Tool for assembling auxiliary clamping plate

Abstract

The utility model discloses a tool for assembling an auxiliary clamping plate. The tool comprises a clamping mechanism and a positioning mechanism. The clamping mechanism comprises a disc and a positioning pin; the middle of the disc is concave inwards to form a groove, and a plurality of pin holes corresponding to threaded holes of clamping plate parts are formed in the side wall of the groove. The positioning pin is arranged in the groove of the disc; the end part of the positioning pin penetrates through the pin hole and is in threaded connection with the threaded hole of the clamping plate part; the positioning mechanism comprises a round bar and a positioning bolt; the end part of the round bar is fixedly connected with the disc, and a plurality of positioning holes which are transversely distributed at intervals are formed in the round bar; the head of the positioning pin is inserted into the positioning hole, and the tail is inserted into the blind hole at the end of the insulating main shaft. According to the tool for auxiliary assembly, manual visual alignment of clamping plate part mounting holes is not needed, assembly of clamping plate parts can be completed by a single person, use is convenient, operation is easy, assembly efficiency is greatly improved, and assembly quality is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of on-load tap changers, and in particular relates to a tool for assembling auxiliary clamping plates. Background Art

[0002] The clamping plate, used in ZV-type on-load tap-changers, features threaded holes for bolt connections. During assembly, the bracket, equipped with contacts and resistors, is first bolted to the outside of the insulating main shaft. The clamping plate is then inserted into the insulating main shaft and bolted through the through-holes of the insulating main shaft from the outside of the bracket to secure the clamping plate together. This assembly method represents a new design improvement, positioning and clamping the clamping plate within the hollow insulating main shaft to allow bolts to be connected from the outside. However, during assembly, the clamping plate is tied to a long rod and inserted into the inner hole of the insulating main shaft. Alignment of the clamping plate's threaded holes with those of the outer bracket is achieved manually, with visual inspection required before bolts are used to connect the clamping plate from the outside. This assembly method, which relies solely on manual alignment and positioning, is inconvenient and difficult to ensure clamping quality, resulting in low assembly efficiency and high labor intensity. Utility Model Content

[0003] In order to solve the above-mentioned defects, the present invention aims to provide a tool for assisting the assembly of splints. The tool is equipped with a clamping mechanism and a positioning mechanism, which can position and clamp the splint parts, thereby reducing the assembly difficulty and saving a certain amount of assembly time.

[0004] In order to achieve the above technical objectives, the following technical solutions are adopted:

[0005] A tool for assisting splint assembly, comprising a clamping mechanism and a positioning mechanism; the clamping mechanism comprises a disc and a positioning pin; the middle portion of the disc is concave to form a groove, and a plurality of pin holes corresponding to the threaded holes of the splint parts are provided on the side walls of the groove; the positioning pin is arranged in the groove of the disc, and the end of the positioning pin passes through the pin hole and is threadedly connected to the threaded hole of the splint part; the positioning mechanism comprises a round rod and a positioning pin; the end of the round rod is fixedly connected to the disc, and a plurality of positioning holes distributed laterally at intervals are provided on the round rod; the head of the positioning pin is inserted into the positioning hole, and the tail of the positioning pin is inserted into the blind hole at the end of the insulating main shaft.

[0006] Furthermore, the disc is provided with a notch connected to the pin hole, and a spring and a steel ball are placed in the notch, wherein the steel ball is located on the side close to the pin hole and can enter the pin hole to lock the positioning pin; the spring and steel ball are used to fix the positioning pin to prevent it from falling off.

[0007] Furthermore, a recess is provided on the positioning pin; the spring in the notch is subjected to a pressing force from the outside to act on the steel ball to push the steel ball into the recess, thereby clamping the positioning pin.

[0008] Furthermore, a pressing plate is provided at the center of the groove of the disc, and the pressing plate presses the disc and is fixedly connected to the round rod via screws.

[0009] Furthermore, two symmetrically distributed spring legs are provided on the side of the disc away from the pin hole; the spring legs are composed of a hexagon socket screw and a spring mounted on the screw; the spring legs pass through the disc from the outside and are fixed on the inside of the disc with a nut.

[0010] Furthermore, an annular groove is provided on the other end surface of the disc facing away from the groove, so as to reduce the weight of the clamping mechanism.

[0011] Furthermore, the notch is a through hole arranged on one side of the annular groove; a screw is provided on the outside of the notch to compress the spring and the steel ball.

[0012] Furthermore, the positioning pins are spring-mounted and there are two of them.

[0013] Furthermore, the round rod is made of aluminum.

[0014] The beneficial effects achieved by the utility model are:

[0015] The auxiliary splint assembly tool of the present invention is fixed to the splint part by a clamping mechanism, and then the positioning mechanism is fixed to the insulating main shaft by a positioning pin so that the threaded hole of the splint part is aligned with the through hole on the insulating main shaft. At this time, the bolt can be directly passed through the through hole on the main shaft and the threaded hole of the splint part from the outside of the insulating main shaft to achieve a fixed connection, without the need for manual visual inspection and repeated adjustment and alignment. After the splint part is connected with the bolt, the positioning pin of the clamping mechanism automatically withdraws backward under the action of the bolt, canceling the fixing effect of the tool and the splint part, making it convenient for the tool to be withdrawn for the next operation. The auxiliary tool has a simple structure, is easy to operate, and is light in overall weight, and can be operated by one person. It saves manpower and assembly time, reduces the difficulty of assembling the splint parts, and at the same time, the tool is reliable and accurate in positioning, which greatly facilitates the assembly operation of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described below with reference to the accompanying drawings.

[0017] Attachment Figure 1 This is a cross-sectional view of a tool for auxiliary splint assembly of the utility model.

[0018] Attachment Figure 2 It is attached Figure 1 A side view of a tool for assisting splint assembly.

[0019] Attachment Figure 3 The utility model is a schematic diagram of an assembly tool for auxiliary splint assembly.

[0020] Attachment Figure 4 It is a schematic diagram of the assembly structure of the splint parts of the utility model.

[0021] In the figure: 1. Clamping mechanism; 2. Positioning mechanism; 3. Pressure plate; 4. Clamping parts; 5. Insulated spindle; 11. Disc; 12. Positioning pin; 13. Spring; 14. Steel ball; 15. Spring foot; 16. Annular groove; 1a. Pin hole; 1b. Notch; 21. Round rod; 22. Positioning pin; 2a. Positioning hole; 5a. Blind hole. DETAILED DESCRIPTION

[0022] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The embodiments described are merely a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0023] like Figure 1-2 As shown, the utility model is a tool for auxiliary splint assembly, which includes a clamping mechanism 1 and a positioning mechanism 2.

[0024] The clamping mechanism 1 includes a concave disc 11, a positioning pin 12, a spring 13 and a steel ball 14; the disc 11 is concave in the middle to form a groove, and a plurality of pin holes 1a corresponding to the threaded holes of the splint part 4 are provided on the side wall of the groove; the positioning pin 12 is set in the groove of the disc 11, and the end of the positioning pin 12 passes through the pin hole 1a and is threadedly connected to the threaded hole of the splint part 4 to achieve the fixation of the tooling and the splint part 4. The positioning pin 12 is sheathed with a spring to provide the positioning pin 12 with a restoring force for the up and down movement; the disc 11 is facing away from the groove. The other end face is provided with an annular groove 16 for reducing the weight of the clamping mechanism; the disc 11 is provided with a notch 1b connected to the pin hole 1a, and the notch 1b is a through hole located on one side of the annular groove 16; a spring 13 and a steel ball 14 are placed in the notch 1b, wherein the steel ball 14 is located on the side close to the pin hole 1a and can enter the pin hole 1a, and the spring 13 and the steel ball 14 are pushed toward the locating pin 12 by the tightening force of the outer screw, so that the steel ball 14 enters the recess 121 provided on the locating pin 12 to prevent the locating pin 12 from falling off.

[0025] The positioning mechanism 2 includes a round rod 21 and a positioning pin 22; the round rod 21 is provided with a plurality of positioning holes 2a distributed laterally at intervals and is an aluminum rod to reduce weight; the head of the positioning pin 22 is fixed in the positioning hole 2a, and the tail is fixed in the blind hole 5a at the end of the insulating main shaft 5.

[0026] A pressure plate 3 is provided in the center of the groove of the disc 11, and the pressure plate 3 presses the disc 11. The pressure plate 3, the disc 11 and the round rod 21 are fixedly connected by screws on the outside of the pressure plate 3, so that the clamping mechanism 1 and the positioning mechanism 2 are fixed as one; the disc 11 is provided with two symmetrically distributed spring legs 15 on the side away from the pin hole 1a, and the spring legs 15 are composed of a hexagon socket screw and a spring mounted on the screw. The spring legs 15 pass through the disc 11 and are fixed with nuts on the inside of the disc 11 to adapt to the apertures of insulating spindles 5 of different sizes and reduce the shaking of the tooling.

[0027] The working principle of this utility model is:

[0028] like Figure 3 As shown, the clamping mechanism 1 is used to fix the splint part 4 on the tooling to prevent the splint part 4 from falling off or moving, and the fixing effect can be canceled after the bolts are connected to the splint, which facilitates the withdrawal of the tooling for the next operation. The positioning mechanism 2 is used to position the splint part 4 to the required installation position according to the different lengths of the insulating main shaft 5 of different models, so that the threaded hole of the splint part 4 and the through hole of the insulating main shaft 5 are aligned. There are positioning holes 2a at different positions on the round rod 21. According to the required installation height, a suitable positioning hole 2a is selected to insert the positioning pin 22 into the blind hole 5a at the end of the insulating main shaft 5 and the positioning hole 2a on the round rod 21, so that the threaded hole of the splint part 4 and the through hole of the insulating main shaft 5 can be aligned.

[0029] When using, proceed in three steps:

[0030] Step 1: First, fix the splint part 4 on the clamping mechanism 1 of the tooling, align the threaded hole of the splint part 4 with the pin hole 1a on the clamping mechanism disc 11, then push the locating pin 12 at the pin hole 1a so that the tail of the locating pin 12 falls into the threaded hole of the splint part 4, and then press the spring 13 and steel ball 14 in the notch 1b so that the steel ball 14 enters the recess 121 on the locating pin 12 to clamp the locating pin 12 and lock it to prevent the locating pin 12 from withdrawing.

[0031] Step 2: Insert the tooling that fixes the splint part 4 into the hole of the insulating main shaft 5. According to the model of the insulating main shaft 5 and the height of the required installation position, select the appropriate positioning hole 2a on the round rod 21 of the tooling positioning mechanism to align with the blind hole 5a at the end of the insulating main shaft 5. Insert the head of the positioning pin 22 into the positioning hole 2a and fix the tail in the blind hole 5a to achieve alignment between the threaded hole of the splint part 4 and the through hole of the insulating main shaft 5.

[0032] Step 3: After the threaded holes of the clamping plate 4 are aligned, install and tighten the bolts on the outside of the insulating spindle 5 to secure the clamping plate 4 to the insulating spindle 5. Under the pressure of the bolts, the positioning pins 12 on the disc 11 retreat into the disc 11, and the clamping mechanism 1 loses its grip on the clamping plate 4. At this time, the positioning pins 22 on the positioning mechanism 2 can be removed, and the entire tool can be removed from the insulating spindle 5 for the next assembly operation.

[0033] The auxiliary tooling of the utility model is light in weight and easy to operate, can adapt to the installation of insulating main shafts of different models, has universality and can meet assembly requirements.

[0034] Other aspects of the present invention that are not described in detail are all conventional technologies known to those skilled in the art.

[0035] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or apparatus.

[0036] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A tool for assisting the assembly of splints, characterized by: The invention comprises a clamping mechanism (1) and a positioning mechanism (2); the clamping mechanism (1) comprises a disc (11) and a positioning pin (12); the disc (11) is concave in the middle to form a groove, and a plurality of pin holes (1a) corresponding to the threaded holes of the splint part (4) are provided on the side wall of the groove; the positioning pin (12) is arranged in the groove of the disc (11), and the end of the positioning pin (12) passes through the pin hole (1a) and is threadedly connected to the threaded hole of the splint part (4); the positioning mechanism (2) comprises a round rod (21) and a positioning pin (22); the end of the round rod (21) is fixedly connected to the disc (11), and a plurality of positioning holes (2a) distributed laterally at intervals are provided on the round rod (21); the head of the positioning pin (22) is inserted into the positioning hole (2a), and the tail of the positioning pin (22) is inserted into the blind hole (5a) at the end of the insulating main shaft (5).

2. The auxiliary splint assembly tool according to claim 1, characterized in that: The disc (11) is provided with a notch (1b) communicating with the pin hole (1a), and a spring (13) and a steel ball (14) are placed in the notch (1b), wherein the steel ball (14) is located on a side close to the pin hole (1a) and can enter the pin hole (1a) to lock the positioning pin (12); the spring (13) and the steel ball (14) are used to fix the positioning pin (12) to prevent it from falling off.

3. The auxiliary splint assembly tool according to claim 2, characterized in that: The positioning pin (12) is provided with a recess (121); the spring (13) in the notch (1b) is subjected to a pressing force from the outside and acts on the steel ball (14) to push the steel ball (14) into the recess (121) to clamp the positioning pin (12).

4. The auxiliary splint assembly tool according to claim 3, characterized in that: A pressing plate (3) is provided at the center of the groove of the disc (11), and the pressing plate (3) presses the disc (11) and is fixedly connected to the round rod (21) via screws.

5. The auxiliary splint assembly tool according to claim 4, characterized in that: Two symmetrically distributed spring legs (15) are provided on the side of the disk (11) away from the pin hole (1a); the spring legs (15) are composed of a hexagon socket screw and a spring sleeved on the screw; the spring legs (15) pass through the disk (11) from the outside and are fixed on the inside of the disk (11) with a nut.

6. The auxiliary splint assembly tool according to claim 5, characterized in that: The other end surface of the disc (11) facing away from the groove is provided with an annular groove (16) for reducing the weight of the clamping mechanism.

7. The auxiliary splint assembly tool according to claim 6, characterized in that: The notch (1b) is a through hole provided on one side of the annular groove (16); a screw is provided on the outside of the notch (1b) for compressing the spring (13) and the steel ball (14).

8. The auxiliary splint assembly tool according to claim 7, characterized in that: The positioning pins (12) are mounted with springs and are two in number.

9. A tool for auxiliary splint assembly according to any one of claims 1 to 8, characterized in that: The round rod (21) is made of aluminum.

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