Environment-friendly bamboo spoon polishing device
By designing an automated and environmentally friendly bamboo spoon polishing device and using a servo motor to drive a linkage structure and multiple polishing components, the automated and continuous polishing of the bamboo spoon grooves is achieved, which solves the problem of low manual operation efficiency and improves the polishing efficiency.
Patent Information
- Application Number
- CN202422770822.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-13
AI Technical Summary
The grinding of bamboo spoon grooves is difficult to complete automatically, manual operation is inefficient, and continuous grinding cannot be achieved.
An environmentally friendly bamboo spoon polishing device was designed, which included a conveying platform, a polishing jig, and multiple polishing mechanisms. The jig was automatically moved by a servo motor-driven linkage structure, and multiple polishing components were used to automatically polish the inner concave, both sides, and front and back edges of the bamboo spoon.
The invention realizes the automatic and continuous grinding of the bamboo spoon, improves the grinding efficiency, and solves the problem of low efficiency of manual operation.
Smart Images
Figure CN223353885U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bamboo spoon grinding equipment, in particular to an environmentally friendly bamboo spoon grinding device. Background Art
[0002] With the continuous development of the economy and the continuous advancement of science and technology, people are provided with a wealth of material consumer goods, creating good conditions for promoting the continuous improvement of people's living standards. Spoons are one of the many material consumer goods in people's lives. As people's environmental awareness continues to increase, bamboo and wood spoons have begun to be widely used and popularized. During the processing of bamboo and wood spoons, automatic grinders are required to grind the grooves. However, the grooves of bamboo spoons are not circular grooves. Using a single grinding part to grind them into the desired shape is difficult, and manual multi-angle grinding is often required. However, manual grinding is inefficient and cannot be automated to complete continuous grinding. Utility Model Content
[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one purpose of the present invention is to provide an environmentally friendly bamboo spoon grinding device that solves the problems of poor grinding effect and low grinding efficiency of manual operation.
[0004] According to the utility model, an environmentally friendly bamboo spoon grinding device is provided, which includes a conveying platform, a grinding jig, a first grinding mechanism, a second grinding mechanism and a third grinding mechanism;
[0005] The conveying platform is provided with a cross-shaped conveying trough channel, and push rack belts are provided in the inner grooves on the two side walls of the cross-shaped conveying trough channel, and rollers are used to support the two ends of the push rack belts at both ends of the inner grooves. The rotating shafts on the rollers at the tail ends of the two push rack belts extend downward, and a linkage structure is used between the two rotating shafts to realize the synchronous rotation of the two rollers, and a servo motor is installed on the rotating shaft of one of the rollers;
[0006] The grinding jig includes a jig block and slide rails symmetrically arranged on both sides of the jig block, a driven rack is provided on the side wall of the slide rail, a bamboo spoon groove is provided on the jig block, and a rotating fixed rod is provided on the upper surface of the jig block next to the bamboo spoon groove. The slide rails on both sides of the jig block are correspondingly inserted into the inner groove and the driven rack is engaged with the push rack belt;
[0007] The first grinding mechanism, the second grinding mechanism and the third grinding mechanism are respectively arranged at equal intervals above the cross-shaped conveying trough channel of the conveying platform, and the first grinding mechanism, the second grinding mechanism and the third grinding mechanism each include an inverted shaped frame for installation, and the first grinding assembly, the second grinding assembly and the third grinding assembly are respectively installed in the inverted shaped frames on the first grinding mechanism, the second grinding mechanism and the third grinding mechanism. Two groups of locking cylinders are symmetrically provided on the conveying platform inside the inverted shaped frames on the first grinding mechanism, the second grinding mechanism and the third grinding mechanism on the edge of the cross-shaped conveying trough channel, and the cylinder shaft of the locking cylinder can be inserted into the inner groove to extrude the slide rail. A limiting cylinder is embedded in the bottom wall of the cross-shaped conveying trough channel at the tail end position below the inverted shaped frames on the first grinding mechanism, the second grinding mechanism and the third grinding mechanism.
[0008] In some embodiments of the present invention, the linkage structure includes a driving gear plate, a driven gear plate, a driving pulley and a driven pulley, the upper shaft of the roller corresponding to the servo motor is provided with a driving gear plate at the bottom position and the upper shaft of the other roller is provided with a driven pulley at the bottom position, the driven gear plate and the driving pulley are arranged up and down and the center positions are on the same axis, the axial position of the driven gear plate and the driving pulley is mounted on the rotating rod, the driving gear plate is meshed with the driven gear plate, and the driving pulley and the driven pulley are connected by a belt.
[0009] In other embodiments of the present invention, the first grinding assembly includes an installation box, a first push-down motor, a first push-down screw, a first push-down block, an intermediate grinding motor and a first grinding head. The first push-down screw is installed on the rotating shaft of the first push-down motor. The first push-down screw spirally penetrates from the top center position of the first push-down block to the interior. A downwardly arranged intermediate grinding motor is provided in the bottom end of the first push-down block, and a first grinding head is sleeved on the rotating shaft of the intermediate grinding motor. The first push-down motor, the first push-down screw and the first push-down block are installed in the installation box, and the first push-down block movably penetrates the lower half of the installation box.
[0010] In other embodiments of the present invention, the second grinding assembly includes an installation box, a second push-down motor, a second push-down screw, a second push-down block, a swing motor, two-side grinding motors and a second grinding head, the second push-down screw is installed on the rotating shaft of the second push-down motor, the second push-down screw spirally penetrates into the interior from the top center position of the second push-down block, a downward-facing swing motor is provided in the bottom end of the second push-down block, a rotating mounting block is mounted on the rotating shaft of the swing motor, and two-side grinding motors inclined toward both sides are symmetrically installed on both sides of the rotating mounting block, and the rotating shafts of the two two-side grinding motors are both covered with a second grinding head, the second push-down motor, the second push-down screw and the second push-down block are installed in the installation box, and the second push-down block movably passes through the lower half of the installation box.
[0011] In other embodiments of the present invention, the third grinding assembly includes an installation box, a third pushing motor, a third pushing screw, a third pushing block, a second swinging motor, a front and rear grinding motor and a third grinding head, a third pushing screw is installed on the rotating shaft of the third pushing motor, the third pushing screw spirally penetrates into the interior from the top center position of the third pushing block, a second swinging motor set downwards is provided in the bottom end of the third pushing block, a second rotating mounting block is mounted on the rotating shaft of the second swing motor, and front and rear grinding motors tilted forward and backward are symmetrically installed on both sides of the second rotating mounting block, and a third grinding head is mounted on the rotating shafts of the two front and rear grinding motors, the third pushing motor, the third pushing screw and the third pushing block are installed in the installation box, and the third pushing block movably passes through the lower half of the installation box.
[0012] In other embodiments of the present invention, a plurality of supporting rollers are provided at equal intervals on the inner side of the pushing rack belt.
[0013] In the utility model, the originally cut bamboo spoon model is placed in the bamboo spoon groove and fixed with a rotating fixing rod, the jig block is pushed into the cross-shaped conveying groove channel, and the jig is pushed to move by pushing the rack belt. After reaching the position of the first grinding mechanism and being fixed, the concave grinding is performed, and the second grinding mechanism is used to extend and grind the sides of the grinded groove, and the third grinding mechanism is used to grind the groove front and back to complete the grinding of the bamboo spoon, and finally the jig is sent out. The grinding is automated and the grinding efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0015] Figure 1 This is a structural schematic diagram of an environmentally friendly bamboo spoon grinding device proposed in the utility model.
[0016] Figure 2 for Figure 1 Enlarged schematic diagram of point A in the middle.
[0017] Figure 3 This is a schematic diagram of the structure of the fixture block proposed in this utility model. The first grinding component, the second grinding component and the third grinding component
[0018] Figure 4 This is a schematic cross-sectional structural diagram of the first grinding assembly proposed in the present invention.
[0019] Figure 5 This is a schematic cross-sectional structural diagram of the second grinding assembly proposed in the present invention.
[0020] Figure 6 This is a schematic cross-sectional structural diagram of the third grinding assembly proposed in the present invention.
[0021] Figure 7 This is a schematic diagram of the installation position of the limit cylinder proposed in the utility model.
[0022] Figure 8 This is a schematic diagram of the positions of the support roller and the pushing gear belt proposed in the utility model.
[0023] In the figure: 1. Conveyor platform; 11. Servo motor; 100. Support roller; 2. Push rack belt; 21. Driving gear plate; 22. Driven gear plate; 221. Driving pulley; 23. Driven pulley; 3. Cross-shaped conveyor channel; 4. First grinding mechanism; 41. First push-down motor; 42. First push-down screw rod; 43. First push-down block; 44. Intermediate grinding motor; 45. First grinding head; 5. Second grinding mechanism; 51. Second push-down motor; 52. Second push-down screw rod Rod; 53, second push-down block; 54, swing motor; 55, rotating mounting block; 56, two-side grinding motor; 57, second grinding head; 6, third grinding mechanism; 61, third push-down motor; 62, third push-down screw rod; 63, third push-down block; 64, second swing motor; 65, second rotating mounting block; 66, front and rear grinding motor; 67, third grinding head; 7, locking cylinder; 8, fixture block; 81, slide rail; 811, driven rack; 82, bamboo spoon slot; 9, limit cylinder. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0025] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0026] Reference Figure 1-8 , an environmentally friendly bamboo spoon grinding device, comprising a conveying platform 1, a grinding jig, a first grinding mechanism 4, a second grinding mechanism 5 and a third grinding mechanism 6;
[0027] The conveying platform 1 is provided with a cross-shaped conveying trough channel 3, and a push rack belt 2 is provided in the inner grooves on the two side walls of the cross-shaped conveying trough channel 3, and rollers are used to support the two ends of the push rack belt 2 at both ends of the inner groove. The rotating shafts of the rollers at the conveying ends of the two push rack belts 2 extend downward, and a linkage structure is used between the two rotating shafts to realize the synchronous rotation of the two rollers, and a servo motor 11 is installed on the rotating shaft of one of the rollers;
[0028] The grinding jig includes a jig block 8 and slide rails 81 symmetrically arranged on both sides of the jig block 8, a driven rack 811 is provided on the side wall of the slide rail 81, a bamboo spoon groove 82 is provided on the jig block 8, and a rotating fixed rod 83 is provided on the upper surface of the jig block 8 next to the bamboo spoon groove 82. The slide rails 81 on both sides of the jig block 8 are correspondingly inserted into the inner grooves and the driven rack 811 is engaged with the push rack belt 2; the two push rack belts 2 push the slide rails on both sides of the jig block 8 to realize the movement of the jig;
[0029] The first grinding mechanism 4, the second grinding mechanism 5 and the third grinding mechanism 6 are respectively arranged at equal intervals above the cross-shaped conveying trough channel 3 of the conveying platform, and the first grinding mechanism 4, the second grinding mechanism 5 and the third grinding mechanism 6 each include an inverted shaped frame for installation, and the first grinding assembly, the second grinding assembly and the third grinding assembly are respectively installed in the inverted shaped frames on the first grinding mechanism 4, the second grinding mechanism 5 and the third grinding mechanism 6. Two groups of locking cylinders 7 are symmetrically provided on the conveying platform inside the inverted shaped frames on the first grinding mechanism 4, the second grinding mechanism 5 and the third grinding mechanism 6 on the edge of the cross-shaped conveying trough channel 3, and the cylinder shaft of the locking cylinder 7 can be inserted into the inner groove to extrude the slide rail 81. A limiting cylinder 9 is embedded in the bottom wall of the cross-shaped conveying trough channel 3 at the tail end position below the inverted shaped frames on the first grinding mechanism 4, the second grinding mechanism 5 and the third grinding mechanism 6.
[0030] Before the jig moves to the position of the first grinding mechanism 4, the lifting cylinder shaft 91 of the first limit cylinder 9 is first raised to limit the jig and then stop pushing. At this time, the two sets of locking cylinders 7 at the position of the first grinding mechanism 4 push down the extrusion slide rail to lock it and start grinding. After the initial grinding is completed, the extrusion is released and the lifting cylinder shaft 91 is lowered. The next lifting cylinder shaft 91 is raised and locked again in the second grinding mechanism 5. The bamboo spoon is further ground. After the grinding is completed, the extrusion lock is released and the lifting cylinder shaft 91 is lowered. Then, the bamboo spoon is further ground. After the grinding is completed, the extrusion lock is released and the lifting cylinder shaft 91 is lowered. Then, the bamboo spoon is further ground in the third grinding mechanism 6 for similar operations. After the grinding is completed, it is output.
[0031] After the bamboo spoon is placed in the bamboo spoon groove 82, the rotating fixing rod 83 is rotated and the end of the rotating fixing rod 83 is screwed onto the base 1 with a bolt to fix the bamboo spoon to prevent it from shaking during grinding.
[0032] The linkage structure includes a driving gear plate 21, a driven gear plate 22, a driving pulley 221 and a driven pulley 23. The upper shaft of the roller corresponding to the servo motor 11 is provided with a driving gear plate 21 at the bottom position and the upper shaft of the other roller is provided with a driven pulley 23 at the bottom position. The driven gear plate 22 and the driving pulley 221 are arranged up and down and their center positions are on the same axis. The axis positions of the driven gear plate 22 and the driving pulley 221 are mounted on the rotating rod. The driving gear plate 21 is meshed with the driven gear plate 22. The driving pulley 221 and the driven pulley 23 are connected by a belt.
[0033] The rotating shaft driven by the servo motor rotates, driving the driving gear plate 21 to rotate, thereby driving the driven gear plate 22 to rotate (the driving gear plate 21 and the driven gear plate 22 are the same size), thereby driving the driving pulley 221 to rotate, and driving the driven pulley 23 to rotate through the belt (the driving pulley 221 is the same size as the driven pulley 23), thereby realizing synchronous driving of the two push rack belts 2.
[0034] The first grinding assembly includes an installation box, a first push-down motor 41, a first push-down screw 42, a first push-down block 43, an intermediate grinding motor 44 and a first grinding head 45. The first push-down screw 42 is installed on the rotating shaft of the first push-down motor 41. The first push-down screw 42 spirally penetrates from the top center position of the first push-down block 43 to the interior. A downwardly arranged intermediate grinding motor 44 is provided in the bottom end of the first push-down block 43, and a first grinding head 45 is sleeved on the rotating shaft of the intermediate grinding motor 44. The first push-down motor 41, the first push-down screw 42 and the first push-down block 43 are installed in the installation box, and the first push-down block 43 moves through the lower half of the installation box.
[0035] When grinding is required, the first push-down motor 41 drives the first push-down screw 42 to rotate, thereby pushing the first push-down block 43 to move down or up. When moving down, the first grinding head 45 is pressed against the spoon head of the bamboo spoon to grind a circular groove inward. After grinding is completed, the first push-down block 43 is moved up.
[0036] The second grinding assembly includes an installation box, a second push-down motor 51, a second push-down screw rod 52, a second push-down block 53, a swing motor 54, two-side grinding motors 56 and a second grinding head 57. The second push-down screw rod 52 is installed on the rotating shaft of the second push-down motor 51, and the second push-down screw rod 52 spirally penetrates from the top center position of the second push-down block 53 to the interior. The bottom end of the second push-down block 53 is provided with a downward-facing swing motor 54, and a rotating mounting block 55 is mounted on the rotating shaft of the swing motor 54. Two-side grinding motors 56 inclined toward both sides are symmetrically installed on both sides of the rotating mounting block 55, and two second grinding heads 57 are mounted on the rotating shafts of the two two-side grinding motors 56. The second push-down motor 51, the second push-down screw rod 52 and the second push-down block 53 are installed in the installation box, and the second push-down block 53 moves through the lower half of the installation box.
[0037] Similarly, when the second push-down block 53 is lowered, the second grinding head 57 is attached to the two sides of the circular groove that has been polished for the first time, and the rotating mounting block 55 is swung left and right, so that the two side grinding motors 56 swing back and forth to polish the opposite sides, and the second grinding head 57 achieves the effect of polishing the two sides of the circular groove outward. After polishing is completed, the second push-down block 53 is raised.
[0038] The third grinding assembly includes an installation box, a third pushing-down motor 61, a third pushing-down screw 62, a third pushing-down block 63, a second swinging motor 64, a front and rear grinding motor 66 and a third grinding head 67. The third pushing-down screw 62 is installed on the rotating shaft of the third pushing-down motor 61, and the third pushing screw 62 spirally penetrates into the interior from the top center position of the third pushing-down block 63. The bottom end of the third pushing block 63 is provided with a second swinging motor 64 set downward, and the rotating shaft of the second swinging motor 64 is covered with a second rotating mounting block 65. The front and rear grinding motors 66 set tilted forward and backward are symmetrically installed on both sides of the second rotating mounting block 65. The rotating shafts of the two front and rear grinding motors 66 are both covered with a third grinding head 67. The third pushing-down motor 61, the third pushing screw 62 and the third pushing block 63 are installed in the installation box, and the third pushing block 63 moves through the lower half of the installation box.
[0039] At the third grinding position, the third push-down block 63 moves downward to contact the third grinding head 67 on the front and rear grinding motor 66 with the front and rear edges of the circular groove, performs swing expansion grinding, and finally completes the overall grinding to grind out a better notch. After the grinding is completed, the third push-down block 63 is raised.
[0040] A plurality of support rollers 100 are provided at equal intervals inside the push rack belt 2 to prevent the longer push rack belt 2 from deforming and reduce the driving force, and the support rollers 100 provided at equal intervals in the middle play a role in supporting the push rack belt 2, preventing deformation and improving the driving force.
[0041] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An environmentally friendly bamboo spoon polishing device, characterized by: It comprises a conveying platform (1), a grinding jig, a first grinding mechanism (4), a second grinding mechanism (5) and a third grinding mechanism (6); The conveying platform (1) is provided with a cross-shaped conveying trough channel (3), and push rack belts (2) are provided in the inner grooves on the two side walls of the cross-shaped conveying trough channel (3), and rollers are used to support the two ends of the push rack belts (2) at the two ends of the inner grooves. The rotating shafts on the rollers at the conveying tail ends of the two push rack belts (2) extend downward, and a linkage structure is used between the two rotating shafts to realize the synchronous rotation of the two rollers, and a servo motor (11) is installed on the rotating shaft on one of the rollers; The grinding jig comprises a jig block (8) and slide rails (81) symmetrically arranged on both sides of the jig block (8); a driven rack (811) is provided on the side wall of the slide rail (81); a bamboo spoon groove (82) is provided on the jig block (8); a rotating fixed rod (83) is provided on the upper surface of the jig block (8) next to the bamboo spoon groove (82); the slide rails (81) on both sides of the jig block (8) are correspondingly inserted into the inner groove and the driven rack (811) is engaged with the push rack belt (2); The first grinding mechanism (4), the second grinding mechanism (5) and the third grinding mechanism (6) are respectively arranged at equal intervals above the cross-shaped conveying trough channel (3) of the conveying platform. The first grinding mechanism (4), the second grinding mechanism (5) and the third grinding mechanism (6) each include an inverted shaped frame for installation. The first grinding assembly, the second grinding assembly and the third grinding assembly are respectively installed in the inverted shaped frame on the first grinding mechanism (4), the second grinding mechanism (5) and the third grinding mechanism (6). Two sets of locking cylinders (7) are symmetrically provided on the conveying platform inside the inverted shaped frame on the first grinding mechanism (4), the second grinding mechanism (5) and the third grinding mechanism (6) at the edge of the cross-shaped conveying groove channel (3). The cylinder shaft of the locking cylinder (7) can be inserted into the inner groove to squeeze the slide rail (81). A limiting cylinder (9) is embedded in the bottom wall of the cross-shaped conveying groove channel (3) at the tail end position below the inverted shaped frame on the first grinding mechanism (4), the second grinding mechanism (5) and the third grinding mechanism (6).
2. The environmentally friendly bamboo spoon polishing device according to claim 1, characterized in that: The linkage structure comprises a driving gear disc (21), a driven gear disc (22), a driving pulley (221) and a driven pulley (23); a rotating shaft on a roller corresponding to the servo motor (11) is sleeved with a driving gear disc (21) at the bottom end thereof, and a rotating shaft on another roller is sleeved with a driven pulley (23) at the bottom end thereof; the driven gear disc (22) and the driving pulley (221) are arranged up and down and their centers are on the same axis; the axis positions of the driven gear disc (22) and the driving pulley (221) are sleeved on a rotating rod; the driving gear disc (21) is meshed with the driven gear disc (22); and the driving pulley (221) and the driven pulley (23) are connected by a belt.
3. The environmentally friendly bamboo spoon polishing device according to claim 1, characterized in that: The first grinding assembly includes an installation box, a first push-down motor (41), a first push-down screw rod (42), a first push-down block (43), an intermediate grinding motor (44) and a first grinding head (45); the first push-down screw rod (42) is installed on the rotating shaft of the first push-down motor (41); the first push-down screw rod (42) spirally penetrates from the top center position of the first push-down block (43) to the inside; the bottom end of the first push-down block (43) is provided with an intermediate grinding motor (44) arranged downward, and the rotating shaft of the intermediate grinding motor (44) is sleeved with the first grinding head (45); the first push-down motor (41), the first push-down screw rod (42) and the first push-down block (43) are installed in the installation box, and the first push-down block (43) movably penetrates the lower half of the installation box.
4. The environmentally friendly bamboo spoon polishing device according to claim 1, characterized in that: The second grinding assembly includes a mounting box, a second push-down motor (51), a second push-down screw rod (52), a second push-down block (53), a swing motor (54), a two-side grinding motor (56) and a second grinding head (57). The second push-down motor (51) is provided with a second push-down screw rod (52) on the rotating shaft. The second push-down screw rod (52) is spirally passed through the center position of the top of the second push-down block (53) to the inside. The bottom end of the second push-down block (53) is provided with a downwardly arranged A swing motor (54) is provided, wherein a rotating mounting block (55) is sleeved on the rotating shaft of the swing motor (54), and two side grinding motors (56) inclined toward both sides are symmetrically installed on both sides of the rotating mounting block (55), and a second grinding head (57) is sleeved on the rotating shafts of the two side grinding motors (56), and the second push-down motor (51), the second push-down screw rod (52) and the second push-down block (53) are installed in the installation box, and the second push-down block (53) is movable through the lower half of the installation box.
5. The environmentally friendly bamboo spoon polishing device according to claim 1, characterized in that: The third grinding assembly includes a mounting box, a third push-down motor (61), a third push-down screw (62), a third push-down block (63), a second swing motor (64), a front and rear grinding motor (66) and a third grinding head (67). The third push-down motor (61) is provided with a third push-down screw (62) on its rotating shaft. The third push-down screw (62) is spirally passed through the top center position of the third push-down block (63) to the inside. The bottom end of the third push-down block (63) is provided with a second swing motor (64) arranged downward. A second swing motor (64) is provided with a second rotating mounting block (65) on the rotating shaft of the second swing motor (64), and front and rear grinding motors (66) tilted toward the front and rear are symmetrically installed on both sides of the second rotating mounting block (65), and a third grinding head (67) is provided on the rotating shafts of the two front and rear grinding motors (66), and the third push-down motor (61), the third push-down screw rod (62) and the third push-down block (63) are installed in the installation box, and the third push-down block (63) is movable through the lower half of the installation box.
6. The environmentally friendly bamboo spoon polishing device according to claim 1, characterized in that: A plurality of supporting rollers (100) are provided at equal intervals on the inner side of the pushing rack belt (2).