Material conveying device with gravity clamping function
The material transport device with gravity clamping function uses the material's own weight to fix and transport it, which solves the problem of low transport efficiency of rolled materials in the existing technology and realizes a highly efficient and adaptive material transport and unloading process.
Patent Information
- Application Number
- CN202610003715.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-05
- Publication Date
- 2026-04-10
AI Technical Summary
Existing methods for transporting rolled materials require additional constraints, resulting in low transport efficiency, especially for materials that are flexible but have poor rigidity.
The material handling device with gravity clamping function uses the material's own weight to lower the pallet, and the left and right clamping arms move closer to each other to clamp the material, achieving fixation without additional constraints.
It improves the transportation efficiency of rolled materials, realizes the adaptive alignment and controlled transportation of materials, and requires no additional power during transportation, making it easy to operate.
Smart Images
Figure CN121823148A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of transportation equipment, in particular to a material transportation device with gravity clamping function. BACKGROUND
[0002] For the transportation of the roll-shaped material with certain axial length and diameter and certain flexibility (but relatively poor rigidity), such as the steel wire roll or the disc shear cutting waste roll, it is usually necessary to constrain the outer contour of the material. For example, the existing constraint mode can adopt binding, packaging and the like. The existing constraint mode usually reduces the transportation efficiency of the material. SUMMARY
[0003] In order to improve the transportation efficiency of the above-mentioned material, the present application provides a material transportation device with gravity clamping function, which does not need to constrain the material separately, but can constrain and fix the material by using the weight of the material, thereby improving the transportation efficiency of the material.
[0004] The technical solution adopted by the embodiment of the present application to solve the technical problem is:
[0005] A material transportation device with gravity clamping function, comprising a gravity clamping vehicle, the gravity clamping vehicle comprising a vehicle body, a left clamping arm, a tray and a right clamping arm, the left clamping arm being located on the left side of the tray, the right clamping arm being located on the right side of the tray, the tray being connected to the vehicle body through an elastic component, when the material is placed on the tray, the gravity of the material can make the tray move downward, and the left clamping arm and the right clamping arm can approach each other and clamp the material.
[0006] The beneficial effects of the embodiment of the present application are:
[0007] 1. The high-efficiency transportation of the roll-shaped material with certain axial length and diameter, but poor rigidity and certain flexibility is realized.
[0008] 2. The material outer contour (such as the steel wire roll or the disc shear cutting waste roll) has the functions of alignment and self-adaptation.
[0009] 3. The transported material is in a controlled state during the transportation.
[0010] 4. After the transported material is transported to the position, the material is automatically unloaded or transported, and the operation is simple. BRIEF DESCRIPTION OF DRAWINGS
[0011] The drawings accompanying the specification of the present application form a part of the specification and serve to further illustrate the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application and do not constitute an improper limitation of the present application.
[0012] Figure 1is the main view schematic diagram of the left clamping arm and the right clamping arm of the material conveying device with gravity clamping function in the open state.
[0013] Figure 2 is the main view schematic diagram of the left clamping arm and the right clamping arm of the material conveying device with gravity clamping function in the closed state.
[0014] Figure 3 is the top view schematic diagram of the left clamping arm and the right clamping arm of the material conveying device with gravity clamping function in the open state.
[0015] Figure 4 is the top view schematic diagram of the vehicle body of the conveying vehicle and the gravity clamping vehicle.
[0016] Figure 5 is the schematic diagram of the double-layer track.
[0017] Figure 6 is the schematic diagram of the material conveying device with gravity clamping function in the unloading position.
[0018] The reference signs are explained as follows:
[0019] 1, conveying vehicle; 2, gravity clamping vehicle; 3, double-layer track; 4, conveying vehicle driving device; 5, material;
[0020] 11, front outer vehicle beam; 12, rear outer vehicle beam; 13, right vehicle axle of the conveying vehicle; 14, vehicle wheel of the conveying vehicle;
[0021] 21, vehicle body; 22, left clamping arm; 23, left connecting rod; 24, elastic component; 25, tray; 26, right connecting rod; 27, right clamping arm;
[0022] 31, upper track; 32, lower track;
[0023] 211, front inner vehicle beam; 212, rear inner vehicle beam; 213, left clamping vehicle axle; 214, right clamping vehicle axle; 215, containing area; 216, left clamping vehicle wheel; 217, right clamping vehicle wheel; 218, right rotating shaft;
[0024] 251, upper containing disc; 252, supporting column; 253, lower base;
[0025] 311, upper guide rail;
[0026] 321, lower guide rail; 322, left horizontal section; 323, right curved section. DETAILED DESCRIPTION
[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] For ease of understanding and description, the following description of the present invention uses absolute positional relationships. Unless otherwise specified, the directional term "above" indicates... Figure 1 The direction above, the directional word "down" indicates Figure 1 The lower side of the middle, the directional word "left" indicates Figure 1 The left side of the direction, the directional word "right" indicates Figure 1 The right-hand direction in the text, the directional word "front" indicates perpendicular to. Figure 1 The direction of the paper and the direction pointing inwards; the directional word "back" indicates perpendicular to. Figure 1 The orientation of the paper is pointed outwards from the viewpoint of the reader or user. This invention is described from the perspective of the reader or user, but the aforementioned directional terms should not be construed as limiting the scope of protection of this invention. Regarding the material, weight, size, angle, and parameters of the components, those skilled in the art can determine or replace them according to actual needs or a limited number of experiments.
[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the material transport device with gravity clamping function described in this embodiment includes a gravity clamping vehicle 2. The gravity clamping vehicle 2 includes a vehicle body 21, a left clamping arm 22, a pallet 25, and a right clamping arm 27. The left clamping arm 22 is located outside the left side of the pallet 25, and the right clamping arm 27 is located outside the right side of the pallet 25. The pallet 25 is connected to the vehicle body 21 through an elastic member 24. When the material 5 is placed on the pallet 25, the gravity of the material 5 can cause the pallet 25 to move downward, and the left clamping arm 22 and the right clamping arm 27 can approach each other and clamp the material 5.
[0030] The vehicle body 21 is a frame structure. The vehicle body 21 contains a front inner beam 211 and a rear inner beam 212 arranged at intervals. The vehicle body 21 also contains a left clamping axle 213 and a right clamping axle 214 arranged at intervals. The left clamping axle 213 and the right clamping axle 214 both pass through the front inner beam 211 and the rear inner beam 212. The front inner beam 211, the left clamping axle 213, the rear inner beam 212 and the right clamping axle 214 are connected in sequence to form a rectangular frame. The front inner beam 211, the rear inner beam 212, the left clamping axle 213 and the right clamping axle 214 form a receiving area 215. The pallet 25 is located in the receiving area 215.
[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the front inner vehicle beam 211 and the rear inner vehicle beam 212 both extend along the left-right direction, the left clamping vehicle axle 213 and the right clamping vehicle axle 214 both extend along the front-rear direction, the left clamping vehicle axle 213 is higher than the right clamping vehicle axle 214, the left clamping vehicle axle 213 and the right clamping vehicle axle 214 are spaced apart in the up-down direction, and the left clamping vehicle axle 213 is provided with a left clamping vehicle wheel 216 at each of the front and rear ends thereof, and the right clamping vehicle axle 214 is provided with a right clamping vehicle wheel 217 at each of the front and rear ends thereof.
[0032] The tray 25 comprises, from top to bottom, an upper containing disc 251, a support column 252 and a lower base 253. The material 5 can be placed on the upper containing disc 251 of the tray 25, and the support column 252 is guidingly connected to the vehicle body 21, for example, the front inner vehicle beam 211 and the rear inner vehicle beam 212 are both provided with guiding grooves, the support column 252 is matched and inserted into the guiding grooves, and the guiding grooves can guide the tray 25 to move up and down. The elastic members 24 are located on the front and rear sides of the tray 25, the two ends of the elastic member 24 on the front side are respectively connected and fixed to the front inner vehicle beam 211 and the lower base 253, the two ends of the elastic member 24 on the rear side are respectively connected and fixed to the rear inner vehicle beam 212 and the lower base 253, and the elastic member 24 can adopt a spring group comprising a plurality of parallel springs.
[0033] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , the vehicle body 21 further comprises a right rotating shaft 218, the left clamping vehicle axle 213 and the right rotating shaft 218 are located at the same height, the right rotating shaft 218 is spaced apart from the right clamping vehicle axle 214 in the up-down direction, the left clamping vehicle axle 213 and the right rotating shaft 218 are left-right symmetrical, the left clamping vehicle axle 213 penetrates through the left clamping arm 22, one end of the left clamping arm 22 is hingedly connected to the left end of the lower base 253 through the left connecting rod 23, the left clamping vehicle axle 213 is located between the two ends of the left clamping arm 22, and the right rotating shaft 218 penetrates through the right clamping arm 27, one end of the right clamping arm 27 is hingedly connected to the right end of the lower base 253 through the right connecting rod 26, and the right rotating shaft 218 is located between the two ends of the right clamping arm 27.
[0034] Specifically, the left clamping arm 22 and the right clamping arm 27 are left-right symmetrical and mirror images of each other, and both the left clamping arm 22 and the right clamping arm 27 can be substantially plate-shaped structures, one end of the left clamping arm 22 is connected to the upper end of the left connecting rod 23 through a rotating shaft, the lower end of the left connecting rod 23 is connected to the left end of the lower base 253 through a rotating shaft, one end of the right clamping arm 27 is connected to the upper end of the right connecting rod 26 through a rotating shaft, and the lower end of the right connecting rod 26 is connected to the right end of the lower base 253 through a rotating shaft. In the process of moving the tray 25 up and down, the left clamping arm 22 can be driven to rotate around the left clamping vehicle axle 213 through the left connecting rod 23, and the right clamping arm 27 can be driven to rotate around the right rotating shaft 218 through the right connecting rod 26, as shown in Figure 1 , Figure 2 ,Figure 3 、 Figure 4 as shown.
[0035] When the material 5 is placed on the tray 25, the self-gravity of the material 5 can make the tray 25 move downward, the elastic component 24 is heavily stretched, the other end of the left clamping arm 22 and the other end of the right clamping arm 27 can be close to each other and clamp the material 5, and the left clamping arm 22 and the right clamping arm 27 can be in an upright state; when the material 5 is removed from the tray 25, the restoring force of the elastic component 24 can make the tray 25 move upward, the elastic component 24 is lightly stretched, the other end of the left clamping arm 22 and the other end of the right clamping arm 27 can be away from each other and release the material 5, and the left clamping arm 22 and the right clamping arm 27 can be in a horizontal state.
[0036] As shown in Figure 1 、 Figure 2 , when the left clamping arm 22 and the right clamping arm 27 are in a closed state, the tray 25 is in a lower limit position, the elastic component 24 is heavily stretched, the left clamping arm 22 and the right clamping arm 27 are in an upright state, and the other end of the left clamping arm 22 and the other end of the right clamping arm 27 are close to each other; when the left clamping arm 22 and the right clamping arm 27 are in an open state, the tray 25 is in an upper limit position, the elastic component 24 is lightly stretched, the left clamping arm 22 and the right clamping arm 27 are in a horizontal state, and the other end of the left clamping arm 22 and the other end of the right clamping arm 27 are away from each other.
[0037] As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 , the material conveying device with gravity clamping function further comprises a conveying vehicle 1, the conveying vehicle 1 is a frame structure, the conveying vehicle 1 contains front and rear outer vehicle beams 11 and 12 which are arranged at intervals, the front and rear outer vehicle beams 11 and 12 both extend along the left-right direction, the gravity clamping vehicle 2 is located between the front and rear outer vehicle beams 11 and 12, the front and rear outer vehicle beams 11, 12, the front and rear inner vehicle beams 211 and 212 are arranged in sequence from front to back, the left clamping vehicle shaft 213 penetrates the left ends of the front and rear outer vehicle beams 11 and 12, the conveying vehicle 1 and the gravity clamping vehicle 2 share the left clamping vehicle shaft 213, the conveying vehicle 1 further contains a conveying vehicle right shaft 13 which extends along the front and rear direction, the conveying vehicle right shaft 13 penetrates the right ends of the front and rear outer vehicle beams 11 and 12, the conveying vehicle right shaft 13 and the left clamping vehicle shaft 213 are located at the same height, the gravity clamping vehicle 2 and the conveying vehicle right shaft 13 are arranged at intervals left and right, and the front and rear ends of the conveying vehicle right shaft 13 are both provided with conveying vehicle wheels 14.
[0038] As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5As shown in the figure, the material conveying device with gravity clamping function further comprises a double-layer track 3, the double-layer track 3 comprises an upper layer track 31 and a lower layer track 32 arranged in layers, the upper layer track 31 comprises two upper layer guide rails 311 arranged in front and back, the two upper layer guide rails 311 extend along the left-right direction, the two upper layer guide rails 311 each comprise an upper guide groove, the upper guide grooves of the two upper layer guide rails 311 face each other, the lower layer track 32 comprises two lower layer guide rails 321 arranged in front and back, the two lower layer guide rails 321 each comprise a lower guide groove, the lower guide grooves of the two lower layer guide rails 321 also face each other, and the two lower layer guide rails 321 each comprise a left horizontal section 322 and a right curved section 323 connected in left and right directions, the left horizontal section 322 extends along the left-right direction, the upper layer guide rails 311 and the left horizontal section 322 are arranged in parallel in layers, and the right curved section 323 is in an arc structure, the left end of the right curved section 323 is connected with the right end of the left horizontal section 322, and the right end of the right curved section 323 is bent downward.
[0039] As shown in the figure, Figure 1 , Figure 2 , Figure 5 As shown in the figure, the left clamping trolley wheel 216 and the conveying trolley wheel 14 are connected with the upper layer track 31, the left clamping trolley wheel 216 and the conveying trolley wheel 14 are located in the upper guide groove of the upper layer track 31, and the upper layer track 31 can guide the movement of the left clamping trolley wheel 216 and the conveying trolley wheel 14. The right clamping trolley wheel 217 is connected with the lower layer track 32, the right clamping trolley wheel 217 is located in the lower guide groove of the lower layer track 32, and the lower layer track 32 can guide the movement of the right clamping trolley wheel 217.
[0040] During the movement of the conveying trolley 1 and the gravity clamping trolley 2 along the double-layer track 3 from left to right, when the right clamping trolley wheel 217 moves to the right curved section 323, the right curved section 323 guides the walking arc line of the right clamping trolley shaft 214, the right side of the tray 25 can be inclined downward, the pressure of the material 5 on the tray 25 is reduced, and the component 24 is restored. The force component (toward the right lower direction) of the gravity of the material 5 and the elastic part 24 can make the material 5 roll to the right and knock the right clamping arm 27 until it leaves the gravity clamping trolley 2, thereby realizing the unloading function.
[0041] As shown in the figure, Figure 1 , Figure 2 , Figure 6 The material conveying device with gravity clamping function further comprises a conveying trolley driving device 4, the conveying trolley driving device 4 is connected with the conveying trolley 1, and the conveying trolley driving device 4 can drive the conveying trolley 1 and the gravity clamping trolley 2 to move left and right. The conveying trolley driving device 4 is located on the left and right sides of the conveying trolley 1, and the conveying trolley driving device 4 comprises a traction mechanism and a transmission component connected in sequence, and considering long-distance transportation, the transmission component can adopt a metal chain or a steel wire rope.
[0042] The left end of the transmission part of the transport vehicle driving device 4 is fixedly connected with the left clamping axle 213 of the transport vehicle 1, and the right end of the transmission part of the transport vehicle driving device 4 is fixedly connected with the right axle 13 of the transport vehicle 1. The traction mechanism winding transmission part of the left transport vehicle driving device 4 can drive the transport vehicle 1 and the gravity clamping vehicle 2 to move synchronously to the left, and the traction mechanism winding transmission part of the right transport vehicle driving device 4 can drive the transport vehicle 1 and the gravity clamping vehicle 2 to move synchronously to the right.
[0043] The working process of the material transport device with the gravity clamping function will be introduced below.
[0044] Step 1: The transport vehicle 1 and the gravity clamping vehicle 2 move to the left to the material receiving position, the left clamping arm 22 and the right clamping arm 27 are in the open state, and the material receiving position is shown in FIG. 2. Figure 1
[0045] Step 2: The material 5 is placed on the tray 25, the self-gravity of the material 5 drives the tray 25 to move downward, the other end of the left clamping arm 22 and the other end of the right clamping arm 27 are close to each other and clamp and fix the material 5, and the bearing object (the material 5) can be aligned by the clamping arms, which is beneficial to the alignment of the loose material with poor rigidity and irregular outer shape. The material 5 does not need to be fixed additionally, and the left clamping arm 22 and the right clamping arm 27 are in the closed state, as shown in FIG. 3. Figure 2 The left clamping arm 22 and the right clamping arm 27 can stably clamp and constrain the material, thereby ensuring the stability of the transported object.
[0046] Step 3: The transport vehicle 1 and the gravity clamping vehicle 2 move to the right to the material unloading position, the right curved section 323 is located at the material unloading position, the right side of the tray 25 can be inclined downward, and the component 24 and the self-gravity of the material 5 jointly drive the material 5 to roll to the right and knock the right clamping arm 27 until the material 5 leaves the gravity clamping vehicle 2, thereby achieving automatic unloading. The left clamping arm 22 and the right clamping arm 27 are in the open state, as shown in FIG. 4. Figure 6
[0047] In the above embodiment, the material 5 is clamped and fixed by its own weight, which is suitable for the transport of the flexible roll-shaped material with poor rigidity, and the loose material with a non-strict regular shape can be aligned by the clamping arms and the tray.
[0048] In the above embodiment, the material is clamped by its own weight during the transport, without the need for additional power, and the clamping force is proportional to the self-weight, thereby reducing the influence of inertial force during the transport.
[0049] In the above embodiment, the double-vehicle and double-track form can realize the relative independence of the traction and the inclined unloading of the two vehicles, the material dumping is controllable and flexible, and the traction mode is simple.
[0050] The above merely describes specific embodiments of the present application and cannot be used to limit the scope of the application, so replacement of equivalent components or equivalent changes and modifications made within the scope of protection of the present application should still fall within the scope of the present application. In addition, the technical features in the present application can be freely combined between technical features and technical features, technical features and technical solutions, technical solutions and technical solutions, embodiments and embodiments.
Claims
1. A material conveying device with gravity clamping function, characterized in that, The material transport device with gravity clamping function includes a gravity clamping vehicle (2). The gravity clamping vehicle (2) includes a vehicle body (21), a left clamping arm (22), a pallet (25), and a right clamping arm (27). The left clamping arm (22) is located on the left side of the pallet (25), and the right clamping arm (27) is located on the right side of the pallet (25). The pallet (25) is connected to the vehicle body (21) through an elastic member (24). When the material (5) is placed on the pallet (25), the gravity of the material (5) can cause the pallet (25) to move downward. The left clamping arm (22) and the right clamping arm (27) can approach each other and clamp the material (5).
2. The material conveying device with gravity clamping function according to claim 1, characterized in that, The vehicle body (21) includes a front inner beam (211) and a rear inner beam (212) spaced apart front and rear. The vehicle body (21) also includes a left clamping axle (213) and a right clamping axle (214) spaced apart left and right. The left clamping axle (213) and the right clamping axle (214) both pass through the front inner beam (211) and the rear inner beam (212). The front inner beam (211), the rear inner beam (212), the left clamping axle (213) and the right clamping axle (214) form a receiving area (215), and the pallet (25) is located in the receiving area (215).
3. The material conveying device with gravity clamping function according to claim 2, characterized in that, The front inner beam (211) and the rear inner beam (212) both extend in the left and right direction. The left clamping axle (213) and the right clamping axle (214) both extend in the front and rear direction. The left clamping axle (213) is higher than the right clamping axle (214). There is a gap between the left clamping axle (213) and the right clamping axle (214) in the vertical direction. The left clamping axle (213) has a left clamping wheel (216) at both ends, and the right clamping axle (214) has a right clamping wheel (217) at both ends.
4. The material conveying device with gravity clamping function according to claim 3, characterized in that, The pallet (25) includes an upper holding tray (251), a support column (252) and a lower base (253) connected from top to bottom. The elastic component (24) is located on the front and rear sides of the pallet (25). The two ends of the elastic component (24) on the front side are connected and fixed to the front inner beam (211) and the lower base (253) respectively. The two ends of the elastic component (24) on the rear side are connected and fixed to the rear inner beam (212) and the lower base (253) respectively.
5. The material conveying device with gravity clamping function according to claim 4, characterized in that, The vehicle body (21) also includes a right swivel (218), a left clamping axle (213) and a right swivel (218) at the same height, the left clamping axle (213) passes through the left clamping arm (22), one end of the left clamping arm (22) is hinged to the left end of the lower base (253) through the left connecting rod (23), the left clamping axle (213) is located between the two ends of the left clamping arm (22), the right swivel (218) passes through the right clamping arm (27), one end of the right clamping arm (27) is hinged to the right end of the lower base (253) through the right connecting rod (26), the right swivel (218) is located between the two ends of the right clamping arm (27).
6. The material conveying device with gravity clamping function according to claim 5, characterized in that, When the material (5) is placed on the tray (25), the other end of the left clamping arm (22) and the other end of the right clamping arm (27) can approach each other and clamp the material (5), and both the left clamping arm (22) and the right clamping arm (27) can be in an upright state; when the material (5) leaves the tray (25), the restoring force of the elastic component (24) can make the tray (25) move upward, and the other end of the left clamping arm (22) and the other end of the right clamping arm (27) can move away from each other and release the material (5), and both the left clamping arm (22) and the right clamping arm (27) can be in a horizontal state.
7. The material conveying device with gravity clamping function according to claim 3, characterized in that, The material transport device with gravity clamping function also includes a transport vehicle (1). The transport vehicle (1) has a front outer beam (11) and a rear outer beam (12) arranged at intervals. Both the front outer beam (11) and the rear outer beam (12) extend in the left and right directions. The gravity clamping vehicle (2) is located between the front outer beam (11) and the rear outer beam (12). The left clamping axle (213) passes through the left end of the front outer beam (11) and the left end of the rear outer beam (12). The vehicle (1) also includes a right axle (13) of the transport vehicle. The right axle (13) of the transport vehicle extends in the front-rear direction. The right axle (13) of the transport vehicle passes through the right end of the front outer beam (11) and the right end of the rear outer beam (12). The right axle (13) of the transport vehicle and the left clamping axle (213) are at the same height. The gravity clamping vehicle (2) and the right axle (13) of the transport vehicle are spaced apart on the left and right sides. Both ends of the right axle (13) of the transport vehicle are equipped with transport vehicle wheels (14).
8. The material conveying device with gravity clamping function according to claim 7, characterized in that, The material transport device with gravity clamping function also includes a double-layer track (3). The double-layer track (3) includes an upper track (31) and a lower track (32) arranged vertically. The upper track (31) includes two upper guide rails (311) arranged at intervals. Both upper guide rails (311) extend in the left and right direction. The lower track (32) includes two lower guide rails (321) arranged at intervals. Both lower guide rails (321) include a left horizontal section (322) and a right curved section (323) connected in the left and right directions. The left horizontal section (322) extends in the left and right direction. The right end of the right curved section (323) bends downward. The left clamping wheel (216) and the transport wheel (14) are both connected to the upper track (31). The right clamping wheel (217) is connected to the lower track (32).
9. The material conveying device with gravity clamping function according to claim 8, characterized in that, As the transport vehicle (1) and the gravity clamping vehicle (2) move from left to right along the double-layer track (3), when the right clamping vehicle wheel (217) moves to the right curved section (323), the right side of the pallet (25) can tilt downwards. The component of gravity on the material (5) and the restoring force of the elastic component (24) can make the material (5) roll to the right and knock open the right clamping arm (27) until it leaves the gravity clamping vehicle (2).
10. The material conveying device with gravity clamping function according to claim 7, characterized in that, The material transport device with gravity clamping function also includes a transport vehicle drive device (4), which is connected to the transport vehicle (1). The transport vehicle drive device (4) can drive the transport vehicle (1) and the gravity clamping vehicle (2) to move left and right.