Coupling auxiliary assembly device
By using an auxiliary assembly device for couplings, LED lights guide the bolt tightening sequence and determine the torque, solving the problems of incorrect bolt tightening sequence and large workload in coupling assembly, thus improving assembly efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LONGTIE ZONGHENG RAIL TRANSIT MAINTENANCE TECH CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-07
AI Technical Summary
When assembling the couplings in the temporary repair depot, there are many bolts and the tightening sequence is easy to get confused. It requires the cooperation of many people and the workload is large. In addition, the operation is inconvenient due to limited space and the existing tools are complicated to use.
Design a coupling auxiliary assembly device, which consists of multiple chain links forming a closed loop structure. LED lights are installed on the outer edge. Bolts are fixed by a locking buckle. The LED lights guide the tightening sequence, and the communication module controls the lights to indicate the next bolt, helping to determine whether the torque is qualified.
It prevents bolts from rotating, automatically prompts the tightening sequence, reduces errors caused by manual memorization, simplifies the operation process, and improves assembly efficiency and accuracy.
Smart Images

Figure CN224464101U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rail transit technology, specifically to an auxiliary assembly device for couplings, which is used, especially, in the assembly of EMU couplings in temporary repair workshops. Background Technology
[0002] When assembling couplings in the temporary repair depot, the maintenance process requires that the coupling bolts be tightened in a specific sequence (e.g., Figure 8 As shown, tighten the bolts in the order of 1b, 2b, 3b, 4b, 5b, 6b, 7b, 8b, 9b, 10b, 11b, 12b. The tightening process needs to be photographed and video recorded; tightening in the wrong order is not recommended. Because there are many bolts, it's easy to forget the order when tightening. Currently, workers place a diagram with the order marked on one side of the coupling and then tighten each bolt one by one. Furthermore, the bolts are pre-tightened and then fully tightened, with each bolt being tightened twice, resulting in a significant workload. Additionally, since the assembly uses bolts and nuts, both open-end wrenches and ratchet wrenches are required for tightening.
[0003] Current application and technological status:
[0004] (1) The operation of the coupling requires two people to work together. Due to the limited space under the vehicle, it is inconvenient for the operators to work together.
[0005] (2) There are many bolts, and the tightening sequence is easily confused;
[0006] (3) When tightening the bolts, the wrench needs to be turned as well, and the workload is large when two wrenches are used together. Utility Model Content
[0007] Therefore, this utility model provides an auxiliary assembly device for couplings to solve the above-mentioned problems in the prior art. To achieve the above objective, this utility model provides the following technical solution: According to a first aspect of this utility model, an auxiliary assembly device for couplings is provided. This device consists of a closed ring structure formed by sequentially hinged chain links and fastening their heads and tails together with locking buckles. Each chain link has a lamp holder for mounting LED lights on its outer edge, and each chain link has a notch on its inner edge. The shape of this notch matches the head of an external hexagonal bolt, thereby achieving the fixing of the external hexagonal bolt.
[0008] Furthermore, the hinge between adjacent links is achieved through pin holes opened on the links and pins inserted into the pin holes.
[0009] Furthermore, the head link has an elongated locking groove at its head; the tail link has a slotted edge at its tail end to form a locking opening, and the locking groove and the locking opening are fastened together by a locking buckle.
[0010] Furthermore, the locking connector includes a locking handle and a rotating shaft passing through the locking handle. The middle part of the rotating shaft is provided with a locking protrusion that can be rotatably engaged with the locking opening. The free end of the rotating shaft passes through the locking groove and is provided with a shaft head, which is used to axially limit the rotating shaft.
[0011] Furthermore, the locking connector also includes a torsion spring sleeved on the pivot and located between the locking handle and the outer side of the head link, the torsion spring being used to reset the locking handle.
[0012] Furthermore, the locking connector also includes a sleeve fitted around the outer periphery of the shaft, the sleeve being located inside the torsion spring.
[0013] Furthermore, each link is provided with a weight-reducing hole.
[0014] Furthermore, the weight-reducing hole is a triangular hole.
[0015] Furthermore, one of the chain links has a main line fixing piece on its side that connects in series with multiple LED lights.
[0016] Furthermore, it also includes a handheld device and a communication module connected to the handheld device. The communication module is used to control the LED lights to light up in sequence, and the communication module receives signals from the handheld device to control the LED lights to turn off.
[0017] This utility model has the following advantages: Through the coupling auxiliary assembly device of this utility model, by installing the device at the coupling bolt position, the anti-rotation structural surface clamps the bolt head to achieve the purpose of preventing rotation; the LED lights are pre-set in sequence, automatically indicating the next bolt after tightening one bolt; the tightening sequence of the coupling bolts (which can be preset) is guided by lights; it assists in judging whether the tightening torque of the coupling bolts is qualified; it records the tightening sequence and torque of the coupling bolts; and it prevents the bolts from rotating during the coupling tightening process. Attached Figure Description
[0018] Figure 1 This is an unfolded structural diagram of a coupling auxiliary assembly device provided for some embodiments of the present utility model.
[0019] Figure 2 This is a structural diagram of an intermediate connecting component of an auxiliary assembly device for a coupling provided in some embodiments of the present invention.
[0020] Figure 3 This is a structural diagram of the end connector A of an auxiliary assembly device for a coupling provided in some embodiments of the present invention.
[0021] Figure 4 This is a structural diagram of the end connector B of an auxiliary assembly device for a coupling provided in some embodiments of the present invention.
[0022] Figure 5 This is a partial structural diagram of a coupling auxiliary assembly device provided for some embodiments of the present invention.
[0023] Figure 6 This is a partial exploded view of an auxiliary assembly device for couplings provided in some embodiments of the present invention.
[0024] Figure 7 This is a partial exploded view of an auxiliary assembly device for couplings provided in some embodiments of the present invention.
[0025] Figure 8 This is a schematic diagram illustrating the working principle of existing technology.
[0026] In the diagram, 1. Chain link, 2. Pin, 3. Lamp holder, 4. LED light, 5. Locking handle, 6. Head chain link, 7. Tail chain link, 8. Main line fixing component, 10. Pin hole, 11. LED lamp holder mounting surface, 12. Notch, 13. Weight reduction hole, 14. Hook-on locking opening, 15. Locking groove, 16. Locking protrusion, 17. Shaft head, 18. Torsion spring, 20. Sleeve, 21. Shaft, a. Locking assembly. Detailed Implementation
[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0028] Example 1
[0029] like Figures 1 to 7 As shown in the first aspect embodiment of the present invention, a coupling auxiliary assembly device is provided. The device consists of a closed ring structure formed by a series of chain links 1 being hinged together and their heads and tails fastened together by a locking buckle a. Each chain link 1 has a lamp holder 3 for mounting an LED light 4 on its outer edge. The inner edge of each chain link 1 has a notch 12, the shape of which matches the nut of the external hexagonal bolt, thereby achieving the fixing of the external hexagonal bolt.
[0030] In the above embodiments, it should be noted that when in use, the notch 12 fits with the external hexagonal bolt, and after fastening, it can effectively prevent the bolt from rotating. The main mechanical structure of the device consists of 12 connecting parts connected by pins to form a ring, which can be opened or closed to form a ring. It is the main anti-torque structure for preventing the bolt from rotating and also serves as the fixed carrier for the indicator light. Each link 1 has an LED lamp holder mounting surface 11 on its outer edge for mounting the lamp holder 3.
[0031] The technical effects achieved by the above embodiments are as follows: Through the coupling auxiliary assembly device of this embodiment, by installing the device at the coupling bolt position, the anti-rotation structural surface clamps the bolt head to achieve the purpose of preventing rotation. The LED lights are pre-set in sequence; after tightening one bolt, the next bolt is automatically indicated. The tightening sequence of the coupling bolts can be preset for light guidance. It assists in judging whether the tightening torque of the coupling bolts is qualified. It records the tightening sequence and torque of the coupling bolts. It prevents the bolts from rotating during the coupling tightening process.
[0032] Example 2
[0033] like Figures 1 to 7 As shown, a coupling auxiliary assembly device includes all the contents of Embodiment 1. In addition, the hinge between adjacent links 1 is achieved by the pin hole 10 opened on the link 1 and the pin 2 inserted into the pin hole 10.
[0034] Optionally, the head link 6 has an elongated locking groove 15 at its head; the tail link 7 has a slotted edge at its tail end to form a hook-and-lock opening 14, and the locking groove 15 and the hook-and-lock opening 14 are fastened together by a locking buckle a.
[0035] The technical effects achieved by the above embodiments are as follows: the head link 6 is given a locking groove 15, which makes it convenient for the shaft of the locking handle 5 to move along the locking groove 15, so that the pin on the locking handle 5 can be smoothly engaged in the opening; the tail link 7 is given a hook-locking opening 14, which allows the shaft of the locking handle 5 to be engaged in the opening for locking.
[0036] Example 3
[0037] like Figures 1 to 7 As shown, a coupling auxiliary assembly device includes all the contents of Embodiment 2. In addition, the locking connection buckle a includes a locking handle 5 and a rotating shaft 21 passing through the locking handle 5. The middle part of the rotating shaft 21 is provided with a locking protrusion 16 that can be rotatably engaged with the hook-locking opening 14. The free end of the rotating shaft 21 passes through the locking slide groove 15 and is provided with a shaft head 17, which is used to axially limit the rotating shaft 21.
[0038] Optionally, the locking connector a also includes a torsion spring 18 sleeved on the rotating shaft 21 and located between the locking handle 5 and the outer side of the head link 6. The torsion spring 18 is used to reset the locking handle 5.
[0039] Optionally, the locking buckle a also includes a sleeve 20 sleeved on the outer periphery of the rotating shaft 21, the sleeve 20 being located inside the torsion spring 18.
[0040] The technical effect achieved by the above embodiment is that the head link 6 and the tail link 7 are in an open state after connection, and can be quickly locked by locking handle 5. This makes it convenient for the tooling to be opened and fitted onto the coupling bolts.
[0041] Example 4
[0042] like Figures 1 to 7 As shown, a coupling auxiliary assembly device includes all the contents of Embodiment 3, except that each link 1 is provided with a weight reduction hole 13.
[0043] Optionally, the weight reduction hole 13 is a triangular hole.
[0044] The technical effect achieved by the above embodiment is that the weight reduction hole 13 can effectively reduce the weight of the tooling.
[0045] Example 5
[0046] like Figures 1 to 7 As shown, a coupling auxiliary assembly device includes all the contents of Embodiment 4, except that a main line fixing member 8 connected in series with multiple LED lights 4 is provided on the side of one of the links 1.
[0047] Optionally, it also includes a handheld device and a communication module connected to the handheld device. The communication module is used to control the LED lights 4 to light up in sequence, and the communication module receives signals from the handheld device to control the LED lights 4 to turn off.
[0048] The technical effects achieved by the above embodiments are as follows: the communication module is a converter module for communication between the handheld device and the tooling; the handheld device is a data recording, intelligent torque wrench, and tooling communication converter module.
[0049] In the description of this utility model, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
[0054] In the description of this specification, the references to terms such as "Embodiment 1," "Embodiment 2," "Example," "Specific Example," or "Some Examples," etc., indicate that the specific method, apparatus, or feature described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, methods, apparatus, or features described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0055] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A coupling auxiliary assembly device, characterized in that, The device consists of a closed ring structure formed by hinged links (1) in sequence and fastened together by locking buckles (a). Each link (1) has a lamp holder (3) for mounting LED lights (4) on its outer edge. Each link (1) has an opening (12) on its inner edge. The shape of the opening (12) matches the cap of the external hexagonal bolt, thereby achieving the fixing of the external hexagonal bolt.
2. The coupling auxiliary assembly device according to claim 1, characterized in that, The hinge between adjacent links (1) is achieved by a pin hole (10) opened on the link (1) and a pin (2) inserted into the pin hole (10).
3. The coupling auxiliary assembly device according to claim 2, characterized in that, The head link (6) has a long locking groove (15) at its head; the tail link (7) has a groove at its tail end edge to form a hook-locking opening (14), and the locking groove (15) and the hook-locking opening (14) are fastened together by a locking buckle (a).
4. The coupling auxiliary assembly device according to claim 3, characterized in that, The locking connector (a) includes a locking handle (5) and a rotating shaft (21) passing through the locking handle (5). The middle part of the rotating shaft (21) is provided with a locking protrusion (16) that can be rotatably engaged with the locking opening (14). The free end of the rotating shaft (21) passes through the locking groove (15) and is provided with a shaft head (17). The shaft head (17) is used to axially limit the rotating shaft (21).
5. The coupling auxiliary assembly device according to claim 4, characterized in that, The locking connector (a) also includes a torsion spring (18) sleeved on the pivot (21) and located between the locking handle (5) and the outer side of the head link (6), the torsion spring (18) being used to reset the locking handle (5).
6. The coupling auxiliary assembly device according to claim 5, characterized in that, The locking connector (a) also includes a sleeve (20) fitted on the outer periphery of the pivot (21), the sleeve (20) being located inside the torsion spring (18).
7. The coupling auxiliary assembly device according to claim 1, characterized in that, Each link (1) is provided with a weight reduction hole (13).
8. The coupling auxiliary assembly device according to claim 7, characterized in that, The weight reduction hole (13) is a triangular hole.
9. The coupling auxiliary assembly device according to claim 1, characterized in that, One of the links (1) has a main wire fixing piece (8) on its side that is connected in series with multiple LED lights (4).
10. The coupling auxiliary assembly device according to claim 1, characterized in that, It also includes a handheld device and a communication module connected to the handheld device. The communication module is used to control the LED lights (4) to light up in sequence, and the communication module receives signals from the handheld device to control the LED lights (4) to turn off.