Telescopic lifting platform chassis for polar expedition

Abstract

The present application relates to the technical field of hoist chassis, and provides a telescopic hoist platform chassis for polar scientific expedition, which comprises a chassis body, two groups of mounting shells symmetrically arranged on the chassis body through a support frame, two mounting shells in each group, a connecting rod arranged on the mounting shell, a sleeve screw-coupled with the connecting rod, a piston sealingly sliding in the sleeve and fixedly connected to one end of the connecting rod away from the adjacent mounting shell, a screw anchor rotationally connected to the sleeve, and a power module arranged on the sleeve and used for driving the adjacent screw anchor to rotate. When the chassis body is laterally overturned, the connecting rod on the side away from the ground is controlled to move upward along the adjacent sleeve, so that the screw anchor is always fixed on the ground, the fixing force provided by the screw anchor can still support the side of the chassis body away from the ground, and the screw anchor on the side away from the ground is not directly pulled out of the ground, thereby reducing the occurrence of hoist overturning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoist chassis, in particular to a telescopic hoist platform chassis for polar scientific expedition. BACKGROUND

[0002] Polar scientific expedition activities, such as glacier exploration, ocean exploration and base construction, often need to hoist heavy objects on ice, permafrost or snow-covered complex terrain. In such environments, the stability of hoisting equipment (such as small cranes or truck cranes) is the primary prerequisite for ensuring the safety and efficiency of operations. Due to the special conditions of the polar surface, the traditional fixed method relying on concrete foundation or large counterweight blocks is difficult to implement, therefore, the current mainstream solution is to integrate a screw anchor system on the hoist chassis.

[0003] In the prior art, a polar hoist is usually equipped with four or more screw anchors located at the corners of the chassis. Before operation, these screw anchors are vertically rotated into the ground by a driving device, relying on the biting force and friction force between the anchor blade and the permafrost or ice layer to provide resistance to uplift, thereby fixing the entire hoist platform to the ground. However, this traditional screw anchor fixing method has a significant inherent defect. When the hoisting arm is stretched to one side of the platform for extreme weight hoisting, a large overturning moment will be generated on the entire device. This moment will be completely converted into an upward pulling force on the screw anchor away from the hoisting point (i.e. the overturning side). Since the screw anchor mainly relies on the fastening force of its upper anchor blade with the soil to provide resistance to uplift, when the actual hoisting weight is too large and the pulling force generated exceeds the maximum fastening force between the screw anchor on the overturning side and the ground, the connection between the anchor rod and the surrounding soil will fail, and the screw anchor on the overturning side will no longer provide effective restraint. The corner of the chassis on this side will be instantly lifted upwards, which destroys the four-point support structure of the entire platform, causing the center of gravity to shift sharply, the support foundation to lose stability, and ultimately leading to a rollover accident of the entire hoist platform, which directly endangers the safety of personnel on site. SUMMARY

[0004] In order to overcome the shortcoming of the existing screw anchor fixing method that is prone to rollover, the present application provides a telescopic hoist platform chassis for polar scientific expedition.

[0005] The technical scheme is as follows: a telescopic lifting new platform chassis for polar scientific expedition, comprising a chassis body, the chassis body is fixedly connected with two groups of mounting shells symmetrically distributed through a support frame, each group of the mounting shells is symmetrically distributed with two mounting shells, the mounting shell is provided with a connecting rod, the connecting rod is spline-connected with a sleeve, one end of the connecting rod away from the adjacent mounting shell is fixedly connected with a piston sealingly sliding in the sleeve, the sleeve is rotationally connected with a screw anchor, the sleeve is provided with a power module for driving the adjacent screw anchor to rotate, the sleeves in the same group are fixedly connected and communicated with a conduit, the conduits symmetrically distributed are fixedly connected and communicated with connecting pipes symmetrically distributed, the conduits symmetrically distributed and the connecting pipes symmetrically distributed are filled with hydraulic oil, the chassis body is fixedly connected with a pressurizing module for feeding hydraulic oil into one of the conduits, the conduits symmetrically distributed and the connecting pipes symmetrically distributed are provided with electromagnetic valves, the electromagnetic valves in the conduits are located between the electromagnetic valves in the connecting pipes symmetrically distributed.

[0006] As preferred, four limiting blocks uniformly distributed in the circumference are slidingly connected in the mounting shell, the limiting blocks and the adjacent mounting shell are fixedly connected with springs, the four limiting blocks in the same mounting shell are used for fixing the adjacent connecting rod, the upper side of the connecting rod is provided with a spherical part, the four limiting blocks in the same mounting shell are provided with arc surfaces for abutting the spherical part of the adjacent connecting rod.

[0007] As preferred, the mounting shell is provided with a latch, the connecting rod is provided with a blind hole for inserting the adjacent latch, and the latch is used for fixing the adjacent connecting rod.

[0008] As preferred, the conduit is provided with a pressure sensor.

[0009] As preferred, the two pressure sensors symmetrically distributed are located on the same side of the electromagnetic valves in the conduit, and the two pressure sensors symmetrically distributed are respectively located on both sides of the electromagnetic valves in the same connecting pipe.

[0010] As preferred, the chassis body is fixedly connected with fixed frames uniformly distributed, the fixed frame is rotationally connected with a rotating ball, the rotating ball is slidingly connected with a support rod, the fixed frame is threadedly connected with a bolt, and the support rod is provided with a limiting hole for inserting the adjacent bolt.

[0011] As preferred, the fixed frame is provided with guide grooves symmetrically distributed, the support rod is composed of a horizontal rod and a vertical rod, the horizontal rod of the support rod slides in the guide grooves symmetrically distributed on the adjacent fixed frame, the guide groove is composed of a vertical groove and an inclined groove, and the support rod and the adjacent fixed frame are fixedly connected with a tension spring.

[0012] As preferred, the inclined groove of the guide groove gradually approaches the bottom body from top to bottom.

[0013] As preferred, the fixing frame is fixed with a connecting plate symmetrically distributed between the guide grooves, the connecting plate is fixed with first clamping blocks distributed at equal intervals, and the support rod is fixed with second clamping blocks, and the first clamping blocks distributed at equal intervals are used for limiting the adjacent second clamping blocks.

[0014] As preferred, the diameter of the crossbar of the support rod is smaller than the width of the guide groove, and the lower side of the support rod is made of elastic material.

[0015] The present application has the following advantages: when the chassis body overturns, the connecting rod on the side off the ground is moved upward along the adjacent sleeve, so that the screw anchor is always fixed to the ground, ensuring that the fixing force provided by the screw anchor can still support the side off the ground of the chassis body, rather than directly pulling the screw anchor off the ground, thereby reducing the occurrence of crane overturning, and through the pressure sensor detecting pressure data and controlling the opening and closing state of the electromagnetic valve, the present application can respond to the overturning of the crane in different directions, improve the safety performance of the crane, and ensure the process of lifting operation. When the chassis body overturns in any direction, the support rods in the remaining directions except the overturning direction will support the chassis body, thereby improving the safety performance of the crane. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0017] Figure 2 is a schematic diagram of the three-dimensional structure of the sleeve and the guide pipe of the present application;

[0018] Figure 3 is a schematic diagram of the three-dimensional structure of the sleeve and the screw anchor of the present application;

[0019] Figure 4 is a schematic diagram of the three-dimensional structure of the present application;

[0020] Figure 5 is an exploded view of the mounting shell and the limiting block of the present application;

[0021] Figure 6 is a schematic diagram of the three-dimensional structure of the connecting pipe and the electromagnetic valve of the present application;

[0022] Figure 7 is a schematic diagram of the three-dimensional structure of the fixing frame and the support rod of the present application.

[0023] Explanation of reference signs: 1 - chassis body, 2 - mounting shell, 21 - limiting block, 22 - spring, 23 - latch, 3 - connecting rod, 4 - sleeve, 5 - piston, 6 - screw anchor, 7 - conduit, 8 - connecting pipe, 9 - electromagnetic valve, 10 - pressure sensor, 11 - fixing frame, 1101 - guide groove, 12 - rotating ball, 13 - support rod, 14 - bolt, 15 - tension spring, 16 - connecting plate, 17 - first clamping block, 18 - second clamping block. DETAILED DESCRIPTION

[0024] The application will be further described below in conjunction with the drawings and examples.

[0025] Example 1

[0026] The existing polar crane is generally fixed by screw anchors installed on the chassis and screwed into the ground. During the lifting process of the crane, if the lifting weight is too large, the fastening force between the screw anchor on one side and the ground cannot fix the crane, so that one side of the chassis of the crane is lifted instantaneously, thereby causing the risk of rollover of the crane.

[0027] A telescopic lifting new platform chassis for polar scientific exploration, like Figures 1-6As shown, including the chassis body 1, the chassis body 1 is mounted on the lifting structure (not shown in the figure), the chassis body 1 is fixedly connected with two groups of installation shells 2 distributed symmetrically by the support frame, and each group of installation shells 2 is left-right symmetrically distributed. The installation shell 2 is provided with a connecting rod 3, the connecting rod 3 is spline connected with a sleeve 4, the lower end of the connecting rod 3 is fixedly connected with a piston 5 which is sealingly sliding in the sleeve 4, the lower side of the sleeve 4 is rotatably connected with a screw anchor 6, the sleeve 4 is provided with a power module for driving the adjacent screw anchor 6 to rotate, the power module can include a motor (not shown in the figure) mounted on the sleeve 4, the output shaft of the motor drives the screw anchor 6 to rotate through a gear set, the power module can also be an electric sleeve (not shown in the figure) rotatably connected between the screw anchor 6 and the sleeve 4, the two sleeves 4 in the same group are fixedly connected and communicated with a conduit 7, the two conduits 7 are fixedly connected and communicated with two connecting pipes 8 which are left-right symmetrically distributed, the two conduits 7 and the two connecting pipes 8 are filled with hydraulic oil, the chassis body 1 is fixedly connected with a pressurizing module which leads hydraulic oil into the front conduit 7, the pressurizing module is an oil injection pump and an oil injection pipe (not shown in the figure) communicated with the front conduit 7, the two conduits 7 and the two connecting pipes 8 are provided with electromagnetic valves 9, the electromagnetic valves 9 in the conduit 7 are located between the electromagnetic valves 9 in the symmetrically distributed connecting pipes 8, the installation shell 2 is slidingly connected with four limit blocks 21 which are uniformly distributed in the circumference, the limit blocks 21 and the adjacent installation shell 2 are fixedly connected with springs 22, the four limit blocks 21 in the same installation shell 2 are used together to fix the adjacent connecting rod 3, the upper side of the connecting rod 3 is provided with a spherical part, the four limit blocks 21 in the same installation shell 2 are all provided with an arc surface for abutting the spherical part of the adjacent connecting rod 3, the upper side of the installation shell 2 is provided with a latch 23, the connecting rod 3 is provided with a blind hole for the adjacent latch 23 to insert, for preventing the connecting rod 3 from rotating relative to the adjacent installation shell 2, the conduit 7 is provided with a pressure sensor 10, the two pressure sensors 10 are both located on the left side of the electromagnetic valve 9 in the conduit 7, and the two pressure sensors 10 are respectively located on the front and rear sides of the electromagnetic valve 9 in the left connecting pipe 8.

[0028] When the lifting operation is needed, the operator moves the chassis body 1 to the designated position and fixes the chassis body 1, and the specific operation is as follows: in the initial state, the pin 23 is inserted into the blind hole of the adjacent connecting rod 3, the connecting rod 3 is limited and cannot rotate, at the same time, the connecting rod 3 and the adjacent sleeve 4 are spline connected, the sleeve 4 cannot rotate, the spring 22 is in the compressed state, and the four electromagnetic valves 9 are all in the open state. The operator starts the pressurizing module, the pressurizing module injects hydraulic oil into the front conduit 7, the two conduits 7 and the two connecting pipes 8 are communicated, so the lower part of the piston 5 in the four sleeves 4 is injected with hydraulic oil. Taking the sleeve 4 at the right front part as an example, the hydraulic oil pushes the sleeve 4 to move downward, the sleeve 4 drives the power module and the screw anchor 6 on it to move downward, when the lower end of the screw anchor 6 contacts the ground, the operator starts the power module to drive the screw anchor 6 to rotate, the screw anchor 6 gradually rotates into the ground, when the screw anchor 6 completes the fixation of the chassis body 1, the operator stops the power module, at the same time, closes the four electromagnetic valves 9 and pulls out the four pins 23.

[0029] When the fixation of the chassis body 1 is completed, the operator performs the lifting operation, taking the case that the lifting arm is located at the left side of the chassis body 1 as an example. During the lifting process, since the weight is located at the left side of the chassis body 1, the chassis body 1 has a tendency to deflect counterclockwise, so the chassis body 1 drives the two installation shells 2 at the left side to extrude the connecting rod 3 downward, the two connecting rods 3 drive the adjacent pistons 5 to extrude the hydraulic oil below them, the pressure of the left side of the electromagnetic valve 9 in the conduit 7 increases, and the pressure of the right side of the electromagnetic valve 9 in the conduit 7 decreases for the same reason. The pressure detected by the two pressure sensors 10 increases, when the pressure detected by the pressure sensor 10 reaches a specified threshold value (the specified threshold value is the pressure at which the two screw anchors 6 at the right side are insufficient to fix the chassis body 1, which can be understood as exceeding the specified threshold value, the two screw anchors 6 at the right side will be pulled out of the ground directly, and the risk of the crane tilting will occur), the operator opens the electromagnetic valves 9 in the two conduits 7, at this time, the left front sleeve 4 and the right front sleeve 4 are communicated through the front conduit 7, and the left rear sleeve 4 and the right rear sleeve 4 are communicated through the rear conduit 7. Taking the front conduit 7 as an example, the pressure of the hydraulic oil in the left sleeve 4 is greater than that in the right sleeve 4, so the hydraulic oil in the left sleeve 4 enters the right sleeve 4 through the conduit 7. Taking the left sleeve 4 as an example, since the screw anchor 6 is fixed to the ground, during the counterclockwise rotation of the chassis body 1 around the left side thereof, the chassis body 1 drives the installation shell 2 at the left front part to move downward, since the left side of the chassis body 1 does not move vertically downward, the chassis body 1 drives the installation shell 2 to move downward while moving to the left, and the moving track is arc-shaped (counterclockwise) Figure 3 front view direction).

[0030] In the process of moving along the arc-shaped track, the left mounting shell 2 drives the four limiting blocks 21 in it to move, the right limiting block 21 cannot be driven by the mounting shell 2 to move to the left due to the limitation of the spherical part of the connecting rod 3, so the right spring 22 is compressed, and the elastic force of the left spring 22 is released to make the left limiting block 21 tightly contact the spherical part of the connecting rod 3, and the front and rear limiting blocks 21 are away from each other due to the limitation of the spherical part of the connecting rod 3, and the front and rear springs 22 are compressed. In the process, the left connecting rod 3 moves downward relative to the adjacent sleeve 4, and the right connecting rod 3 moves upward relative to the adjacent sleeve 4, and the right side of the chassis body 1 is gradually lifted off the ground. The operator perceives that the chassis body 1 is lifted, and then the heavy object is no longer lifted. At the same time, as the right side of the chassis body 1 is lifted, the left heavy object gradually approaches the ground, and finally the heavy object is moved to the ground. In the above process, by gradually lengthening the connection length of the right connecting rod 3 and the sleeve 4, the screw anchor 6 is always fixed to the ground, so that the fixing force provided by the screw anchor 6 can still fix the right side of the chassis body 1, instead of directly pulling out the right screw anchor 6 from the ground, thereby reducing the occurrence of the side turning of the crane. At the same time, the spherical part of the connecting rod 3 is limited by the adjacent four limiting blocks 21 and slides in the adjacent mounting shell 2. In order to adapt to the dislocation between the mounting shell 2 and the adjacent connecting rod 3 during the deflection of the chassis body 1, the screw anchor 6 is further fixed to the ground to improve the performance of the crane against side turning.

[0031] In the lifting process, not only the above-mentioned side turning occurs, specifically, it is divided into left and right side turning and front and rear side turning. The left and right side turning is divided into left side turning (the above-mentioned example of side turning process) and right side turning, and the front and rear side turning is divided into front side turning and rear side turning. When the left and right side turning occurs, the pressure detection data of the two pressure sensors 10 changes the same, synchronously increases or synchronously decreases, so that when adjusting the state of the four electromagnetic valves 9, the electromagnetic valves 9 in the two conduits 7 need to be in the open state, and the electromagnetic valves 9 in the two connecting pipes 8 need to be in the closed state. When the front and rear side turning occurs, the pressure detection data of the two pressure sensors 10 changes differently, one of the pressure sensors 10 detects that the data increases, and the other of the pressure sensors 10 detects that the data decreases. When adjusting the state of the four electromagnetic valves 9, the electromagnetic valves 9 in the two conduits 7 need to be in the closed state, and the electromagnetic valves 9 in the two connecting pipes 8 need to be in the open state, so as to complete the response to the side turning of the crane in different directions, improve the safety performance of the crane, and ensure the lifting operation process.

[0032] When the heavy object moves to the ground, the operator continues to slowly release the hoisting rope, at this time the chassis body 1 is gradually deflected clockwise by its own gravity, the right side of the chassis body 1 moves downward and drives the connecting rod 3 and the piston 5 to move downward through the mounting shell 2, the hydraulic oil in the right sleeve 4 gradually enters the left sleeve 4 through the conduit 7, and since the hydraulic oil slowly flows in the conduit 7, the chassis body 1 will slowly deflect during the deflection process, improving the safety of the hoisting machine, when the chassis body 1 is flush with the ground, the operator no longer releases the hoisting rope, and the operator closes the electromagnetic valve 9 in the two conduits 7, and the use of the hoisting machine is completed.

[0033] Embodiment 2

[0034] On the basis of embodiment 1, a telescopic new platform hoisting chassis for polar scientific exploration is shown in Figure 1 and Figure 7 The chassis body 1 is fixedly connected with uniformly distributed fixing frames 11, the fixing frames 11 are rotationally connected with rotating balls 12, the rotating balls 12 are slidably connected with support rods 13, the support rods 13 are composed of vertical rods and upper horizontal rods, the fixing frames 11 are threadedly connected with bolts 14, the support rods 13 are provided with limiting holes for insertion of adjacent bolts 14, the bolts 14 are used for fixing adjacent support rods 13, the fixing frames 11 are provided with two symmetrically distributed guide grooves 1101, the horizontal rods of the support rods 13 slide in the two guide grooves 1101 on adjacent fixing frames 11, the guide grooves 1101 are composed of vertical grooves and inclined grooves, the vertical grooves are located on the upper side of the inclined grooves, the support rods 13 and the adjacent fixing frames 11 are fixedly connected with tension springs 15, in the initial state, the tension springs 15 are in the stretched state, the inclined grooves of the guide grooves 1101 gradually approach the chassis body 1 from top to bottom, the fixing frames 11 are fixedly connected with connecting plates 16 located between the two guide grooves 1101 thereon, the connecting plates 16 are fixedly connected with first clamping blocks 17 distributed at equal intervals, the upper sides of the support rods 13 are fixedly connected with second clamping blocks 18, the first clamping blocks 17 distributed at equal intervals are all used for limiting adjacent second clamping blocks 18, when the second clamping blocks 18 are clamped between adjacent two first clamping blocks 17, the second clamping blocks 18 and the support rods 13 are fixed and cannot move upward, the diameters of the horizontal rods of the support rods 13 are smaller than the widths of the guide grooves 1101, and the lower sides of the support rods 13 are of elastic material, facilitating subsequent movement of the second clamping blocks 18 out of adjacent two first clamping blocks 17.

[0035] When the spiral anchor 6 is fixed to the bottom plate body 1, the operator rotates the bolt 14 to move it out of the limiting hole of the adjacent support rod 13, for example, the limiting of the support rod 13 is released, the tension of the tension spring 15 in the stretched state is released to drive the support rod 13 to move downward, the upper side of the support rod 13 moves downward along the vertical groove of the guide groove 1101, when the lower end of the support rod 13 contacts the bottom surface, it no longer moves downward, when the bottom plate body 1 tilts to the left, for example, the bottom plate body 1 tilts to the left, for example, the bottom plate body 1 drives the fixing frame 11 to move upward, the tension of the tension spring 15 in the stretched state continues to release to make the lower end of the support rod 13 tightly contact the ground.

[0036] When the upper side of the support rod 13 enters the inclined groove of the guide groove 1101, the lower end of the support rod 13 begins to move away from the bottom plate body 1, the support rod 13 drives the rotating ball 12 to rotate, the support rod 13 drives the second clamping block 18 to gradually clamp into the first clamping block 17 distributed at equal intervals, when the bottom plate body 1 no longer tilts, the second clamping block 18 cannot move upward due to the limiting of the adjacent first clamping block 17, at this time, except for the left support rod 13, the remaining support rods 13 are in the expanded state and support the bottom plate body 1, the support rod 13 in the expanded state makes the bottom plate body 1 more stable, and improves the anti-tilting performance of the lifting machine, in the above process, when the bottom plate body 1 tilts in any direction, the support rods 13 in the remaining directions except the tilting direction will support the bottom plate body 1, thereby improving the safety performance of the lifting machine, when it is necessary to recover the support rod 13, the operator pulls the support rod 13 away from the fixing frame 11, because the lower side of the support rod 13 contacts the ground and is made of elastic material, the lower side of the support rod 13 is extruded to deform, the support rod 13 drives the second clamping block 18 to move away from the adjacent two first clamping blocks 17, when the second clamping block 18 moves out of the adjacent two first clamping blocks 17, the operator pushes the support rod 13 to move upward along the guide groove 1101, the tension spring 15 is stretched, when the limiting hole of the support rod 13 is aligned with the bolt 14, the operator rotates the bolt 14 to fix the support rod 13.

[0037] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A telescopic lifting platform chassis for polar expedition, comprising a chassis body (1), the chassis body (1) is fixedly connected with two groups of installation shells (2) which are symmetrically distributed through a support frame, two of the installation shells (2) in each group are symmetrically distributed, the installation shell (2) is provided with a connecting rod (3), the connecting rod (3) is spline-connected with a sleeve (4), one end of the connecting rod (3) away from the adjacent installation shell (2) is fixedly connected with a piston (5) which is sealingly slid in the sleeve (4), the sleeve (4) is rotationally connected with a screw anchor (6), the sleeve (4) is provided with a power module for driving the adjacent screw anchor (6) to rotate, the sleeves (4) in the same group are fixedly connected and communicated with a conduit (7), the symmetrically distributed conduits (7) are fixedly connected and communicated with symmetrically distributed connecting pipes (8), the symmetrically distributed conduits (7) and the symmetrically distributed connecting pipes (8) are both filled with hydraulic oil, characterized in that, The chassis body (1) is fixedly connected with a pressurizing module for feeding hydraulic oil into one of the conduits (7), the conduits (7) are symmetrically distributed, the connecting pipes (8) are symmetrically distributed, and the electromagnetic valves (9) are arranged in the conduits (7) and the connecting pipes (8); the electromagnetic valves (9) in the conduits (7) are located between the electromagnetic valves (9) in the symmetrically distributed connecting pipes (8); four limit blocks (21) are uniformly distributed and are slidably connected in the mounting shell (2), springs (22) are arranged between the limit blocks (21) and the adjacent mounting shell (2), and the four limit blocks (21) in the same mounting shell (2) are used for fixing the adjacent connecting rods (3) together, the upper side of the connecting rod (3) is provided with a spherical part, and the four limit blocks (21) in the same mounting shell (2) are all provided with arc surfaces for abutting the spherical part of the adjacent connecting rod (3); the mounting shell (2) is provided with a latch (23), the connecting rod (3) is provided with a blind hole for inserting the adjacent latch (23), and the latch (23) is used for fixing the adjacent connecting rod (3).

2. The telescopic lifting new platform chassis for polar expedition according to claim 1, characterized in that, The conduit (7) is provided with a pressure sensor (10).

3. The telescopic lifting new platform chassis for polar expedition according to claim 2, characterized in that, The two pressure sensors (10) are located on the same side of the electromagnetic valve (9) in the conduit (7), and the two pressure sensors (10) are located on the two sides of the electromagnetic valve (9) in the same connecting pipe (8).

4. A telescopic lifting platform chassis for polar expedition, comprising a chassis body (1), the chassis body (1) is fixedly connected with two groups of installation shells (2) which are symmetrically distributed through a support frame, each group of the installation shells (2) is symmetrically distributed with two installation shells (2), the installation shell (2) is provided with a connecting rod (3), the connecting rod (3) is spline connected with a sleeve (4), one end of the connecting rod (3) away from the adjacent installation shell (2) is fixedly connected with a piston (5) which is sealingly slid in the sleeve (4), the sleeve (4) is rotationally connected with a screw anchor (6), the sleeve (4) is provided with a power module for driving the adjacent screw anchor (6) to rotate, the sleeves (4) in the same group are fixedly connected and communicated with a conduit (7), the symmetrically distributed conduits (7) are fixedly connected and communicated with symmetrically distributed connecting pipes (8), the symmetrically distributed conduits (7) and the symmetrically distributed connecting pipes (8) are filled with hydraulic oil, characterized in that, The chassis body (1) is fixedly connected with a pressurizing module for feeding hydraulic oil into one of the conduits (7), the conduits (7) are symmetrically distributed, the connecting pipes (8) are symmetrically distributed, and the electromagnetic valves (9) are arranged in the conduits (7) and the connecting pipes (8); the electromagnetic valves (9) in the conduits (7) are located between the electromagnetic valves (9) in the symmetrically distributed connecting pipes (8); the chassis body (1) is fixedly connected with uniformly distributed fixing frames (11), the fixing frames (11) are rotatably connected with rotating balls (12), the rotating balls (12) are slidably connected with support rods (13), the fixing frames (11) are threadedly connected with bolts (14), and the support rods (13) are provided with limiting holes for inserting the adjacent bolts (14); the fixing frames (11) are provided with symmetrically distributed guide grooves (1101), the support rods (13) are composed of horizontal rods and vertical rods, the horizontal rods of the support rods (13) slide in the symmetrically distributed guide grooves (1101) on the adjacent fixing frames (11), the guide grooves (1101) are composed of vertical grooves and inclined grooves, and the support rods (13) and the adjacent fixing frames (11) are fixedly connected with tension springs (15).

5. The telescopic lifting new platform chassis for polar expedition according to claim 4, characterized in that, The inclined grooves of the guide grooves (1101) gradually approach the chassis body (1) from top to bottom.

6. The telescopic lifting new platform chassis for polar expedition according to claim 5, characterized in that, The fixed frame (11) is fixedly connected with a connecting plate (16) located between the symmetrically distributed guide grooves (1101), the connecting plate (16) is fixedly connected with first clamping blocks (17) distributed at equal intervals, the supporting rod (13) is fixedly connected with second clamping blocks (18), and the first clamping blocks (17) distributed at equal intervals are used for limiting adjacent second clamping blocks (18).

7. The telescopic lifting new platform chassis for polar expedition according to claim 6, characterized in that, The diameter of the cross bar of the supporting rod (13) is smaller than the width of the guide groove (1101), and the lower side of the supporting rod (13) is made of elastic material.

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