding and rotating matching manner; The rotationally matched connection structure of the first connecting rod (8) and the second disk (6) is as follows: a first circular hole (a2) is provided at one end of the first connecting rod (8) close to the second disk (6); a second connecting seat (b2) is fixedly provided on the outer circumference of the second disk (6); a second pin shaft (c2) is fixedly connected to the second connecting seat (b2); and the second pin shaft (c2) is inserted into the first circular hole (a2) and rotationally matched with the first circular hole (a2).

6. The plum blossom contact spring quick replacement device according to claim 1, characterized in that: The sliding and rotating matching connection structure of the first connecting rod (8) and the second connecting rod (9) is as follows: a second strip-shaped slot (a3) ​​is provided at one end of the second connecting rod (9) close to the first connecting rod (8); a third connecting seat (b3) is fixedly provided at the corresponding end of the first connecting rod (8); a third pin shaft (c3) is fixedly connected to the third connecting seat (b3); the third pin shaft (c3) is inserted into the second strip-shaped slot (a3) ​​and is connected to the second strip-shaped slot (a3) ​​in a sliding and rotating matching manner; The rotationally matched connection structure of the second connecting rod (9) and the third disk (7) is as follows: a second circular hole (a4) is provided at one end of the second connecting rod (9) close to the third disk (7); a fourth connecting seat (b4) is fixedly provided on the outer circumference of the third disk (7); a fourth pin shaft (c4) is fixedly connected to the fourth connecting seat (b4); and the fourth pin shaft (c4) is inserted into the second circular hole (a4) and rotationally matched with the second circular hole (a4).

7. The plum blossom contact spring quick replacement device according to claim 1, characterized in that: The first connecting rod (8), the second connecting rod (9) and the outer curved hook body (10) are all arranged in plurality and are evenly distributed along the circumferential direction of the first circular disc (4), the second circular disc (6) and the third circular disc (7).

8. The plum blossom contact spring quick replacement device according to claim 7, characterized in that: The number of each of the first connecting rod (8), the second connecting rod (9) and the outwardly curved hook body (10) is six.

9. The plum blossom contact spring quick replacement device according to claim 1, characterized in that: The main support cylinder (1), the auxiliary cylinder (2), the first disc (4), the second disc (6), and the third disc (7) are coaxially arranged.

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