Biased heavy load moving platform guided by double-wheel-driven lateral slide rails

Abstract

The application discloses a double-wheel driving lateral slide rail guiding bias heavy load moving platform, which slides on a slide rail. The bias heavy load moving platform comprises a frame body, a servo motor, a brake device and a mounting flange. An opening is formed on the right side of the frame body, a support structure of the slide rail is fixed to the slide rail and passes through the opening, a plurality of limit wheels are fixed to the frame body at positions opposite to the slide rail, a main transmission shaft and an auxiliary transmission shaft are rotationally connected in the frame body, driving wheels are fixed to the main transmission shaft and the auxiliary transmission shaft, the servo motor drives the driving wheels on the main transmission shaft and the auxiliary transmission shaft to slide on the slide rail through the main transmission shaft and the auxiliary transmission shaft, the brake device is fixed to the frame body, the mounting flange is located below the frame body and is fixed to the frame body, and the mounting flange is located on the left side of a vertical surface of the slide rail. The bias heavy load mechanism design is adopted, the working strength of the limit wheels on the opening side is ensured, the slide rail is prevented from derailing, and the operation is more stable.

Description

Technical Field

[0001] This invention belongs to the field of track-based mobile platform technology, and specifically relates to an offset heavy-duty mobile platform with dual-wheel drive and lateral guide rails. Background Technology

[0002] In existing technologies, most rail-mounted mobile platforms use a single motor or ball screw drive to provide forward power, which is prone to instability and swaying during movement. Furthermore, most of these platforms have bottom openings, which cannot meet the requirement of hanging loads underneath the platform. In short, existing technologies for platforms moving on tracks suffer from unstable operation, inability to carry heavy equipment, and failure to meet the requirement of lateral openings. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide an offset heavy-duty mobile platform with dual-wheel drive and lateral guide rail. The offset heavy-duty mobile platform adopts dual-wheel balanced drive and a lateral opening design that can avoid the guide rail support part. It adopts an offset heavy-duty mechanism design to ensure the stable operation of the mobile platform.

[0004] The objective of this invention is achieved through the following technical solution.

[0005] A dual-wheel drive, laterally guided offset heavy-duty mobile platform is disclosed. The offset heavy-duty mobile platform slides on the slide rails and includes: a frame, a servo motor, a braking device, and a mounting flange.

[0006] The slide rail passes through the front and rear of the frame and forms an opening on the right side of the frame. The support structure of the slide rail is fixed to the slide rail and passes through the opening. The slide rail has an "I" shaped cross section along its width direction. The frame is fixed with multiple limiting wheels at positions opposite to the "I" shaped edge of the slide rail. Each limiting wheel has a recessed groove formed on its circumferential surface, and the "I" shaped edge is embedded in the recessed groove.

[0007] A main drive shaft and an auxiliary drive shaft are rotatably connected within the frame. The main drive shaft and the auxiliary drive shaft are located above the slide rail. The length directions of the main drive shaft and the auxiliary drive shaft are perpendicular to the slide rail. A drive wheel is fixedly mounted on each of the main drive shaft and the auxiliary drive shaft. The servo motor is fixedly mounted on the frame. The servo motor drives the drive wheel on it to slide on the slide rail through the main drive shaft and the auxiliary drive shaft.

[0008] The braking device is fixed on the frame and is used to decelerate the offset heavy-duty mobile platform on the slide rail.

[0009] The mounting flange is located below the frame and is fixed to the frame. The mounting flange is located on the left side of the vertical plane of the slide rail.

[0010] In the above technical solution, anti-collision devices are installed at the front and / or rear of the frame.

[0011] In the above technical solution, snowplows for removing snow from the surface of the slide rail are installed at the front and / or rear of the frame.

[0012] In the above technical solution, a first synchronous pulley is fixedly mounted on the main drive shaft and the auxiliary drive shaft, a second synchronous pulley is fixedly mounted on the main drive shaft, a third synchronous pulley is fixedly mounted on the output shaft of the servo motor, a first synchronous belt is installed on the third synchronous pulley and the second synchronous pulley, and a second synchronous belt is installed on the first synchronous pulleys on the main drive shaft and the auxiliary drive shaft.

[0013] In the above technical solution, the braking device includes: an upper mounting plate, a lower mounting plate, a friction plate, an electric push rod, and a linear bearing. The number of linear bearings is at least one. The upper mounting plate is fixed to the frame, and the lower mounting plate is parallel to the upper mounting plate. The linear bearing and the electric push rod are arranged in parallel and are both fixed between the lower mounting plate and the upper mounting plate, so that the lower mounting plate can move along the length direction of the electric push rod. The friction plate is fixed to the lower surface of the lower mounting plate, and the electric push rod extends to contact the surface of the friction plate with the surface of the slide rail.

[0014] In the above technical solution, an anti-derailment assembly is fixedly installed on both the frame above and below the opening. Each anti-derailment assembly includes a first bracket and a wheel rotatably mounted on the first bracket. The first bracket is fixedly installed to the frame. The wheel in the anti-derailment assembly fixedly installed on the frame above the opening contacts and slides on the lower surface of the slide rail top plate. The wheel in the anti-derailment assembly fixedly installed on the frame below the opening contacts and slides on the upper surface of the slide rail bottom plate. The anti-derailment assembly located above the opening further includes a first vertical plate fixedly installed on the first bracket. The first vertical plate is located to the right of the top plate of the slide rail, and the distance between the first vertical plate and the edge of the slide rail is 8-15mm. The anti-derailment assembly located below the opening also includes: a second vertical plate and a horizontal plate. The second vertical plate is located to the right of the bottom plate of the slide rail and is fixed to the first bracket. The horizontal plate is located below the slide rail and is fixed to the second vertical plate. The included angle between the second vertical plate and the horizontal plate is 90°. The distance between the second vertical plate and the edge of the slide rail is 8-15mm, and the distance between the horizontal plate and the bottom plate of the slide rail is 8-15mm.

[0015] The above technical solution also includes: an elastic support wheel, which is rotatably connected to the frame and located below the slide rail. The top of the elastic support wheel contacts the bottom surface of the slide rail and can slide on the slide rail.

[0016] In the above technical solution, there are two elastic support wheels, which are located on both sides of the vertical plane of the slide rail and are staggered in the front-to-back direction.

[0017] The above technical solution also includes a tensioning device for adjusting the tension of the second synchronous belt, the tensioning device being fixedly mounted on the frame.

[0018] In the above technical solution, the tensioning device includes: a tensioning wheel, a tensioning wheel bracket, a wire lever, and a third bracket. The third bracket is used to fix it to the frame. The wire lever passes through the third bracket and is fastened to the third bracket by bolts. The tensioning wheel bracket is threadedly connected to the wire lever. The tensioning wheel is rotatably connected to the tensioning wheel bracket.

[0019] The above technical solution also includes a first infrared sensor and a second infrared sensor. Both the first infrared sensor and the second infrared sensor are installed on the frame. The first infrared sensor measures the first relevant marker on the slide rail to locate the position of the biased heavy-duty mobile platform on the slide rail. The second infrared sensor measures the second relevant marker on the surface of the slide rail.

[0020] In the above technical solution, the plane on which the limiting wheel is located is horizontal, and the plane on which the wheel body is located is vertical.

[0021] In the above technical solution, the slide rail has four "I"-shaped edges, which are the four ends of the "I"-shaped cross-section of the slide rail.

[0022] The beneficial effects of this invention are as follows:

[0023] (1) The present invention adopts a lateral slide rail guide mechanism, which can ensure that the offset heavy-duty mobile platform always travels in a straight line along the slide rail. In addition, the offset heavy-duty mobile platform has a "C"-shaped open structure. Multiple limit wheels are fixed at the positions of the frame body opposite to the "I"-shaped edge of the slide rail to prevent the offset heavy-duty mobile platform from derailing. It has the advantages of high safety and reliable operation.

[0024] This invention employs an offset heavy-duty mechanism design, in which the mounting flange is installed at a distance from the center of the offset heavy-duty mobile platform to the non-open side. When a heavy load is mounted, the offset heavy-duty mobile platform tends to rotate counterclockwise toward the open side, ensuring the working strength of the limit wheel on the open side and preventing derailment, thereby making the operation of the offset heavy-duty mobile platform more stable.

[0025] (2) The present invention designs an elastic support wheel at the bottom of the offset heavy load mobile platform. When the offset heavy load mobile platform is loaded with a large weight load, the elastic support wheel can elastically contract under the action of the spring to ensure that the offset heavy load mobile platform is always wrapped around the slide rail, thereby ensuring the stable operation of the offset heavy load mobile platform.

[0026] (3) This invention adopts a dual-wheel balanced drive with a main and auxiliary transmission mechanism. Power is transmitted through the first and second synchronous belts, which is highly efficient and stable in operation. It can be quickly installed and disassembled and is also convenient for maintenance. With dual-wheel balanced drive, even if there is swaying due to the heavy load, the two drive wheels will always be in contact with the slide rail (H-shaped rail), thus ensuring the smooth operation of the offset heavy-duty mobile platform. Attached Figure Description

[0027] Figure 1 This is a schematic diagram showing the position of the offset heavy-duty mobile platform relative to the slide rail.

[0028] Figure 2 A 3D view of an offset heavy-load mobile platform;

[0029] Figure 3 Left view of the biased heavy-load mobile platform;

[0030] Figure 4 Left view of the offset heavy-load mobile platform (with some frame parts hidden);

[0031] Figure 5 Right view of the biased heavy-load mobile platform;

[0032] Figure 6 This is a structural diagram of the frame in an offset heavy-duty mobile platform;

[0033] Figure 7 A cross-sectional view of an offset heavy-load mobile platform;

[0034] Figure 8 This is a schematic diagram of the main drive shaft in an offset heavy-duty mobile platform.

[0035] Figure 9 This is a schematic diagram of the auxiliary drive shaft in an offset heavy-duty mobile platform.

[0036] Figure 10 This is a schematic diagram of the braking device in an offset heavy-duty mobile platform.

[0037] Figure 11 This is a schematic diagram of the anti-derailment component located above the opening in an offset heavy-duty mobile platform.

[0038] Figure 12 This is a schematic diagram of the tensioning device in an offset heavy-duty mobile platform.

[0039] Figure 13 This is a structural diagram of the anti-derailment assembly and limit wheel located below the opening in an offset heavy-duty mobile platform;

[0040] Figure 14 A 3D view of an offset heavy-load mobile platform.

[0041] Among them, 1 is the frame, 2 is the slide rail, 2-1 is the support structure of the slide rail, 3 is the servo motor, 4 is the braking device, 4-1 is the upper mounting plate, 4-2 is the lower mounting plate, 4-3 is the friction plate, 4-4 is the electric push rod, 4-5 is the linear bearing, 5 is the limit wheel, 6 is the main drive shaft, 7 is the auxiliary drive shaft, 8 is the drive wheel, 9 is the mounting flange, 10 is the bearing support, 11 is the first synchronous belt pulley, 12 is the second synchronous belt pulley, 13 is the third synchronous belt pulley, 14 is the first synchronous belt, and 15 is the second synchronous belt pulley. Two synchronous belts, 16 is the anti-derailment assembly, 16-1 is the first bracket, 16-2 is the wheel body, 16-3 is the first vertical plate, 16-4 is the second vertical plate, 16-5 is the horizontal plate, 17 is the elastic support wheel, 18 is the anti-collision device, 19 is the tensioning device, 19-1 is the tensioning wheel, 19-2 is the tensioning wheel bracket, 19-3 is the screw lever, 19-4 is the third bracket, 20 is the first infrared sensor, 21 is the second infrared sensor, 22 is the rain cover, 23 is the lifting ring, and 24 is the snowplow blade. Detailed Implementation

[0042] The technical solution of the present invention will be further described below with reference to specific embodiments.

[0043] Example 1

[0044] like Figure 1-14 As shown, a dual-wheel drive, laterally guided offset heavy-duty mobile platform slides on a slide rail 2. The offset heavy-duty mobile platform includes: a frame 1, a servo motor 3, a braking device 4, and a mounting flange 9.

[0045] The slide rail 2 passes through the front and back of the frame 1, forming an opening on the right side of the frame 1. The support structure 2-1 of the slide rail 2 is fixed to the slide rail 2 and passes through the opening. The cross-section of the slide rail 2 along its width direction is "I". The frame 1 is fixed with multiple limiting wheels 5 at positions opposite to the "I" edge of the slide rail 2 (the "I" edge of the slide rail is four, which are the four ends of the "I" cross-section of the slide rail 2). The plane where the limiting wheels 5 are located is horizontal. Each limiting wheel 5 has a recessed groove formed on its circumference, and the "I" edge is embedded in the recessed groove.

[0046] A main drive shaft 6 and an auxiliary drive shaft 7 are rotatably connected within the frame 1. The main drive shaft 6 and the auxiliary drive shaft 7 are located above the slide rail 2. The length directions of the main drive shaft 6 and the auxiliary drive shaft 7 are perpendicular to the slide rail 2. Each of the main drive shaft 6 and the auxiliary drive shaft 7 is fixedly mounted with a drive wheel 8 (the drive wheel 8 can be fixed to the main drive shaft 6 / auxiliary drive shaft 7 by a flat key and a set screw). The servo motor 3 is fixedly mounted on the frame 1. The servo motor 3 drives the drive wheel 8 on it to slide on the slide rail 2 through the main drive shaft 6 and the auxiliary drive shaft 7.

[0047] Braking device 4 is fixed on frame 1 and used to slow down the offset heavy-duty mobile platform on slide rail 2;

[0048] The mounting flange 9 is located below the frame 1 and is fixed to the frame 1. The mounting flange 9 is located on the left side of the vertical surface of the slide rail 2.

[0049] Preferably, the main drive shaft 6 and the auxiliary drive shaft 7 can each be mounted on the frame 1 via bearing supports 10 to achieve a rotatable connection within the frame 1.

[0050] The working principle of the dual-wheel drive, lateral guide rail-guided offset heavy-duty mobile platform is as follows:

[0051] 1. The operation method of the offset heavy-duty mobile platform is as follows: the servo motor 3 drives the drive wheel 8 on it to slide on the slide rail 2 through the main drive shaft 6 and the auxiliary drive shaft 7, so that the offset heavy-duty mobile platform can run on the slide rail 2. Multiple limit wheels 5 are fixed at the positions opposite to the "I"-shaped edges of the frame 1 and the slide rail 2, which provide guidance and limit for the movement of the offset heavy-duty mobile platform and ensure that the offset heavy-duty mobile platform always moves along the slide rail 2. When the mounting flange 9 of the offset heavy-duty mobile platform is loaded with heavy equipment or goods, since the mounting flange 9 is located on the left side of the vertical plane of the slide rail 2, this offset heavy-duty design can ensure that the offset heavy-duty mobile platform runs smoothly on the slide rail 2.

[0052] 2. The method for stopping the operation of the offset heavy-duty mobile platform is as follows: the brake device 4 fixed on the frame 1 reduces the speed of the offset heavy-duty mobile platform on the slide rail 2 to stop its operation.

[0053] Example 2

[0054] like Figure 7-9As shown, based on Embodiment 1, the main drive shaft 6 and the auxiliary drive shaft 7 are each fixedly equipped with a first synchronous pulley 11 (the first synchronous pulley 11 can be fixed to the main drive shaft 6 / auxiliary drive shaft 7 by a flat key and a set screw), the main drive shaft 6 is fixedly equipped with a second synchronous pulley 12 (the second synchronous pulley 12 can be fixed to the main drive shaft 6 by a flat key and a set screw), the output shaft of the servo motor 3 is fixedly equipped with a third synchronous pulley 13, the third synchronous pulley 13 and the second synchronous pulley 12 are equipped with a first synchronous belt 14, and the first synchronous pulley 11 on the main drive shaft 6 and the auxiliary drive shaft 7 are equipped with a second synchronous belt 15.

[0055] The power of the servo motor 3 is transmitted to the main drive shaft 6 via the first synchronous belt 14, and the power of the main drive shaft 6 is transmitted to the auxiliary drive shaft 7 via the second synchronous belt 15, providing power for the offset heavy-duty mobile platform to move on the slide rail 2, thus realizing the dual-wheel drive of the offset heavy-duty mobile platform.

[0056] Example 3

[0057] like Figure 7 and Figure 10 As shown, based on Embodiment 1 or 2, the braking device 4 includes: an upper mounting plate 4-1, a lower mounting plate 4-2, a friction plate 4-3, an electric push rod 4-4, and a linear bearing 4-5, wherein the number of linear bearings 4-5 is at least one, such as... Figure 10 As shown, there are two mounting plates. The upper mounting plate 4-1 is fixed to the frame 1, and the lower mounting plate 4-2 is parallel to the upper mounting plate 4-1. The linear bearing 4-5 and the electric push rod 4-4 are arranged in parallel and fixed between the lower mounting plate 4-2 and the upper mounting plate 4-1, so that the lower mounting plate 4-2 can move along the length direction of the electric push rod 4-4. The friction plate 4-3 is fixed to the lower surface of the lower mounting plate 4-2. The electric push rod 4-4 extends the friction plate 4-3 to contact the surface of the slide rail 2, thereby realizing the deceleration of the offset heavy-duty moving platform on the slide rail 2.

[0058] Example 4

[0059] like Figure 11As shown, based on embodiment 3, an anti-derailment component 16 is fixedly installed on the frame 1 above the opening and the frame 1 below the opening. The anti-derailment component 16 includes: a first bracket 16-1 and a wheel 16-2 rotatably mounted on the first bracket 16-1. The plane where the wheel 16-2 is located is vertically arranged. The first bracket 16-1 is fixedly mounted to the frame 1. The wheel 16-2 in the anti-derailment assembly 16 fixedly mounted on the frame 1 above the opening contacts and slides on the lower surface of the top plate of the slide rail 2. The wheel 16-2 in the anti-derailment assembly 16 fixedly mounted on the frame 1 below the opening contacts and slides on the upper surface of the bottom plate of the slide rail 2. The anti-derailment assembly 16 above the opening also includes a first vertical plate 16-3 fixedly mounted to the first bracket 16-1. The first vertical plate 16-3 is located to the right of the top plate of the slide rail 2, and the distance between the first vertical plate 16-3 and the edge of the slide rail 2 closest to it is 10mm. The function of the first vertical plate 16-3 is to contact and support the slide rail when the offset heavy-duty mobile platform shakes during operation, preventing derailment and potential safety hazards. The anti-derailment assembly 16 below the opening also includes: a second vertical plate 16-4 and a horizontal plate 16-5. The second vertical plate 16-4 is located to the right of the bottom plate of the slide rail 2 and is fixedly mounted to the first bracket 16-1. The horizontal plate 16-5 is located below the slide rail 2 and is fixedly mounted to the second vertical plate 16-4. The included angle between the second vertical plate 16-4 and the horizontal plate 16-5 is 90°. The distance between the second vertical plate 16-4 and the edge of the slide rail 2 closest to it is 10mm. The distance between the horizontal plate 16-5 and the bottom plate of the slide rail 2 is 10mm. The function of the second vertical plate 16-4 and the horizontal plate 16-5 is to contact and support the slide rail when the offset heavy-duty mobile platform shakes or when the heavy object has a counterclockwise rotation tendency, so as to prevent derailment and safety hazards.

[0060] During the operation of the offset heavy-duty mobile platform, if the offset heavy-duty mobile platform exhibits a torsional tendency perpendicular to the track direction, the anti-derailment component 16 can protect the offset heavy-duty mobile platform.

[0061] Example 5

[0062] like Figure 4 and 6 As shown, based on embodiment 4, it further includes: an elastic support wheel 17, which is rotatably connected to the frame 1 and located below the slide rail 2. The top of the elastic support wheel 17 contacts the bottom surface of the slide rail 2 and can slide on the slide rail 2. There are two elastic support wheels 17, which are located on both sides of the vertical plane of the slide rail 2 and are staggered in the front-back direction.

[0063] The elastic support wheel 17 is always in contact with the lower surface of the slide rail, providing flexible limit for the offset heavy-duty mobile platform, so that the offset heavy-duty mobile platform is always enveloped on the slide rail 2 when moving.

[0064] Example 6

[0065] like Figure 2 As shown, based on embodiment 5, anti-collision devices 18 are installed on the front and / or rear of the frame 1. The anti-collision devices 18 can be rubber blocks.

[0066] Snowplows 24 for removing snow from the surface of the slide rail 2 are installed at the front and / or rear of the frame 1.

[0067] like Figure 3 and Figure 12 As shown, the offset heavy-duty mobile platform also includes a tensioning device 19 for adjusting the tension of the second synchronous belt 15. The tensioning device 19 is fixedly mounted on the frame 1. For example, the tensioning device 19 includes a tension wheel 19-1, a tension wheel bracket 19-2, a lever 19-3, and a third bracket 19-4. The third bracket 19-4 is fixedly mounted to the frame 1. The lever 19-3 passes through the third bracket 19-4 and is fastened to the third bracket 19-4 with bolts. The tension wheel bracket 19-2 is threadedly connected to the lever 19-3. The tension wheel 19-1 is rotatably connected to the tension wheel bracket 19-2. When the second synchronous belt 15 becomes weak, the lever 19-3 can be rotated to cause the tension wheel bracket 19-2 and the lever 19-3 to rotate relative to each other, adjusting the position of the tension wheel bracket 19-2 on the lever 19-3, thereby adjusting the degree of tension of the tension wheel 19-1 on the second synchronous belt 15.

[0068] Example 7

[0069] Based on embodiment 6, it also includes a first infrared sensor 20 and a second infrared sensor 21. Both the first infrared sensor 20 and the second infrared sensor 21 are mounted on the frame 1. The first infrared sensor 20 measures the first relevant marker of the slide rail 2 to locate the position of the biased heavy-duty mobile platform on the slide rail 2. For example, the first relevant marker can be the support structure 2-1 of the slide rail 2. After the controller obtains the signal of the support structure 2-1 of the slide rail 2 acquired by the first infrared sensor 20, it counts the signal to determine the position of the biased heavy-duty mobile platform on the slide rail 2.

[0070] The second infrared sensor 21 measures the second relevant marker on the surface of the slide rail 2. For example, a through hole can be set as the second relevant marker at the position where the biased heavy-duty mobile platform is about to stop on the slide rail 2. When the controller obtains the second relevant marker from the second infrared sensor 21, it can drive the brake device 4 to reduce the speed of the biased heavy-duty mobile platform on the slide rail 2.

[0071] like Figure 1 As shown, a rain cover 22 can be installed on the frame.

[0072] like Figure 5 As shown, lifting rings 23 can be installed on the frame 1 to facilitate the installation of the offset heavy-duty mobile platform on the slide rail 2 using a crane.

[0073] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. A dual-wheel drive, laterally guided offset heavy-duty mobile platform, wherein the offset heavy-duty mobile platform slides on a slide rail (2), characterized in that, The offset heavy-duty mobile platform includes: a frame (1), a servo motor (3), a braking device (4), and a mounting flange (9), wherein, The slide rail (2) passes through the front and back of the frame (1) and forms an opening on the right side of the frame (1). The support structure (2-1) of the slide rail is fixed to the slide rail (2) and passes through the opening. The slide rail (2) has an "I" shaped cross section along its width direction. The frame (1) is fixed with multiple limiting wheels (5) at positions opposite to the "I" shaped edge of the slide rail (2). Each limiting wheel (5) has a recessed groove formed on its circumferential surface, and the "I" shaped edge is embedded in the recessed groove. A main drive shaft (6) and an auxiliary drive shaft (7) are rotatably connected within the frame (1). The main drive shaft (6) and the auxiliary drive shaft (7) are located above the slide rail (2). The length directions of the main drive shaft (6) and the auxiliary drive shaft (7) are perpendicular to the slide rail (2). Each of the main drive shaft (6) and the auxiliary drive shaft (7) is fixedly mounted with a drive wheel (8). The servo motor (3) is fixedly mounted on the frame (1). The servo motor (3) drives the drive wheel (8) on it to slide on the slide rail (2) through the main drive shaft (6) and the auxiliary drive shaft (7). The braking device (4) is fixed on the frame (1) and is used to reduce the speed of the offset heavy-duty mobile platform on the slide rail (2); The mounting flange (9) is located below the frame (1) and is fixed to the frame (1). The mounting flange (9) is located on the left side of the vertical surface of the slide rail (2). The braking device (4) includes: an upper mounting plate (4-1), a lower mounting plate (4-2), a friction plate (4-3), an electric push rod (4-4), and a linear bearing (4-5). The number of linear bearings (4-5) is at least one. The upper mounting plate (4-1) is fixedly mounted to the frame (1). The lower mounting plate (4-2) is parallel to the upper mounting plate (4-1). The linear bearings (4-5) and the electric push rod (4-4) are arranged in parallel and are both fixedly mounted between the lower mounting plate (4-2) and the upper mounting plate (4-1) so that the lower mounting plate (4-2) can move along the length direction of the electric push rod (4-4). The friction plate (4-3) is fixedly mounted on the lower surface of the lower mounting plate (4-2). When the electric push rod (4-4) extends, the friction plate (4-3) contacts the surface of the slide rail (2). An anti-derailment assembly (16) is fixedly mounted on the frame (1) above the opening and the frame (1) below the opening. The anti-derailment assembly (16) includes: a first bracket (16-1) and a wheel (16-2) rotatably mounted on the first bracket (16-1). The first bracket (16-1) is fixedly mounted to the frame (1). The wheel (16-2) in the anti-derailment assembly (16) fixedly mounted on the frame (1) above the opening contacts the lower surface of the top plate of the slide rail (2) and slides thereon. The wheel (16-2) in the anti-derailment assembly (16) fixedly mounted on the frame (1) below the opening contacts the upper surface of the slide rail (2) and slides thereon. The anti-derailment assembly (16) located above the opening also includes a first vertical plate (16-3) fixedly mounted to the first bracket (16-1). The vertical plate (16-3) is located to the right of the top plate of the slide rail (2), and the distance between the first vertical plate (16-3) and the edge near the slide rail (2) is 8~15mm; the anti-derailment assembly (16) located below the opening also includes: a second vertical plate (16-4) and a horizontal plate (16-5), the second vertical plate (16-4) is located to the right of the bottom plate of the slide rail (2) and is fixed to the first bracket (16-1), the horizontal plate (16-5) is located below the slide rail (2) and is fixed to the second vertical plate (16-4), the included angle between the second vertical plate (16-4) and the horizontal plate (16-5) is 90°, the distance between the second vertical plate (16-4) and the edge of the slide rail (2) is 8~15mm, and the distance between the horizontal plate (16-5) and the bottom plate of the slide rail (2) is 8~15mm.

2. The biased heavy-duty mobile platform according to claim 1, characterized in that, Anti-collision devices (18) are installed at the front and / or rear of the frame (1).

3. The biased heavy-duty mobile platform according to claim 1 or 2, characterized in that, Snowplows (24) for removing snow from the surface of the slide rail (2) are installed at the front and / or rear of the frame (1).

4. The biased heavy-duty mobile platform according to claim 1, characterized in that, The main drive shaft (6) and the auxiliary drive shaft (7) are each fixedly equipped with a first synchronous pulley (11), the main drive shaft (6) is fixedly equipped with a second synchronous pulley (12), the output shaft of the servo motor (3) is fixedly equipped with a third synchronous pulley (13), the third synchronous pulley (13) and the second synchronous pulley (12) are equipped with a first synchronous belt (14), and the first synchronous pulley (11) on the main drive shaft (6) and the auxiliary drive shaft (7) are equipped with a second synchronous belt (15).

5. The biased heavy-duty mobile platform according to claim 4, characterized in that, Also includes: The elastic support wheel (17) is rotatably connected to the frame (1) and located below the slide rail (2). The top of the elastic support wheel (17) contacts the bottom surface of the slide rail (2) and can slide on the slide rail (2).

6. The biased heavy-duty mobile platform according to claim 5, characterized in that, The number of elastic support wheels (17) is two, and the two elastic support wheels (17) are located on both sides of the vertical plane of the slide rail (2) and are staggered in the front-back direction.

7. The biased heavy-duty mobile platform according to claim 6, characterized in that, It also includes a tensioning device (19) for adjusting the tension of the second synchronous belt (15), the tensioning device (19) being fixedly mounted on the frame (1), the tensioning device (19) including: a tensioning wheel (19-1), a tensioning wheel bracket (19-2), a wire lever (19-3) and a third bracket (19-4), the third bracket (19-4) being fixedly mounted to the frame (1), the wire lever (19-3) passing through the third bracket (19-4) and being fastened to the third bracket (19-4) by bolts, the tensioning wheel bracket (19-2) being threadedly connected to the wire lever (19-3), and the tensioning wheel (19-1) being rotatably connected to the tensioning wheel bracket (19-2).

8. The biased heavy-duty mobile platform according to claim 7, characterized in that, It also includes a first infrared sensor (20) and a second infrared sensor (21). Both the first infrared sensor (20) and the second infrared sensor (21) are installed on the frame (1). The first infrared sensor (20) measures the first relevant marker on the slide rail (2) to locate the position of the biased heavy-duty mobile platform on the slide rail (2). The second infrared sensor (21) measures the second relevant marker on the surface of the slide rail (2).

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