Railway track compression device
By using a motor mounting bracket and sliding components connected by elastic elements in the sprayer, stable meshing of the gears and racks is ensured, solving the problem of unstable meshing caused by bending of the hanging rail, and improving the movement stability and accuracy of the sprayer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO HUAKEN IMPORT & EXPORT CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-06-05
AI Technical Summary
In existing overhead rail sprayers, the gears and racks become unstable due to uneven bending of the overhead rail after prolonged use, resulting in wear or disengagement, which affects the sprayer's movement stability and accuracy.
The motor mounting bracket, which uses elastic components for connection, is driven by a geared motor that engages with a rack and pinion. The combination of sliding and elastic components ensures flexible movement of the motor mounting bracket in the vertical direction, provides downward elastic force for stable engagement, and adapts to the bending state of the hanging rail.
This achieves stable meshing between the gear and rack, improves the accuracy and stability of the sprayer's movement, prevents excessive pressure or movement of the gears, and extends the service life of the equipment.
Smart Images

Figure CN224326963U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of greenhouse planting equipment technology, specifically to a track clamping device. Background Technology
[0002] In greenhouse cultivation, the application of pesticides, fertilizers, and water varies at each stage of crop growth. Even for the same crop at the same growth stage, the timing of pesticide application, the amount of fertilizer, and the amount of water used differ depending on the type of pest or disease and the specific growth conditions. Among the pesticides and fertilizers sprayed on crops are sodium nitrophenolate, which regulates crop growth; micronutrient fertilizers, which supplement crop nutrition; and antiviral agents, which provide antiviral protection. The effective distribution of these pesticides and fertilizers is crucial for ensuring healthy crop growth. When crops face hot and dry environments, spraying water can increase air humidity and lower the temperature. Applying small amounts of antiviral agents multiple times can also prevent viral infection in arid conditions. When insecticides are dispersed in a mist form on the undersides of leaves and inside flowers, they provide excellent pest control. The even distribution of antiviral agents can also effectively reduce the spore count of pathogens in the greenhouse, achieving full-coverage pest control. To ensure that pesticides and fertilizers are evenly distributed on crops and to improve the convenience of spraying, overhead rail sprayers are widely used. These sprayers can travel on overhead rails and spray pesticides and fertilizers evenly on crops.
[0003] In existing overhead rail sprayers, the sprayer moves on a overhead rail via a mounting frame and a sliding rail roller mechanism. A motor-driven gear and rack mechanism provides power for the movement of the mounting frame. The rack in the gear and rack mechanism is mounted on the overhead rail, while the gears, motor, and several rollers in the sliding rail roller mechanism are mounted on the mounting frame. The sliding rail in the sliding rail roller mechanism is mounted on the overhead rail. The applicant has discovered that, under normal conditions, the gear and rack are both at a constant height from the ground, ensuring stable meshing. However, after prolonged use, the weight of the sprayer causes some sections of the overhead rail to bend downwards. Some racks on these bent sections also bend downwards. When the degree of bending differs between sections of the rail and rack, the distance between the rail and rack from the ground does not decrease synchronously. This leads to excessive or insufficient contact between the gear and rack, resulting in excessive wear or disengagement of the gear and rack. There is an urgent need for a track clamping device that can ensure stable meshing between gears and racks. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a track clamping device that can ensure stable meshing between gears and racks.
[0005] To solve the above-mentioned technical problems, this utility model includes a hanging rail and a sprayer mounting frame. The hanging rail includes a supporting hanger, and several rails are fixedly connected to the supporting hanger. The sprayer mounting frame is provided with several roller sets, and the rails and roller sets correspond one-to-one. The sprayer mounting frame travels on the rails via the roller sets. The hanging rail is provided with a rack. Its structural feature is that the sprayer mounting frame is slidably connected to a motor mounting frame that can slide up and down via a sliding member. The motor mounting frame is fixedly provided with a reduction motor. The output end of the reduction motor is provided with a gear meshing on the rack. The sprayer mounting frame and the motor mounting frame are elastically connected by an elastic member that can provide a downward elastic force to the motor mounting frame.
[0006] With the above structure, the support frame is fixed in the greenhouse or on the ground, and the sprayer mounting frame moves via rollers and rails, allowing the sprayer mounted on the frame to move and spray crops. A drive mechanism consisting of a geared motor, gears, and racks provides power for the sprayer mounting frame's movement. The geared motor drives the gears to rotate, and the gears meshing with the racks move along the racks, thus allowing the sprayer mounting frame to move automatically via the rollers and rails. By incorporating a motor mounting frame, elastic elements, and sliding elements, the motor mounting frame can flexibly change its position in the vertical direction via the sliding elements. The elastic elements provide a downward elastic force to the motor mounting frame, ensuring its vertical position. The elastic force applied by the elastic elements prevents the gears from excessively pressing down on the racks and also prevents the gears from moving upwards. The elastic elements ensure stable meshing between the gears and racks, and the gears can adapt to downward and upward bending of the racks, thus accommodating the bending of the hanging rails. The sliding elements restrict the movement direction of the motor mounting frame, allowing it to move only in the vertical direction.
[0007] Furthermore, two tracks are installed on the support frame, one on the left and one on the right. The tracks extend parallel to the travel direction of the sprayer mounting frame. The sprayer mounting frame has two sets of rollers, each corresponding to one of the two tracks. By installing the two tracks and roller sets, the reliable support of the support frame for the sprayer mounting frame is ensured, as well as the accuracy and stability of the sprayer mounting frame during movement.
[0008] Furthermore, the sliding component includes a slide rail fixed to the sprayer mounting frame and a slide block slidably connected to the slide rail. The slide block can slide up and down on the slide rail. Several sliding components are spaced apart along the traveling direction of the sprayer mounting frame, and the motor mounting frame is connected to the slide block among the several sliding components. By setting the slide rail and slide blocks, the several slide blocks provide reliable support for the motor mounting frame. The slide blocks slide up and down on the slide rail, thereby allowing the motor mounting frame to float up and down. The slide rail and slide blocks restrict the motor mounting frame to only move up and down, ensuring the stability of the posture of the motor mounting frame, the reduction motor, and the gear during use.
[0009] Furthermore, the elastic element is a tension spring, the sprayer mounting bracket is provided with a tension spring through rod, and the motor mounting bracket is provided with a tension spring hanging hole. One end of the elastic element along its length is hung on the tension spring through rod, and the other end is hung on the tension spring hanging hole. By setting up the elastic element, the tension spring through rod, and the tension spring hanging hole, the elastic element provides a downward elastic force to the motor mounting bracket, ensuring that the gear can stably mesh with the rack when the motor mounting bracket floats.
[0010] Furthermore, the rack is positioned within either of the two tracks, and the roller assembly on the same side as the rack is located between the support frame and the rack, resting against the track. By positioning the rack within the track, the stability of the rack in use is ensured. At the same time, the support frame and the rack limit the movement direction of the roller assembly on the same side as the rack, ensuring accurate movement of the roller assembly and preventing it from deviating from its intended path.
[0011] Furthermore, the elastic element and the tension spring rod are provided in two separate pieces, and there are two tension spring hanging holes on the motor mounting bracket. The elastic element, the tension spring rod, and the tension spring hanging holes correspond one-to-one. By providing two elastic elements, a tension spring rod, and two tension spring hanging holes, a stable elastic tension is provided to the motor mounting bracket, ensuring the overall stability of the motor mounting bracket under stress.
[0012] In summary, this utility model has the advantages of reasonable structure and convenient use. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0014] Figure 2 This is a top view of the structure of this utility model;
[0015] Figure 3 This is a right-side structural schematic diagram of the present invention;
[0016] Figure 4 This is a simplified schematic diagram of the state of gears and racks in the prior art;
[0017] In the diagram: 1. Hanging rail; 11. Support hanger; 12. Track; 2. Sprayer mounting bracket; 21. Roller assembly; 211. Roller; 3. Rack; 4. Sliding component; 41. Slide rail; 42. Slide seat; 5. Motor mounting bracket; 51. Tension spring hanging hole; 6. Gear motor; 7. Gear; 8. Elastic component; 9. Tension spring rod. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention. For ease of understanding, Figure 2 The top is the front side of this utility model. Figure 2 The bottom is the rear side of this utility model. Figure 2 The left side is the left side of this utility model. Figure 2 The right side is the right side of this utility model. Figure 3 The top part is the top part of this utility model. Figure 3 The lower part is the bottom of this utility model. (See reference) Figure 4 , Figure 4 The diagram shows a roughly circular gear and a roughly elongated rack. Due to the different degrees of bending between some of the hanging rails and some of the racks, when the sprayer mounting frame moves on the hanging rails via the slide rail roller mechanism, there is a height difference between the gear on the sprayer mounting frame and the rack on the hanging rails, resulting in either excessive or insufficient contact between the gear and the rack.
[0019] Reference Figures 1 to 3 This utility model includes a hanging rail 1 and a sprayer mounting frame 2. The hanging rail 1 includes a supporting frame 11, to which several rails 12 are fixedly connected. The sprayer mounting frame 2 is provided with several roller sets 21, with each rail 12 corresponding to a roller set 21. The sprayer mounting frame 2 moves back and forth on the rails 12 via the roller sets 21. Specifically, two rails 12 are provided on the supporting frame 11, with the two rails 12 located on the left and right sides of the supporting frame 11, and the extension direction of the rails 12 being parallel to the travel direction of the sprayer mounting frame 2. The sprayer mounting frame 2 is provided with two roller sets 21, with each roller set 21 corresponding to a rail 12. The rails 12 are approximately L-shaped, and each roller set 21 includes two rollers 211 spaced back and forth on the sprayer mounting frame 2. The rollers 211 are rotatably connected to the sprayer mounting frame 2 via bearings and connecting rods. The track 12 can be welded to the support hanger 11. The support hanger 11 can be welded with reinforcing ribs, and the track 12 is welded to the reinforcing ribs to ensure the stability of the connection with the support hanger 11. The two tracks 12 and the roller assembly 21 ensure the reliable load-bearing capacity of the support hanger 11 on the sprayer mounting frame 2 and ensure the accuracy and stability of the sprayer mounting frame 2 when it moves.
[0020] Reference Figures 1 to 3The hanging rail 1 is equipped with a rack 3, which is located within either of the two rails 12. The roller assembly 21 on the same side as the rack 3 is located between the support frame 11 and the rack 3, and rests against the rail 12. By placing the rack 3 within the rail 12, the stability of the rack 3 is ensured. Simultaneously, the support frame 11 and the rack 3 limit the movement direction of the roller assembly 21 on the same side as the rack 3, ensuring accurate movement of the roller assembly 21 and preventing it from deviating. The sprayer mounting frame 2 is slidably connected to a motor mounting frame 5 via a sliding member 4. Specifically, the sliding member 4 includes a slide rail 41 fixed to the sprayer mounting frame 2 and a slide seat 42 slidably connected to the slide rail 41. The slide seat 42 can slide up and down on the slide rail 41. Several sliding members 4 are spaced apart along the travel direction of the sprayer mounting frame 2. The motor mounting frame 5 is connected to the slide seat 42 among the several sliding members 4. The slide rail 41 has recesses on its front and rear sides, and the slide block 42 has protrusions that can extend into the recesses, thus restricting the slide block 42 to slide up and down only on the slide rail 41. In this embodiment, there are two slide rails 41 and two slide blocks 42, with one slide rail 41 and one slide block 42 corresponding to each other. The motor mounting bracket 5 is fixedly equipped with a reduction motor 6, and the output end of the reduction motor 6 is equipped with a gear 7 that meshes with the rack 3. By setting the slide rail 41 and the slide block 42, a plurality of slide blocks 42 provide reliable support for the motor mounting bracket 5. The slide blocks 42 slide up and down on the slide rail 41, thereby allowing the motor mounting bracket 5 to float up and down. The slide rail 41 and the slide blocks 42 restrict the motor mounting bracket 5 to move only up and down, ensuring the stability of the posture of the motor mounting bracket 5, the reduction motor 6, and the gear 7 during use.
[0021] Reference Figures 1 to 3 The sprayer mounting bracket 2 and the motor mounting bracket 5 are elastically connected by an elastic element 8, which provides a downward elastic force to the motor mounting bracket 5. The sprayer mounting bracket 2 may have a clearance groove to avoid interference between the output end of the geared motor 6 and the sprayer mounting bracket 2 when the motor mounting bracket 5 floats up and down. The elastic element 8 is a tension spring. The sprayer mounting bracket 2 has a tension spring through rod 9, and the motor mounting bracket 5 has a tension spring hanging hole 51. One end of the elastic element 8 along its length is hung on the tension spring through rod 9, and the other end is hung on the tension spring hanging hole 51. By setting the elastic element 8, the tension spring through rod 9, and the tension spring hanging hole 51, the elastic element 8 provides a downward elastic pull to the motor mounting bracket 5, ensuring that the gear 3 can stably mesh with the rack 7 when the motor mounting bracket 5 floats. The elastic element 8 and the tension spring through rod 9 are provided in two separate pieces, and there are two tension spring hanging holes 51 on the motor mounting bracket 5, with each pair corresponding to the other. By setting two elastic elements 8, a tension spring rod 9, and two tension spring hanging holes 51, a stable elastic tension is provided to the motor mounting bracket 5, ensuring the overall stability of the motor mounting bracket 5 when subjected to force.
[0022] In use, the support frame 11 is fixed to the greenhouse or the ground, and the sprayer mounting frame 2 moves via the roller assembly 21 and the track 12, allowing the sprayer mounted on the mounting frame 2 to move and spray crops. A drive mechanism consisting of a reduction motor 6, gears 7, and a rack 3 provides power for the movement of the sprayer mounting frame 2. The reduction motor 6 drives the gear 7 to rotate, and the gear 7 meshes with the rack 3, moving along the rack 3, thus allowing the sprayer mounting frame 2 to move automatically via the roller assembly 21 and the track 12. By configuring the motor mounting bracket 5, the elastic element 8, and the sliding element 4, the motor mounting bracket 5 can flexibly change its position in the vertical direction via the sliding element 4. The elastic element 8 provides a downward elastic force to the motor mounting bracket 5 to ensure its position in the vertical direction. The elastic force applied by the elastic element 8 to the motor mounting bracket 5 can prevent the gear 7 from excessively pressing the rack 3 downwards and also prevent the gear 7 from moving upwards. The elastic element 8 ensures stable meshing between the gear 7 and the rack 3. The gear 7 can adapt to the downward and upward bending of the rack 3, thus adapting to the bending state of the hanging rail 1. The sliding element 4 restricts the movement direction of the motor mounting bracket 5, allowing it to move only in the vertical direction.
[0023] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims of this patent, they should all fall within the protection scope of this utility model.
Claims
1. A track clamping device, comprising a hanging rail (1) and a sprayer mounting frame (2), wherein the hanging rail (1) includes a support hanger (11), the support hanger (11) is fixedly connected to a plurality of rails (12), the sprayer mounting frame (2) is provided with a plurality of roller sets (21), the rails (12) and the roller sets (21) correspond one-to-one, the sprayer mounting frame (2) travels on the rails (12) via the roller sets (21), and the hanging rail (1) is provided with a rack (3), characterized in that: The sprayer mounting frame (2) is slidably connected to a motor mounting frame (5) that can slide up and down via a sliding member (4). The motor mounting frame (5) is fixedly equipped with a reduction motor (6). The output end of the reduction motor (6) is provided with a gear (7) meshing on a rack (3). The sprayer mounting frame (2) and the motor mounting frame (5) are elastically connected via an elastic member (8). The elastic member (8) can provide a downward elastic force to the motor mounting frame (5).
2. The track clamping device according to claim 1, characterized in that: Two tracks (12) are provided on the support frame (11). The two tracks (12) are respectively located on the left and right sides of the support frame (11). The extension direction of the tracks (12) is parallel to the walking direction of the sprayer mounting frame (2). The sprayer mounting frame (2) is provided with two roller sets (21), and the two roller sets (21) correspond one-to-one with the two tracks (12).
3. The track clamping device according to claim 1, characterized in that: The sliding component (4) includes a slide rail (41) fixed on the sprayer mounting frame (2) and a slide seat (42) slidably connected to the slide rail (41). The slide seat (42) can slide up and down on the slide rail (41). Several sliding components (4) are arranged at intervals along the travel direction of the sprayer mounting frame (2). The motor mounting frame (5) is connected to the slide seat (42) among the several sliding components (4).
4. The track clamping device according to claim 1, characterized in that: The elastic element (8) is a tension spring. The sprayer mounting frame (2) is provided with a tension spring rod (9). The motor mounting frame (5) is provided with a tension spring hanging hole (51). One end of the elastic element (8) in the length direction is hung on the tension spring rod (9) and the other end is hung on the tension spring hanging hole (51).
5. The track clamping device according to claim 2, characterized in that: The rack (3) is located in either of the two tracks (12), and the roller group (21) on the same side as the rack (3) is located between the support hanger (11) and the rack (3) and abuts against the track (12).
6. The track clamping device according to claim 4, characterized in that: The elastic element (8) and the tension spring rod (9) are provided in two separate parts. The tension spring hanging hole (51) is provided in two parts on the motor mounting bracket (5). The elastic element (8), the tension spring rod (9), and the tension spring hanging hole (51) correspond one to one.