A guide wheel axle auxiliary assembly tool
By using a hydraulic cylinder driven by a guide wheel axle to drive the positioning tube and clamping mechanism of the assembly tooling, the problem of aligning the shaft hole in traditional assembly is solved, enabling a fast and accurate assembly process and improving the applicability and efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINING JINNIU MACHINERY CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-16
AI Technical Summary
The lack of an effective positioning and guiding mechanism in the traditional guide wheel axle assembly process makes it difficult to accurately align the axle and the hole, which wastes time and effort and reduces assembly efficiency.
A guide wheel shaft auxiliary assembly fixture was designed, which uses a hydraulic cylinder driven positioning tube and clamping mechanism to achieve precise alignment and rapid assembly of the shaft and hole. The fixture can be adapted to assembly tasks of different specifications through replaceable modular positioning tubes and clamps.
It improves the accuracy and first-time success rate of shaft hole alignment, enhances the applicability and economic benefits of the equipment, and increases assembly efficiency.
Smart Images

Figure CN224360080U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of guide wheel assembly technology, and in particular to an auxiliary assembly fixture for guide wheel shafts. Background Technology
[0002] In the field of mechanical manufacturing and assembly, the assembly of the guide wheel shaft and the guide wheel is a common and critical work process, and its assembly quality directly affects the operational stability, reliability and service life of mechanical equipment.
[0003] However, in the traditional assembly process of the guide wheel shaft, alignment between the shaft and the center hole of the guide wheel mainly relies on the operator's experience and manual operation. Due to the lack of an effective positioning and guiding mechanism, it is difficult for the operator to ensure precise alignment between the shaft and the hole when inserting the guide wheel shaft into the center hole of the guide wheel. It often requires repeated adjustments to the position and angle of the shaft, and multiple attempts to complete the assembly, which not only consumes a lot of time and effort, but also reduces assembly efficiency.
[0004] Therefore, it is necessary to design a guide wheel shaft auxiliary assembly fixture. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a guide wheel axle auxiliary assembly fixture.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A guide wheel axle auxiliary assembly fixture includes a base, a single-head hydraulic cylinder is embedded in the upper end of the base, the telescopic end of the single-head hydraulic cylinder faces upward and is fixedly connected to a mounting plate, a positioning tube is provided through the upper end of the mounting plate, and a mounting groove is provided in the lower end of the base. Two moving grooves are provided on the inner top wall of the mounting groove, and a double-head hydraulic cylinder is installed on the inner top wall of the mounting groove. Both telescopic ends of the double-head hydraulic cylinder are connected to a clamping mechanism, and the clamping mechanism is located inside the moving groove.
[0008] As a further improvement of this utility model, a first guide rod is fixedly connected to the lower end of the mounting plate, and the first guide rod passes through the upper end of the base and is slidably connected to the base.
[0009] As a further improvement of this utility model, a first fixing bolt is provided through the side wall of the mounting plate and screwed onto the mounting plate, and the first fixing bolt abuts against the positioning tube.
[0010] As a further improvement of this utility model, the clamping mechanism includes a movable plate slidably disposed inside the movable groove. The movable plate is fixedly connected to the telescopic end of the double-headed hydraulic cylinder. A plug rod is fixedly connected to the upper end of the movable plate. A sleeve is provided above the movable groove. A plug hole is provided at the lower end of the sleeve to cooperate with the plug rod. The plug rod is inserted into the plug hole.
[0011] As a further improvement of this utility model, a second fixing bolt is provided through the upper end of the sleeve, and the second fixing bolt is screwed to the upper end of the insertion rod.
[0012] As a further improvement of this utility model, a second guide rod is provided inside the mounting groove, and both ends of the second guide rod are fixedly connected to the inner wall of the mounting groove. The movable plate is slidably sleeved on the second guide rod.
[0013] The beneficial effects of this utility model are:
[0014] Once the guide wheel is clamped, the single-head hydraulic cylinder is activated to retract, causing the mounting plate and the fixed positioning tube on it to descend steadily until the positioning tube is accurately aligned with and close to the center hole of the guide wheel. Then, the operator only needs to insert the guide wheel shaft into the positioning tube, and the inner hole of the positioning tube will naturally guide the shaft to accurately align with the center hole of the guide wheel below. This mechanical positioning and guiding mechanism greatly improves the accuracy of shaft hole alignment and the success rate of one-time success.
[0015] The positioning tube and jacket adopt a clever and convenient replaceable modular structure design, which can quickly select and replace the positioning tube and jacket of the corresponding specifications. This allows a single tooling to efficiently serve a variety of assembly tasks of different specifications, improve equipment utilization and economic benefits, and significantly enhance applicability. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of an auxiliary assembly fixture for a guide wheel shaft proposed in this utility model;
[0017] Figure 2 This is a schematic diagram of the base and mounting groove of a guide wheel axle auxiliary assembly fixture proposed in this utility model;
[0018] Figure 3 This is a schematic diagram of the double-headed hydraulic cylinder, second guide rod, and clamping mechanism of a guide wheel axle auxiliary assembly fixture proposed in this utility model.
[0019] Figure 4 This is a schematic diagram of the moving plate, insert rod, sleeve, insertion hole, and second fixing bolt of the guide wheel axle auxiliary assembly fixture proposed in this utility model.
[0020] In the diagram: 1. Base, 2. Single-head hydraulic cylinder, 3. First guide rod, 4. Mounting plate, 5. Positioning tube, 6. First fixing bolt, 7. Jacket, 8. Moving slot, 9. Mounting slot, 10. Double-head hydraulic cylinder, 11. Second guide rod, 12. Moving plate, 13. Second fixing bolt, 14. Insert rod, 15. Insertion hole. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Reference Figures 1-4 A guide wheel axle auxiliary assembly fixture includes a base 1. A single-head hydraulic cylinder 2 is embedded in the upper end of the base 1. The telescopic end of the single-head hydraulic cylinder 2 faces upward and is fixedly connected to a mounting plate 4. A first guide rod 3 is fixedly connected to the lower end of the mounting plate 4. The first guide rod 3 passes through the upper end of the base 1 and is slidably connected to the base 1. A positioning tube 5 is provided through the upper end of the mounting plate 4. By activating the single-head hydraulic cylinder 2 to retract, the positioning tube 5 can be moved closer to the upper center hole of the guide wheel. Then, the guide wheel axle is inserted into the positioning tube 5, thereby enabling the guide wheel to be assembled. The shaft is quickly positioned into the center hole of the guide wheel, facilitating the subsequent assembly of the guide wheel shaft onto the guide wheel. A first fixing bolt 6, which is screwed onto the side wall of the mounting plate 4, is provided. The first fixing bolt 6 abuts against the positioning tube 5, and the positioning tube 5 is fixed by the first fixing bolt 6, making the disassembly and assembly of the positioning tube 5 more convenient, and thus facilitating the replacement of the positioning tube 5 to adapt to the positioning of different guide wheel shafts, thus making it more versatile. The lower end of the base 1 is provided with a mounting groove 9, and the inner top wall of the mounting groove 9 is provided with two moving grooves 8.
[0023] In this invention, a double-headed hydraulic cylinder 10 is installed on the inner top wall of the mounting groove 9. Both telescopic ends of the double-headed hydraulic cylinder 10 are connected to clamping mechanisms located inside the movable groove 8. The clamping mechanisms include a movable plate 12 slidably disposed inside the movable groove 8. The movable plate 12 is fixedly connected to the telescopic ends of the double-headed hydraulic cylinder 10. A rod 14 is fixedly connected to the upper end of the movable plate 12. A sleeve 7 is provided above the movable groove 8. By retracting the double-headed hydraulic cylinder 10, the two sleeves 7 can be brought closer together, clamping and fixing the guide wheel. The lower end of the sleeve 7 is provided with an insertion hole 15 that mates with the rod 14. The rod 14 is inserted into the insertion hole 15. Inside, a second fixing bolt 13 is provided through the upper end of the sleeve 7. The second fixing bolt 13 is screwed to the upper end of the insert rod 14. The sleeve 7 and the insert rod 14 can be connected by the second fixing bolt 13, making it easier to disassemble and assemble the sleeve 7, and thus easier to replace the sleeve 7. It can also adapt to the clamping of different guide wheels, making it more versatile. A second guide rod 11 is provided inside the mounting groove 9. Both ends of the second guide rod 11 are fixedly connected to the inner wall of the mounting groove 9. The moving plate 12 is slidably sleeved on the second guide rod 11. The second guide rod 11 can guide the movement of the moving plate 12 and ensure the stability of the movement of the moving plate 12.
[0024] When using this utility model, the guide wheel is placed on the base 1, and the double-headed hydraulic cylinder 10 is activated to retract, causing the two movable plates 12, which are fixedly connected to its telescopic ends, to slide relative to each other along the second guide rod 11 in the movable groove 8. This causes the two clamps 7 to move closer to each other and clamp the guide wheel. Then, the single-headed hydraulic cylinder 2 is activated to retract, causing the mounting plate 4 and the positioning tube 5 fixed on it to move downward. At the same time, the first guide rod 3 descends with the mounting plate 4 and slides relative to the base 1 to provide stable guidance, so that the positioning tube 5 descends precisely and approaches the center hole of the guide wheel. The guide wheel shaft is inserted into the positioning tube 5 from top to bottom. Under the precise guidance of the positioning tube 5, the shaft is easily aligned and inserted into the center hole of the guide wheel.
[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A guide wheel axle auxiliary assembly fixture, comprising a base (1), characterized in that, A single-head hydraulic cylinder (2) is embedded in the upper end of the base (1). The telescopic end of the single-head hydraulic cylinder (2) faces upward and is fixedly connected to an installation plate (4). A positioning tube (5) is provided through the upper end of the installation plate (4). An installation groove (9) is provided at the lower end of the base (1). Two moving grooves (8) are provided on the inner top wall of the installation groove (9). A double-head hydraulic cylinder (10) is installed on the inner top wall of the installation groove (9). Both telescopic ends of the double-head hydraulic cylinder (10) are connected to a clamping mechanism. The clamping mechanism is located inside the moving groove (8).
2. The guide wheel axle auxiliary assembly fixture according to claim 1, characterized in that, The lower end of the mounting plate (4) is fixedly connected to a first guide rod (3), which passes through the upper end of the base (1) and is slidably connected to the base (1).
3. The guide wheel axle auxiliary assembly fixture according to claim 1, characterized in that, The mounting plate (4) has a first fixing bolt (6) that is screwed onto the side wall of the mounting plate (4), and the first fixing bolt (6) abuts against the positioning tube (5).
4. The guide wheel axle auxiliary assembly fixture according to claim 1, characterized in that, The clamping mechanism includes a movable plate (12) that is slidably disposed inside the movable groove (8). The movable plate (12) is fixedly connected to the telescopic end of the double-headed hydraulic cylinder (10). A plug rod (14) is fixedly connected to the upper end of the movable plate (12). A sleeve (7) is provided above the movable groove (8). A plug hole (15) is provided at the lower end of the sleeve (7) to cooperate with the plug rod (14). The plug rod (14) is inserted into the plug hole (15).
5. The guide wheel axle auxiliary assembly fixture according to claim 4, characterized in that, The upper end of the sleeve (7) is provided with a second fixing bolt (13), which is screwed onto the upper end of the insert rod (14).
6. The guide wheel axle auxiliary assembly fixture according to claim 4, characterized in that, The mounting groove (9) is provided with a second guide rod (11) inside. Both ends of the second guide rod (11) are fixedly connected to the inner wall of the mounting groove (9). The moving plate (12) is slidably sleeved on the second guide rod (11).