Novel telescopic lifting platform chassis for polar scientific investigation

Abstract

The invention relates to the technical field of lifting machine chassis, and provides a novel telescopic lifting platform chassis for polar scientific investigation. Comprising a chassis body, the chassis body is fixedly connected with two sets of mounting shells which are symmetrically distributed through a supporting frame, each set of mounting shells comprises two mounting shells which are symmetrically distributed, the mounting shells are provided with connecting rods, and the connecting rods are in spline connection with sleeves; the end, away from the adjacent mounting shell, of the connecting rod is fixedly connected with a piston which slides in the sleeve in a sealed mode, the sleeve is rotationally connected with a spiral anchor, and the sleeve is provided with a power module used for driving the adjacent spiral anchor to rotate. When the chassis body turns on one side, the connecting rod on the off-ground side is controlled to move upwards along the adjacent sleeve, so that the spiral anchor is fixed to the ground all the time, it is guaranteed that fixing force provided by the spiral anchor can still support the off-ground side of the chassis body, and the situation that the spiral anchor on the off-ground side is directly pulled out of the ground is avoided; and therefore, the rollover condition of the lifting machine is reduced.

Description

Technical Field

[0001] This invention relates to the field of crane chassis technology, and in particular to a new telescopic lifting platform chassis for polar scientific research. Background Technology

[0002] Polar scientific expeditions, such as glacier exploration, marine surveys, and base construction, often require lifting heavy objects on complex terrains covered by ice, permafrost, or snow. In such environments, the stability of lifting equipment (such as small cranes or truck-mounted cranes) is the primary prerequisite for ensuring operational safety and efficiency. Due to the special surface conditions in polar regions, traditional methods of fixing objects using concrete foundations or large counterweights are difficult to implement. Therefore, the current mainstream solution is to integrate a spiral anchor system on the chassis of the crane.

[0003] In existing technology, polar cranes are typically equipped with four or more helical anchors located at the corners of the chassis. Before operation, these helical anchors are vertically screwed into the ground by a drive device. The interlocking force and friction between the anchor plates and the frozen soil or ice layer provide pull-out resistance, thereby fixing the entire crane platform to the ground. However, this traditional helical anchor fixing method has a significant inherent drawback: when the crane boom extends to one side of the platform for extreme weight lifting, the entire equipment generates a huge overturning moment. This moment is entirely converted into a force on the helical anchors on the side furthest from the lifting point (i.e., the overturning side). The upward pull-out force of the helical anchor is mainly due to the tightness between its upper anchor plate and the soil. When the actual lifting weight is too large, the pull-out force exceeds the maximum tightness between the helical anchor on that side and the ground. The connection between the anchor and the surrounding soil will fail, and the helical anchor on the overturning side will no longer provide effective restraint. The corner of the chassis on that side will be lifted upward instantly. This instantaneous lifting will destroy the four-point support structure of the entire platform, causing the center of gravity to shift sharply, the support foundation to become unstable, and ultimately it is very easy to cause the entire crane platform to overturn, which will directly endanger the lives of personnel on site. Summary of the Invention

[0004] To overcome the drawback of existing spiral anchor fixing methods that are prone to tipping over, this invention provides a new telescopic lifting platform chassis for polar scientific research.

[0005] The technical solution is as follows: A new telescopic lifting platform chassis for polar scientific research includes a chassis body. The chassis body is fixed to two symmetrically distributed sets of mounting shells via a support frame. Each set of mounting shells consists of two symmetrically distributed shells. Each mounting shell is provided with a connecting rod, and the connecting rod is splined to a sleeve. The end of the connecting rod away from the adjacent mounting shell is fixed to a piston that slides and seals within the sleeve. The sleeve is rotatably connected to a helical anchor. The sleeve is provided with a power module for driving the adjacent helical anchor to rotate. The sleeves in the same set are fixedly connected and connected by conduits. The symmetrically distributed conduits are fixedly connected and connected by symmetrically distributed connecting pipes. Both the symmetrically distributed conduits and the symmetrically distributed connecting pipes are filled with hydraulic oil. The chassis body is fixedly connected to a pressurizing module for introducing hydraulic oil into one of the conduits. Both the symmetrically distributed conduits and the symmetrically distributed connecting pipes are provided with solenoid valves. The solenoid valves in the conduits are located between the solenoid valves in the symmetrically distributed connecting pipes.

[0006] Preferably, four circumferentially evenly distributed limiting blocks are slidably connected inside the mounting shell. A spring is fixed between the limiting block and the adjacent mounting shell. The four limiting blocks in the same mounting shell are used to fix the adjacent connecting rod. A spherical part is provided on the upper side of the connecting rod. The four limiting blocks in the same mounting shell are all provided with an arc surface for fitting the spherical part of the adjacent connecting rod.

[0007] Preferably, the mounting housing is equipped with a pin, and the connecting rod is provided with a blind hole for adjacent pins to be inserted into, the pin being used to fix adjacent connecting rods.

[0008] Preferably, a pressure sensor is installed inside the conduit.

[0009] Preferably, the two symmetrically distributed pressure sensors are both located on the same side of the solenoid valve inside the conduit, or the two symmetrically distributed pressure sensors are respectively located on both sides of the solenoid valve inside the same connecting pipe.

[0010] Preferably, the chassis body is fixedly connected to a uniformly distributed fixing frame, the fixing frame is rotatably connected to a rotating ball, the rotating ball is slidably connected to a support rod, the fixing frame is threadedly connected to a bolt, and the support rod is provided with a limiting hole for adjacent bolts to be inserted.

[0011] Preferably, the fixing frame is provided with symmetrically distributed guide grooves, the support rod is composed of a horizontal bar and a vertical bar, the horizontal bar of the support rod slides in the guide grooves symmetrically distributed on the adjacent fixing frames, the guide groove is composed of a vertical groove and an inclined groove, and a tension spring is fixedly connected between the support rod and the adjacent fixing frame.

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

[0013] Preferably, the fixing frame is fixedly connected to a connecting plate located between the guide grooves symmetrically distributed thereon, the connecting plate is fixedly connected to a first locking block distributed at equal intervals, and the support rod is fixedly connected to a second locking block. The first locking blocks distributed at equal intervals are all used to limit the adjacent second locking blocks.

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

[0015] The present invention has the following beneficial effects: When the chassis body overturns, the present invention controls the connecting rod on the off-ground side to move upward along the adjacent sleeve, so that the spiral anchor is always fixed on the ground. This ensures that the fixing force provided by the spiral anchor can still support the off-ground side of the chassis body, instead of directly pulling the spiral anchor off the ground, thereby reducing the occurrence of crane overturning. By detecting pressure data through a pressure sensor and controlling the opening and closing state of the solenoid valve, the present invention can respond to overturning in different directions of the crane, improving the safety performance of the crane. During the lifting operation, if the chassis body overturns in any direction, the support rods in other directions will support the chassis body, thereby improving the safety performance of the crane. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the sleeve and conduit of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the sleeve and helical anchor of the present invention; Figure 4 This is a three-dimensional structural diagram of the pin and connecting rod of the present invention; Figure 5 This is an exploded three-dimensional view of the mounting shell and limiting block of the present invention; Figure 6 This is a three-dimensional structural diagram of the connecting pipe and solenoid valve of the present invention; Figure 7 This is a three-dimensional structural diagram of the fixing frame and support rod of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1-Chassis body, 2-Mounting shell, 21-Limiting block, 22-Spring, 23-Pin, 3-Connecting rod, 4-Sleeve, 5-Piston, 6-Spiral anchor, 7-Conduit, 8-Connecting pipe, 9-Solenoid valve, 10-Pressure sensor, 11-Fixing bracket, 1101-Guide groove, 12-Rotating ball, 13-Support rod, 14-Bolt, 15-Tension spring, 16-Connecting plate, 17-First locking block, 18-Second locking block. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example 1 Existing polar cranes are typically secured by screw anchors mounted on the chassis and driven into the ground. However, if the lifting weight is too large, the clamping force between one of the screw anchors and the ground may not be sufficient to hold the crane in place, causing one side of the crane chassis to be lifted off the ground instantly, which could lead to the crane tipping over.

[0020] A new telescopic lifting platform chassis for polar scientific research, such as Figures 1-6 As shown, the system includes a chassis body 1, on which a lifting structure (not shown in the figure) is mounted. Two symmetrically distributed mounting shells 2 are fixed to the chassis body 1 via a support frame. Each set of mounting shells 2 consists of two symmetrically distributed shells. Each mounting shell 2 is equipped with a connecting rod 3, which is splined to a sleeve 4. A piston 5, which slides and seals within the sleeve 4, is fixed to the lower end of the connecting rod 3. A spiral anchor 6 is rotatably connected to the lower side of the sleeve 4. The sleeve 4 is equipped with a power module for driving the adjacent spiral anchor 6 to rotate. The power module can be a motor (not shown in the figure) mounted on the sleeve 4, whose output shaft drives the spiral anchor 6 to rotate via a gear set. Alternatively, the power module can be an electric rotating sleeve (not shown in the figure) at the rotatable connection between the spiral anchor 6 and the sleeve 4. A conduit 7 is fixedly connected and connected between the two sleeves 4 in the same set. Two symmetrically distributed connecting pipes 8 are fixedly connected and connected between the two conduits 7. Both conduits 7 and connecting pipes 8 are filled with hydraulic oil. Hydraulic oil is supplied to the forward-facing conduit 7 of the chassis body 1. The oil pressurization module consists of an oil pump and an oil injection pipe (not shown in the figure) connected to the front conduit 7. Solenoid valves 9 are installed in both conduits 7 and both connecting pipes 8. The solenoid valves 9 in the conduits 7 are located between the solenoid valves 9 in the symmetrically distributed connecting pipes 8. Four circumferentially evenly distributed limiting blocks 21 are slidably connected inside the mounting housing 2. Springs 22 are fixed between the limiting blocks 21 and adjacent mounting housings 2. The four limiting blocks 21 in the same mounting housing 2 are used to fix adjacent connecting rods 3. The upper part of the connecting rod 3... The side is provided with a spherical part, and the four limiting blocks 21 in the same mounting shell 2 are all provided with arc surfaces for fitting the spherical parts of the adjacent connecting rods 3. The upper side of the mounting shell 2 is provided with a pin 23, and the connecting rod 3 is provided with a blind hole for the adjacent pin 23 to be inserted to prevent the connecting rod 3 from rotating relative to the adjacent mounting shell 2. A pressure sensor 10 is provided in the conduit 7. Both pressure sensors 10 are located to the left of the solenoid valve 9 in the conduit 7. The two pressure sensors 10 are located on the front and rear sides of the solenoid valve 9 in the left connecting pipe 8, respectively.

[0021] When lifting operations are required, the operator moves the chassis body 1 to the designated position and fixes it. 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, and the connecting rod 3 is restricted and cannot rotate. At the same time, the connecting rod 3 and the adjacent sleeve 4 are splined, and the sleeve 4 cannot rotate. The spring 22 is in a compressed state, and all four solenoid valves 9 are in the open state. The operator starts the pressurization module, and the pressurization module injects hydraulic oil into the front conduit 7. The two conduits 7 and the two connecting pipes 8 are connected, so hydraulic oil is injected below the piston 5 in the four sleeves 4. Taking the right front sleeve 4 as an example, the hydraulic oil pushes the sleeve 4 to move downward. The sleeve 4 drives the power module and the spiral anchor 6 on it to move downward. When the lower end of the spiral anchor 6 contacts the ground, the operator starts the power module to drive the spiral anchor 6 to rotate. The spiral anchor 6 gradually spirals into the ground. After the spiral anchor 6 fixes the chassis body 1, the operator stops the power module, closes the four solenoid valves 9, and pulls out the four pins 23.

[0022] After the chassis body 1 is fixed, the operator performs the lifting operation. Taking the lifting arm located on the left side of the chassis body 1 as an example, during the lifting process, because the heavy object is located on the left side of the chassis body 1, the chassis body 1 has a tendency to deflect counterclockwise. The chassis body 1 then causes the two mounting shells 2 on the left side to press down on the connecting rods 3. The two connecting rods 3, in turn, cause the adjacent pistons 5 to press down on the hydraulic oil below them. The pressure on the left side of the solenoid valve 9 in the conduit 7 increases, and similarly, the pressure on the right side of the solenoid valve 9 in the conduit 7 decreases. The pressure detected by the two pressure sensors 10 increases. When the pressure detected by the pressure sensors 10 reaches a specified threshold (the specified threshold is the pressure at which the two spiral anchors 6 on the right side are insufficient to fix the chassis body 1; this can be understood as exceeding the specified threshold), the two spiral anchors 6 on the right side will be pulled directly out of the ground, and the lifting operation will begin. (There is a risk of tipping over), the operator opens the solenoid valve 9 in the two conduits 7. At this time, the left front sleeve 4 and the right front sleeve 4 are connected through the front conduit 7, and the left rear sleeve 4 and the right rear sleeve 4 are connected 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 the pressure of the hydraulic oil in the right sleeve 4. Therefore, 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 spiral anchor 6 is fixed to the ground, during the counterclockwise rotation of the chassis body 1 around its left side, the chassis body 1 drives the left front mounting shell 2 to move downward. Since the left side of the chassis body 1 does not move vertically downward, the chassis body 1 will move to the left while driving the mounting shell 2 to move downward. The movement trajectory is arc-shaped. Figure 3 (Front view orientation).

[0023] As the left mounting shell 2 moves along the arc-shaped trajectory, it drives the four limiting blocks 21 within it to move. The right limiting block 21, constrained by the spherical part of the connecting rod 3, cannot be moved to the left by the mounting shell 2. Therefore, the right spring 22 is compressed, and the release of the spring force of the left spring 22 causes the left limiting block 21 to press tightly against the spherical part of the connecting rod 3. The front and rear limiting blocks 21, constrained by the spherical part of the connecting rod 3, move away from each other, and the front and rear springs 22 are compressed. During this 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. The right side of the chassis body 1 is gradually lifted off the ground. Once the operator senses that the chassis body 1 has been lifted, they will stop lifting the heavy object. As the right side of the chassis body 1 is lifted, the weight on the left side gradually approaches the ground and eventually moves to the ground. During this process, by gradually extending the connection length between the right connecting rod 3 and the sleeve 4, the spiral anchor 6 is kept fixed on the ground. This ensures that the fixing force provided by the spiral anchor 6 can still fix the right side of the chassis body 1, instead of directly pulling the right spiral anchor 6 out of the ground, thereby reducing the occurrence of crane tipping. At the same time, the spherical part of the connecting rod 3 is limited by four adjacent limiting blocks 21 and slides in the adjacent mounting shell 2. In order to adapt to the situation where the mounting shell 2 and the adjacent connecting rod 3 are misaligned during the deflection of the chassis body 1, the spiral anchor 6 is further fixed on the ground, thereby improving the crane's anti-tipping performance.

[0024] During lifting, the aforementioned side-tipping situation is not the only one that can occur. Specifically, it is divided into two categories: left and right side-tipping and front and rear side-tipping. Left and right side-tipping is further divided into side-tipping to the left (as illustrated in the example above) and side-tipping to the right. Front and rear side-tipping is further divided into side-tipping to the front and side-tipping to the right. When left and right side-tipping occurs, the pressure detection data of the two pressure sensors 10 change in the same way, either rising or falling synchronously. Therefore, when adjusting the state of the four solenoid valves 9, the solenoid valves 9 in the two conduits 7 need to be in the open state, and the solenoid valves 9 in the two connecting pipes 8 need to be in the closed state. When front and rear side-tipping occurs, the pressure detection data of the two pressure sensors 10 change differently, with one pressure sensor 10 detecting an increase and the other detecting a decrease. When adjusting the state of the four solenoid valves 9, the solenoid valves 9 in the two conduits 7 need to be in the closed state, and the solenoid valves 9 in the two connecting pipes 8 need to be in the open state. This is to cope with side-tipping of the crane in different directions, improve the safety performance of the crane, and ensure the lifting operation process.

[0025] After the load is moved to the ground, the operator continues to slowly release the lifting rope. At this time, the chassis body 1, under its own weight, gradually deflects clockwise. The right side of the chassis body 1 moves downward and drives the connecting rod 3 and piston 5 downward through the mounting shell 2. The hydraulic oil in the right sleeve 4 gradually enters the left sleeve 4 through the conduit 7. Because the hydraulic oil flows slowly in the conduit 7, the chassis body 1 will deflect slowly during the deflection process, improving the safety of the crane. When the chassis body 1 is level with the ground, the operator stops releasing the lifting rope and closes the solenoid valves 9 in the two conduits 7. The use of this crane is now complete.

[0026] Example 2 Based on Example 1, a new telescopic lifting platform chassis for polar scientific research is provided, such as... Figure 1 and Figure 7 As shown, the chassis body 1 is fixedly connected to uniformly distributed fixing frames 11. The fixing frames 11 are rotatably connected to rotating balls 12, and the rotating balls 12 are slidably connected to support rods 13. Each support rod 13 consists of a vertical rod and an upper horizontal rod. The fixing frames 11 are threadedly connected to bolts 14. Each support rod 13 has limiting holes for inserting adjacent bolts 14. The bolts 14 are used to fix adjacent support rods 13. The fixing frames 11 are provided with two symmetrically distributed guide grooves 1101. The horizontal rod of the support rod 13 slides within the two guide grooves 1101 on adjacent fixing frames 11. Each guide groove 1101 consists of a vertical groove and an inclined groove, with the vertical groove located above the inclined groove. A tension spring 15 is fixedly connected between the support rod 13 and the adjacent fixing frame 11. In the initial state, the tension spring 15... In the stretched state, the inclined groove of the guide groove 1101 gradually approaches the chassis body 1 from top to bottom. The fixing frame 11 is fixedly connected to the connecting plate 16 located between the two guide grooves 1101. The connecting plate 16 is fixedly connected to the first locking blocks 17 distributed at equal intervals. The upper side of the support rod 13 is fixedly connected to the second locking block 18. The first locking blocks 17 distributed at equal intervals are all used to limit the adjacent second locking blocks 18. When the second locking block 18 is locked between two adjacent first locking blocks 17, the second locking block 18 and the support rod 13 are fixed and cannot move upward. The diameter of the crossbar of the support rod 13 is smaller than the width of the guide groove 1101. The lower side of the support rod 13 is made of elastic material, which makes it easy for the subsequent support rod 13 to drive the second locking block 18 to move out from between two adjacent first locking blocks 17.

[0027] After the spiral anchor 6 fixes the chassis body 1, the operator rotates the bolt 14 to move it out of the limiting hole of the adjacent support rod 13. Taking one of the support rods 13 as an example, after the limiting of the support rod 13 is released, the tension of the tension spring 15 in the tension state is released, causing 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 chassis body 1 tilts to the side, taking tilting to the left as an example, the chassis body 1 deflects around its left side. Taking the front support rod 13 as an example, the chassis body 1 drives the fixing frame 11 to move upward. The tension of the tension spring 15 in the tension state continues to be released, causing the lower end of the support rod 13 to be close to the ground.

[0028] 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 chassis body 1. The support rod 13 drives the rotating ball 12 to rotate, and the support rod 13 drives the second locking block 18 to gradually lock into the equally spaced first locking blocks 17. When the chassis body 1 no longer deflects, the second locking block 18 is limited by the adjacent first locking block 17 and cannot move upward. At this time, except for the support rod 13 on the left, the other support rods 13 are all in an outward expansion state and support the chassis body 1. The outward expansion of the support rods 13 makes the chassis body 1 more stable and improves the anti-tipping performance of the crane. During the above process, if the chassis body 1 tilts in any direction except the tilting direction, the crane will be unable to move upward. All support rods 13 in the other directions support the chassis body 1, thereby improving the safety performance of the crane. When it is necessary to retract the support rod 13, the operator pulls the support rod 13 away from the fixed frame 11. Since the lower side of the support rod 13 is in contact with the ground and is made of elastic material, the lower side of the support rod 13 is squeezed and deformed. The support rod 13 drives the second locking block 18 away from the two adjacent first locking blocks 17. When the second locking block 18 moves out from between the two adjacent first locking blocks 17, the operator pushes the support rod 13 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.

[0029] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A new telescopic lifting platform chassis for polar scientific research, comprising a chassis body (1), wherein the chassis body (1) is fixedly connected to two symmetrically distributed sets of mounting shells (2) via a support frame, wherein each set of mounting shells (2) consists of two symmetrically distributed sets, each mounting shell (2) is provided with a connecting rod (3), the connecting rod (3) is splinedly connected to a sleeve (4), one end of the connecting rod (3) away from the adjacent mounting shell (2) is fixedly connected to a piston (5) which is sealed and slides inside the sleeve (4), the sleeve (4) is rotatably connected to a helical anchor (6), the sleeve (4) is provided with a power module for driving the adjacent helical anchor (6) to rotate, the sleeves (4) in the same set are fixedly connected and connected by a conduit (7), the symmetrically distributed conduits (7) are fixedly connected and connected by symmetrically distributed connecting pipes (8), and both 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 to a pressurization module that supplies hydraulic oil into one of the conduits (7). Solenoid valves (9) are provided in both the symmetrically distributed conduits (7) and the symmetrically distributed connecting pipes (8). The solenoid valves (9) in the conduits (7) are located between the solenoid valves (9) in the symmetrically distributed connecting pipes (8).

2. The new telescopic lifting platform chassis for polar scientific research according to claim 1, characterized in that, Four circumferentially evenly distributed limiting blocks (21) are slidably connected inside the mounting shell (2). A spring (22) is fixed between the limiting block (21) and the adjacent mounting shell (2). The four limiting blocks (21) in the same mounting shell (2) are used to fix the adjacent connecting rod (3). A spherical part is provided on the upper side of the connecting rod (3). The four limiting blocks (21) in the same mounting shell (2) are all provided with an arc surface for fitting the spherical part of the adjacent connecting rod (3).

3. The telescopic lifting platform chassis for polar scientific research according to claim 1, characterized in that, The mounting housing (2) is equipped with a pin (23), and the connecting rod (3) is provided with a blind hole for the adjacent pin (23) to be inserted. The pin (23) is used to fix the adjacent connecting rod (3).

4. The telescopic lifting platform chassis for polar scientific research according to claim 1, characterized in that, A pressure sensor (10) is installed inside the conduit (7).

5. The new telescopic lifting platform chassis for polar scientific research according to claim 4, characterized in that, The two pressure sensors (10) are symmetrically distributed and are located on the same side of the solenoid valve (9) inside the conduit (7). The two pressure sensors (10) are symmetrically distributed and are located on both sides of the solenoid valve (9) inside the same connecting pipe (8).

6. The new telescopic lifting platform chassis for polar scientific research according to claim 1, characterized in that, The chassis body (1) is fixedly connected to a uniformly distributed fixing frame (11), the fixing frame (11) is rotatably connected to a rotating ball (12), the rotating ball (12) is slidably connected to a support rod (13), the fixing frame (11) is threadedly connected to a bolt (14), and the support rod (13) is provided with a limiting hole for the adjacent bolt (14) to be inserted.

7. The new telescopic lifting platform chassis for polar scientific research according to claim 6, characterized in that, The fixed frame (11) is provided with symmetrically distributed guide grooves (1101). The support rod (13) is composed of a horizontal bar and a vertical bar. The horizontal bar of the support rod (13) slides in the guide grooves (1101) symmetrically distributed on the adjacent fixed frame (11). The guide groove (1101) is composed of a vertical groove and an inclined groove. A tension spring (15) is fixedly connected between the support rod (13) and the adjacent fixed frame (11).

8. The new telescopic lifting platform chassis for polar scientific research according to claim 7, characterized in that, The inclined groove of the guide groove (1101) gradually approaches the chassis body (1) from top to bottom.

9. The new telescopic lifting platform chassis for polar scientific research according to claim 7, characterized in that, The fixing frame (11) is fixedly connected to a connecting plate (16) located between the guide grooves (1101) symmetrically distributed thereon. The connecting plate (16) is fixedly connected to a first locking block (17) distributed at equal intervals. The support rod (13) is fixedly connected to a second locking block (18). The first locking blocks (17) distributed at equal intervals are all used to limit the adjacent second locking blocks (18).

10. The new telescopic lifting platform chassis for polar scientific research according to claim 9, characterized in that, The diameter of the crossbar of the support rod (13) is smaller than the width of the guide groove (1101), and the lower side of the support rod (13) is made of elastic material.

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