Precise traction trolley device
The precision traction trolley device driven by a rack and pinion servo motor solved the problem of inaccurate positioning, achieved precise control of the spacing between spiral ribs, improved product quality, and reduced production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANHUA CONSTRUCTION MATERIALS (CHINA) CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-15
AI Technical Summary
The inaccurate positioning of the existing traction trolley leads to large errors in the control of the spiral rib spacing, increasing production costs.
The drive system employs a gear and rack mechanism combined with a servo motor, guided by a linear guide rail to precisely control the movement of the traction trolley. Combined with a reducer and a lubrication mechanism for felt gears, the accuracy of the spiral rib spacing is ensured.
Precise control of the spiral rib spacing has been achieved, improving product quality and reducing production costs.
Smart Images

Figure CN224238471U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe piles, and more particularly to the field of roll welding machine operation, specifically referring to a precision traction trolley device. Background Technology
[0002] Currently, the traction trolley uses a variable frequency electric drive chain for linear movement. Rollers are used for linear guidance, but these have gaps within the guide grooves, leading to inaccurate positioning. The variable frequency motor has poor control precision, and the chain's transmission accuracy is limited by tension and its own inherent precision.
[0003] The existing old structure cannot precisely control the spacing, which means that in order to produce qualified cage reinforcement spiral reinforcement spacing, the amount of spiral reinforcement used must be sacrificed, and the spiral reinforcement spacing value must be artificially controlled to be smaller than the spacing value specified by the process. This increases the amount of spiral reinforcement used per unit length of cage reinforcement welding and increases production costs.
[0004] For the reasons mentioned above, the variable frequency motor drives the traction trolley to move in an inaccurate position in the guide groove via the chain. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a precision traction trolley device that has small error, low production cost, and wide applicability.
[0006] To achieve the above objectives, the precision traction trolley device of this utility model is as follows:
[0007] The main features of this precision traction trolley device are as follows: the device includes a gear, a servo motor, a rack, a linear slide rail, a traction frame, a base, a base plate, and a slider. The base is installed on the ground, the linear slide rail is fixedly installed on the base with bolts, the traction frame is fixedly installed on the base plate, the slider is installed at the bottom of the base plate and is also installed inside the linear slide rail, the servo motor is fixedly installed inside the traction frame, the rack is installed on the side of the base, and the gear is installed below the servo motor and meshes with the rack. The servo motor drives the gear to rotate, and through the force between the gear and the rack, it drives the slider to move back and forth in the linear slide rail, and also drives the traction frame to move back and forth.
[0008] Preferably, the device further includes a speed reducer, which is mounted below the servo motor and fixedly mounted inside the traction frame, with the gear mounted below the speed reducer.
[0009] Preferably, the device further includes a traction plate, which is mounted in front of the traction frame.
[0010] Preferably, the device further includes a felt gear fixed below the reducer, the felt gear being coated with lubricating oil, and the lubricating oil on the felt gear being applied to the rack during rotation.
[0011] Preferably, the device further includes a buffer pad, which is installed on both the front and rear sides of the traction frame.
[0012] The precision traction trolley device of this utility model has the structural advantage of using a gear and rack combined with a servo motor to precisely drive and control the entire trolley during the roll welding process. This can effectively ensure the accurate control of the spacing of the spiral ribs during the roll welding process, which can improve the overall product quality and make the welded cage reinforcement look neat. It can also save the amount of spiral rib raw materials used and reduce production costs by precisely controlling the spacing of the spiral ribs. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the servo motor of the precision traction trolley device of this utility model.
[0014] Figure 2 This is a schematic diagram of the traction frame of the precision traction trolley device of this utility model.
[0015] Figure 3 This is a structural schematic diagram of the precision traction trolley device of this utility model.
[0016] Figure 4 This is a side view of the precision traction trolley device of this utility model.
[0017] Figure label:
[0018] 1. Gear
[0019] 2. Gearbox
[0020] 3 servo motors
[0021] 4 racks
[0022] 5. Linear guide rails
[0023] 6 Felt Gears
[0024] 7. Wire cage traction plate
[0025] 8. Cushioning Pads
[0026] 9 Traction Frame
[0027] 11. Base
[0028] 12 base plate
[0029] 13 sliders Detailed Implementation
[0030] To more clearly describe the technical content of this utility model, the following description is provided in conjunction with specific embodiments.
[0031] This utility model discloses a precision traction trolley device, comprising a gear 1, a servo motor 3, a rack 4, a linear slide rail 5, a traction frame 9, a base 11, a base plate 12, and a slider 13. The base 11 is mounted on the ground, the linear slide rail 5 is fixedly mounted on the base 11 by bolts, the traction frame 9 is fixedly mounted on the base plate 12, the slider 13 is mounted on the bottom of the base plate 12, and the slider 13 is also mounted inside the linear slide rail 5. The servo motor 3 is fixedly mounted inside the traction frame 9, the rack 4 is mounted on the side of the base 11, and the gear 1 is mounted below the servo motor 3, with the gear 1 meshing with the rack 4. The servo motor 3 drives the gear 1 to rotate, and through the force between the gear 1 and the rack 4, drives the slider 13 to move back and forth in the linear slide rail 5, and also drives the traction frame 9 to move back and forth.
[0032] In a preferred embodiment of the present invention, the device further includes a speed reducer 2, which is installed below the servo motor 3 and fixedly installed inside the traction frame 9, and the gear 1 is installed below the speed reducer 2.
[0033] In a preferred embodiment of the present invention, the device further includes a rib cage traction disc 7, which is installed in front of the traction frame 9.
[0034] In a preferred embodiment of the present invention, the device further includes a felt gear 6, which is fixed below the reducer 2. The felt gear 6 is coated with lubricating oil, and during the rotation of the felt gear 6, the lubricating oil on the felt gear 6 is applied to the rack 4.
[0035] In a preferred embodiment of the present invention, the device further includes a buffer pad 8, which is installed on the front and rear sides of the traction frame 9.
[0036] Precision traction trolleys are used in the pipe pile industry, working in conjunction with roll welding machines. The roll welding machine winds spiral steel bars onto a reinforcement cage for welding, while the traction trolley precisely controls the movement distance of the reinforcement cage, thus ensuring the spacing between each turn of the spiral bars. The precision traction trolley assists the roll welding machine in its automatic roll welding operation, guaranteeing the dimensional spacing of the spiral bars in the reinforcement cage.
[0037] In a specific embodiment of this invention, a servo motor is used, driven by a rack and pinion mechanism, with a linear guide rail for precise traction control, resulting in less positional error when the trolley drags the reinforcing cage. A servo motor 3 is used, driven by a gear 1 and a rack 4, with a linear guide rail for guidance.
[0038] The servo motor 3 drives the gear 1 to rotate through the transmission component 2.
[0039] The rotational force of gear 1 acts on the fixed rack 4, resulting in a reaction force that moves the traction frame 9 along the linear slide rail 5. The oiled felt gear 6 rotates, spreading the oil onto the rack 4.
[0040] The reinforcing cage traction disc 7 is fixed on the traction frame 9. When the upset part of the main reinforcing bar head of the reinforcing cage is stuck in the reinforcing cage traction disc 7, the traction trolley can drive the reinforcing cage to move accurately.
[0041] For the specific implementation scheme of this embodiment, please refer to the relevant descriptions in the above embodiments, which will not be repeated here.
[0042] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.
[0043] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means at least two.
[0044] 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.
[0045] The precision traction trolley device of this utility model has the structural advantage of using a gear and rack combined with a servo motor to precisely drive and control the entire trolley during the roll welding process. This can effectively ensure the accurate control of the spacing of the spiral ribs during the roll welding process, which can improve the overall product quality and make the welded cage reinforcement look neat. It can also save the amount of spiral rib raw materials used and reduce production costs by precisely controlling the spacing of the spiral ribs.
[0046] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be considered illustrative rather than restrictive.
Claims
1. A precision traction trolley device, characterized in that, The device includes a gear, a servo motor, a rack, a linear slide rail, a traction frame, a base, a base plate, and a slider. The base is installed on the ground, the linear slide rail is fixedly installed on the base with bolts, the traction frame is fixedly installed on the base plate, the slider is installed at the bottom of the base plate and is also installed inside the linear slide rail, the servo motor is fixedly installed inside the traction frame, the rack is installed on the side of the base, and the gear is installed below the servo motor and meshes with the rack. The servo motor drives the gear to rotate, and through the force between the gear and the rack, it drives the slider to move back and forth in the linear slide rail, and also drives the traction frame to move back and forth.
2. The precision traction trolley device according to claim 1, characterized in that, The device also includes a speed reducer, which is installed below the servo motor and fixedly installed inside the traction frame, with the gear installed below the speed reducer.
3. The precision traction trolley device according to claim 1, characterized in that, The device also includes a rib cage traction disc, which is installed in front of the traction frame.
4. The precision traction trolley device according to claim 2, characterized in that, The device also includes a felt gear, which is fixed below the reducer. The felt gear is coated with lubricating oil, and during rotation, the lubricating oil on the felt gear is applied to the rack.
5. The precision traction trolley device according to claim 1, characterized in that, The device also includes a buffer pad, which is installed on the front and rear sides of the traction frame.