A lifting frame for geological surveying instruments

Abstract

The present invention relates to the technical field of surveying and mapping instruments, and discloses a lifting frame for geological surveying and mapping instruments, which includes a mounting base; a lifting frame connected to the bottom of the mounting base. A plurality of groups of the lifting frames are symmetrically arranged around the center of the mounting base. Each group of the lifting frames includes a connecting rod, a telescopic rod and a supporting part. One end of the connecting rod is rotatably connected to the mounting base, and the other end is connected to the telescopic rod. The supporting part is rotatably connected to the end of the telescopic rod away from the connecting rod; the supporting part includes a rotating seat and a supporting leg. The rotating seat is rotatably connected to the telescopic rod, and the supporting leg is connected to the rotating seat. The rotating seat rotates to drive the supporting leg to rotate and be fixed. The supporting leg can rotate to be parallel to the length direction of the telescopic rod, or the side of the supporting leg facing the ground can rotate to a position parallel to the ground. The terrain adaptability of the lifting frame is improved, and stable support can be achieved in various terrain environments.

Description

Technical Field

[0001] The present invention relates to the technical field of surveying and mapping instruments, and particularly to a lifting frame for geological surveying and mapping instruments. Background Art

[0002] Geological surveying and mapping instruments are instruments and devices designed and manufactured for surveying and mapping operations, including various instruments for orientation, distance measurement, angle measurement, height measurement, mapping, and photogrammetry required for surveying work in the planning, design, construction, and operation management stages of engineering construction. During the use of surveying instruments, they need to be supported and installed by a bracket.

[0003] Most of the brackets for existing surveying instruments use tripods, which usually include three legs. The bottoms of the three legs are in a pointed structure, and the pointed structure is inserted into the ground to achieve stable support for the surveying instrument. Some tripods can also achieve height adjustment by expanding or contracting the three legs or by individually telescoping the legs.

[0004] However, during actual surveying and mapping, the existing tripods may achieve different support effects under different terrain conditions. For example, in areas with hard and flat ground, the tripod can achieve stable support; in areas with soft soil, it may gradually sink into the ground during the surveying process, thus breaking the horizontal state of the surveying instrument and resulting in inaccurate measurement results; in areas with uneven terrain such as slopes and potholes, the stability of the tripod support is poor. Therefore, the existing tripods have low terrain adaptability, which limits their application in different terrain environments. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a lifting frame for geological surveying and mapping instruments.

[0006] The present invention provides a lifting frame for geological surveying and mapping instruments, comprising:

[0007] A mounting base;

[0008] A lifting frame, connected to the bottom of the mounting base. A plurality of groups of the lifting frames are symmetrically arranged around the center of the mounting base. Each group of the lifting frames includes a connecting rod, a telescopic rod, and a supporting part. One end of the connecting rod is rotatably connected to the mounting base, and the other end is connected to the telescopic rod. The supporting part is rotatably connected to the end of the telescopic rod away from the connecting rod.

[0009] The supporting part includes a rotating seat and a leg. The rotating seat is rotatably connected to the telescopic rod, and the leg is connected to the rotating seat. The rotating seat rotates to drive the leg to rotate and be fixed. The leg can rotate to be parallel to the length direction of the telescopic rod, or the side of the leg facing the ground can rotate to be parallel to the ground.

[0010] Optionally, the feet are detachably connected to the rotating seat. An anti-slip pad is provided on one side of the feet facing the ground, and a plurality of anti-slip teeth are arranged at intervals on the opposite side. Removing the feet and changing the connection direction with the rotating seat can make the side of the feet provided with the anti-slip teeth face the ground.

[0011] Optionally, a fine-tuning assembly is provided between the telescopic rod and the connecting rod. The fine-tuning assembly includes:

[0012] A rotating gear is arranged inside the telescopic rod and is rotatably connected to the telescopic rod. External teeth are provided on the outside of the rotating gear, a rack meshing with the external teeth is provided on the connecting rod, and internal teeth are provided on the inside of the rotating gear;

[0013] A driving gear is fixedly connected with a rotating rod on the driving gear. The driving gear is movably connected to the telescopic rod through the rotating rod, and the driving gear can be meshed with or disengaged from the internal teeth through the rotating rod.

[0014] Optionally, the fine-tuning assembly further includes:

[0015] A housing is fixedly connected to the telescopic rod, and the rotating rod is rotatably connected to the housing;

[0016] A fixing piece is fixed on the rotating rod;

[0017] A spring is sleeved on the rotating rod and is located between the fixing piece and the bottom of the housing.

[0018] Optionally, rounded corners are machined on the edges of the internal teeth and the teeth on the driving gear that are close to each other.

[0019] Optionally, it further includes:

[0020] A positioning rod is fixedly connected to the center of the bottom of the mounting seat;

[0021] A sliding sleeve is sleeved on the positioning rod in a sliding manner. A connecting rod is provided between the connecting rod and the sliding sleeve, and both ends of the connecting rod are rotatably connected to the sliding sleeve and the connecting rod respectively.

[0022] Optionally, a plug rod is provided at the bottom end of the positioning rod, and the plug rod is movably inserted into the positioning rod.

[0023] Optionally, the lower end of the plug rod is a tip, and a limiting disc is fixed on one side of the plug rod close to the tip.

[0024] Optionally, it further includes:

[0025] A rotating rod is arranged between the rotating seat and the telescopic rod, and the rotating rod is rotatably connected to the telescopic rod and the rotating seat respectively.

[0026] Optionally, the telescopic rod is slidably connected to the connecting rod, and a positioning bolt for fixing the telescopic rod is provided on the telescopic rod.

[0027] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0028] A lifting frame for a geological surveying instrument provided by an embodiment of the present invention includes a mounting base; a lifting frame, connected to the bottom of the mounting base, and a plurality of groups of lifting frames are symmetrically arranged around the center of the mounting base. Each group of lifting frames includes a connecting rod, a telescopic rod, and a supporting portion. One end of the connecting rod is rotatably connected to the mounting base, and the other end is connected to the telescopic rod. The supporting portion is rotatably connected to the end of the telescopic rod away from the connecting rod; the supporting portion includes a rotating seat and a supporting foot. The rotating seat is rotatably connected to the telescopic rod, and the supporting foot is connected to the rotating seat. The rotation of the rotating seat is used to drive the supporting foot to rotate and be fixed. The supporting foot can be rotated to be parallel to the length direction of the telescopic rod, or the side of the supporting foot facing the ground can be rotated to a position parallel to the ground. When in an area with hard ground and flat terrain, the supporting foot is rotated to a position parallel to the length direction of the telescopic rod and the position of the supporting foot is fixed, so as to realize stable support for the mounting base; when in an area with soft ground, when the side of the supporting foot facing the ground is rotated to a position parallel to the ground, the side of the supporting foot supports on the ground, which can effectively avoid the problem that the supporting foot sinks into the ground during the surveying process and causes inaccurate measurement results; when in an inclined or low-lying area, by adjusting the height of each group of lifting frames, the mounting base is kept horizontal, and the supporting foot is rotated to an appropriate position according to the ground conditions to realize stable support for the mounting base. Thereby, the terrain adaptability of the lifting frame is improved, and stable support can be realized in a variety of terrain environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a lifting frame for a geological surveying instrument provided by an embodiment of the present invention.

[0030] Figure 2 is Figure 1 The enlarged view of part A in

[0031] Figure 3 It is a partial structural cross-sectional view of a lifting frame for a geological surveying instrument provided by an embodiment of the present invention.

[0032] Figure 4 is Figure 3 The enlarged view of part B in

[0033] Description of the reference numerals:

[0034] 1. Mounting base; 2. Lifting frame; 21. Connecting rod; 211. Rack; 22. Telescopic rod; 221. Accommodation cavity; 222. Through hole; 23. Rotating rod; 24. Support part; 241. Rotating seat; 242. Support leg; 243. Anti-slip pad; 244. Anti-slip teeth; 25. Fine-tuning component; 251. Rotating gear; 252. Internal teeth; 253. Driving gear; 254. Rotating rod; 255. Housing; 256. Fixed piece; 257. Spring; 3. Positioning rod; 31. Sliding sleeve; 32. Insert rod; 33. Limiting disk; 4. Connecting rod. Detailed implementation manner

[0035] The following combines the accompanying drawings to describe in detail a specific implementation manner of the present invention, but it should be understood that the protection scope of the present invention is not limited by the specific implementation manner.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the technical solution of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0037] The following illustrates the present invention through several specific embodiments. In order to keep the description below the embodiments of the present invention clear and concise, the detailed description of known functions and known components may be omitted. When any component of the embodiments of the present invention appears in more than one drawing, the component may be represented by the same reference numeral in each drawing.

[0038] As Figure 1 shown, the embodiment of the present invention provides a lifting frame for a geological surveying and mapping instrument, including:

[0039] Mounting base 1;

[0040] Lifting frame 2, connected to the bottom of the mounting base 1. Multiple groups of the lifting frame 2 are symmetrically arranged around the center of the mounting base 1. Each group of the lifting frame 2 includes a connecting rod 21, a telescopic rod 22, and a support part 24. One end of the connecting rod 21 is rotatably connected to the mounting base 1, the other end is connected to the telescopic rod 22, and the support part 24 is rotatably connected to the end of the telescopic rod 22 away from the connecting rod 21;

[0041] The support portion 24 includes a rotating base 241 and a supporting leg 242. The rotating base 241 is rotatably connected to the telescopic rod 22, and the supporting leg 242 is connected to the rotating base 241. The rotation of the rotating base 241 is used to drive the rotation and fixation of the supporting leg 242. The supporting leg 242 can be rotated to be parallel to the length direction of the telescopic rod 22, or the side of the supporting leg 242 facing the ground can be rotated to a position parallel to the ground.

[0042] Specifically, the mounting base 1 is used for mounting and fixing the surveying and mapping instrument. The mounting base 1 can be a circular plate or a square plate. An installation structure adapted to the surveying and mapping instrument can be provided on the mounting base 1 to facilitate the quick connection between the mounting base 1 and the surveying and mapping instrument. For example, it can be achieved by means of snap connection, bolt connection, etc., and the present invention does not make special limitations thereto.

[0043] The lifting frame 2 is connected to the bottom of the mounting base 1. A plurality of groups of lifting frames 2 are symmetrically arranged around the center of the mounting base 1. Each group of lifting frames 2 includes a connecting rod 21, a telescopic rod 22, and a support portion 24. For example, the mounting base 1 is a circular plate structure, and three groups of lifting frames 2 are symmetrically arranged around the center of the mounting base 1. The three groups of lifting frames 2 form a tripod structure to support the mounting base 1. The connecting rod 21 can be composed of two long strip plates. One end of the connecting rod 21 is rotatably connected to the bottom of the mounting base 1; the telescopic rod 22 is slidably arranged between the two long strip plates. The telescopic rod 22 can slide along the length direction of the connecting rod 21. A sliding sleeve is provided at one end of the telescopic rod 22 close to the mounting base 1. The sliding sleeve is fixed to the telescopic rod 22 and sleeved on the connecting rod 21 to facilitate restricting the telescopic rod 22 to slide only along the length direction of the connecting rod 21; the support portion 24 is rotatably connected to the end of the telescopic rod 22 away from the connecting rod 21. The support portion 24 can have a pointed end structure to facilitate fixing the lifting frame 2 to the ground.

[0044] Among them, the support portion 24 includes a rotating base 241 and a supporting leg 242. The rotating base 241 is rotatably connected to the telescopic rod 22 and is supported and connected to the rotating base 241. The end of the supporting leg 242 is a pointed structure. When the rotating base 241 rotates, it can drive the rotation of the supporting leg 242, and after rotating to an appropriate position, it can be fixed to prevent the rotating base 241 from rotating any further. The supporting leg 242 can be rotated to a position parallel to the length direction of the telescopic rod 22, or the side of the supporting leg 242 facing the ground can be rotated to a position parallel to the ground. A fastening bolt can be provided on the rotating shaft of the rotating base 241 to fix the rotating base 241 after it rotates to an appropriate position, preventing the rotating base 241 from rotating any further. Of course, the method for fixing the position of the rotating base 241 can also be snap fixation, pin fixation, etc., and the present invention does not make special limitations thereto.

[0045] When in an area with hard and flat ground, the outrigger 242 is rotated to a position parallel to the length direction of the telescopic rod 22, and the position of the outrigger 242 is fixed, so as to realize the stable support of the mounting seat 1; when in an area with soft ground, when the side of the outrigger 242 facing the ground is rotated to a position parallel to the ground, the side surface of the outrigger 242 supports on the ground, which can effectively avoid the problem that the outrigger 242 sinks into the ground during the surveying process, resulting in inaccurate measurement results; when in an inclined or low-lying area, by adjusting the height of each lifting frame 2, the mounting seat 1 is kept horizontal, and the outrigger 242 is rotated to an appropriate position according to the ground conditions to realize the stable support of the mounting seat 1.

[0046] Exemplarily, the telescopic rod 22 is slidably connected to the connecting rod 21, and a positioning bolt for fixing the telescopic rod 22 is provided on the telescopic rod 22. After sliding the telescopic rod 22 to an appropriate position, the positioning bolt is screwed to fix the telescopic rod 22 to the connecting rod 21.

[0047] In the above embodiment, when the side surface of the outrigger 242 facing the ground is used for support, if the friction force between the ground and the side surface of the outrigger 242 is insufficient, the outrigger 242 may slide, affecting the stability of the lifting frame 2.

[0048] Therefore, the embodiment of the present invention provides an improvement method.

[0049] As Figure 1 、 Figure 2 shown, the outrigger 242 is detachably connected to the rotating seat 241. An anti-slip pad 243 is provided on the side of the outrigger 242 facing the ground, and a plurality of anti-slip teeth 244 are arranged at intervals on the opposite side. Removing the outrigger 242 and changing the connection direction with the rotating seat 241 can make the side of the outrigger 242 provided with the anti-slip teeth 244 face the ground.

[0050] Specifically, the anti-slip pad 243 can be a rubber pad, a cloth pad, etc. An anti-slip pad 243 is provided on the side of the support leg 242 facing the ground. The support leg 242 is detachably connected to the rotating base 241, so that the installation direction of the support leg 242 can be changed. The side of the support leg 242 provided with the anti-slip pad 243 can be installed facing the ground or away from the ground. When using the side of the support leg 242 for support, the anti-slip pad 243 can increase the friction between the support leg 242 and the ground, effectively preventing the support leg 242 from sliding during the support process, thereby improving the stability of the lifting frame 2. A plurality of anti-slip teeth 244 are arranged at intervals on the side of the support leg 242 opposite to the anti-slip pad 243. When the anti-slip effect of the anti-slip pad 243 is not good, the support leg 242 can be detached and the side provided with the anti-slip teeth 244 can be installed facing the ground. The anti-slip teeth 244 can be inserted into the ground, which can improve the friction between the support leg 242 and the ground and prevent the support leg 242 from sinking into the ground. Among them, under different terrain conditions, the anti-slip pad 243 or the anti-slip teeth 244 can be selected according to actual needs. For example, in a muddy area, the anti-slip pad 243 can be used, and in an area with soft soil, the anti-slip teeth 244 can be used.

[0051] In the above embodiment, the height of the lifting frame 2 can only be adjusted by sliding the telescopic rod 22. When fine adjustment is required, it is not convenient to adjust and errors are likely to occur.

[0052] Therefore, the embodiment of the present invention provides an improved method.

[0053] As Figure 1 、 Figure 3 、 Figure 4 shown, a fine adjustment assembly 25 is provided between the telescopic rod 22 and the connecting rod 21. The fine adjustment assembly 25 includes:

[0054] A rotating gear 251 is provided inside the telescopic rod 22 and is rotatably connected to the telescopic rod 22. External teeth are provided on the outside of the rotating gear 251, and a rack 211 meshing with the external teeth is provided on the connecting rod 21. Internal teeth 252 are provided inside the rotating gear 251;

[0055] A driving gear 253 is provided. A rotating rod 254 is fixedly connected to the driving gear 253. The driving gear 253 is movably connected to the telescopic rod 22 through the rotating rod 254. The driving gear 253 can be engaged or disengaged with the internal teeth 252 through the rotating rod 254.

[0056] Specifically, a receiving cavity 221 is provided inside the telescopic rod 22. A rotating gear 251 is rotatably connected in the receiving cavity 221. External teeth are provided on the outside of the rotating gear 251, and a rack 211 meshing with the external teeth is provided on the connecting rod 21. For example, a fixed rod is fixed at the bottom of the receiving cavity 221, a bearing is connected to the fixed rod, and the rotating gear 251 is fixedly connected to the outer ring of the bearing. When the telescopic rod 22 slides along the connecting rod 21, the rotating gear 251 meshes with the rack 211 and idles.

[0057] Furthermore, internal teeth 252 are provided inside the rotating gear 251. The driving gear 253 is movably connected to the telescopic rod 22 through a rotating rod 254. The driving gear 253 can be meshed with or disengaged from the internal teeth 252 of the rotating gear 251 through the rotating rod 254. Exemplarily, a through hole 222 communicating with the receiving cavity 221 is provided in the telescopic rod 22. The driving gear 253 is located in the through hole 222. The rotating rod 254 is rotatably connected to the telescopic rod 22 and can drive the driving gear 253 to slide along the axis of the through hole 222 in a direction close to or away from the receiving cavity 221. When it is necessary to adjust the height of the lifting frame 2 over a large range, the driving gear 253 is located outside the receiving cavity 221, and the driving gear 253 is not meshed with the internal teeth 252 of the rotating gear 251. Sliding the telescopic rod 22 can adjust the height of the lifting frame 2. When it is necessary to finely adjust the height of the lifting frame 2, by pressing the rotating rod 254, the driving gear 253 is meshed with the internal teeth 252. When the rotating rod 254 is rotated, the rotating gear 251 can be driven to rotate through the driving gear 253. The rotating gear 251 meshes with the rack 211 on the connecting rod 21, so that the telescopic rod 22 and the connecting rod 21 can be driven to slide relative to each other, realizing the fine adjustment of the height of the lifting frame 2.

[0058] Still further, the fine adjustment assembly 25 further includes:

[0059] A housing 255, fixedly connected to the telescopic rod 22, and the rotating rod 254 is rotatably connected to the housing 255;

[0060] A fixing piece 256, fixed on the rotating rod 254;

[0061] A spring 257, sleeved on the rotating rod 254 and located between the fixing piece 256 and the bottom of the housing 255.

[0062] Specifically, the outer shell 255 is fixed to the telescopic rod 22. The outer shell 255 has a housing structure with an open top. A hole is provided at the bottom of the outer shell 255 for the rotating rod 254 to pass through, and the rotating rod 254 is rotatably connected to the bottom of the outer shell 255. The fixing piece 256 is located in the open part of the outer shell 255. The rotating rod 254 passes through the fixing piece 256 and is fixedly connected to the fixing piece 256. The spring 257 is sleeved on the rotating rod 254 and is located between the fixing piece 256 and the bottom of the outer shell 255. When fine adjustment is required, press the rotating rod 254 in the direction close to the accommodation cavity 221. The rotating rod 254 drives the driving gear 253 to move into the accommodation cavity 221 and mesh with the internal teeth 252. At the same time, it drives the fixing piece 256 to move towards the bottom of the outer shell 255. When the fixing piece 256 moves, it compresses the spring 257. Rotate the rotating rod 254 to drive the rotating gear 251 to rotate, thereby finely adjusting the height of the lifting frame 2. After the adjustment is completed, release the rotating rod 254. Under the action of the spring 257, it drives the rotating gear to disengage from the internal teeth 252.

[0063] Furthermore, rounded corners are machined on the edges of the teeth of the driving gear 253 that are close to each other. When the rotating rod 254 is pushed to make the driving gear 253 mesh with the internal teeth 252, it is convenient for the driving gear 253 to mesh with the internal teeth 252, which is beneficial to improving the adjustment accuracy.

[0064] In an embodiment of the present invention, as Figure 1 、 Figure 3 shown, the lifting frame of the geological surveying instrument further includes a positioning rod 3 and a sliding sleeve 31. The positioning rod 3 is fixedly connected to the center of the bottom of the mounting base 1; the sliding sleeve 31 is arranged on the positioning rod 3. A connecting rod 4 is provided between the connecting rod 21 and the sliding sleeve 31. Both ends of the connecting rod 4 are rotatably connected to the sliding sleeve 31 and the connecting rod 21 respectively.

[0065] Specifically, the positioning rod 3 is fixed to the center of the bottom of the mounting base 1. The sliding sleeve 31 is arranged on the positioning rod 3. When the connecting rod 21 rotates and unfolds, the sliding sleeve 31 slides. Multiple connecting rods 21 are all connected to the sliding sleeve 31 through the connecting rod 4, so that multiple groups of connecting rods 21 can be kept rotating at the same angle simultaneously, which is beneficial to improving the stability of the connecting rod 21.

[0066] At the same time, a plug rod 32 is provided at the bottom end of the positioning rod 3. The plug rod 32 is movably inserted into the positioning rod 3. When supporting, first slide the plug rod 32 out of the positioning rod 3 and fix it. After selecting a suitable surveying position, insert the plug rod 32 into the ground for preliminary positioning, and then rotate the lifting frame 2 for support, which is convenient for operation.

[0067] Further, the lower end of the plug rod 32 is a tip, which is convenient for inserting into the ground for positioning. A limit disk 33 is fixed on one side of the plug rod 32 close to the tip, which can prevent the plug rod 32 from penetrating deep into the ground.

[0068] In an exemplary embodiment of the present invention, asFigure 1 , Figure 3 As shown in Figure 3 , the lifting frame 2 of the geological surveying instrument further includes a rotating rod 23. The rotating rod 23 is arranged between the rotating seat 241 and the telescopic rod 22, and the rotating rod 23 is rotatably connected to both the telescopic rod 22 and the rotating seat 241. The rotating rod 23 can be rotated to an appropriate angle and then fixed. In areas with sloping terrain or obstacles on the ground, it is not convenient to fully expand the lifting frame 2. Therefore, the rotating rod 23 can be rotated to an appropriate position so that the support feet 242 can achieve stable support, further improving the terrain adaptability of the lifting frame 2.

[0069] The above are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A lifting frame (2) for geological surveying instruments, characterized in that Comprising: Mounting base (1); Lifting frame (2), connected to the bottom of the mounting base (1). A plurality of groups of the lifting frames (2) are symmetrically arranged around the center of the mounting base (1). Each group of the lifting frames (2) includes a connecting rod (21), a telescopic rod (22) and a supporting part (24). One end of the connecting rod (21) is rotatably connected to the mounting base (1), and the other end is connected to the telescopic rod (22). The supporting part (24) is rotatably connected to the end of the telescopic rod (22) away from the connecting rod (21); The supporting part (24) includes a rotating seat (241) and a supporting leg (242). The rotating seat (241) is rotatably connected to the telescopic rod (22), and the supporting leg (242) is connected to the rotating seat (241). The rotation of the rotating seat (241) is used to drive the rotation and fixation of the supporting leg (242). The supporting leg (242) can be rotated to be parallel to the length direction of the telescopic rod (22), or the side of the supporting leg (242) facing the ground can be rotated to a position parallel to the ground; A fine-tuning assembly (25) is arranged between the telescopic rod (22) and the connecting rod (21). The fine-tuning assembly (25) includes: A rotating gear (251), arranged inside the telescopic rod (22) and rotatably connected to the telescopic rod (22). External teeth are arranged on the outside of the rotating gear (251). A rack (211) meshing with the external teeth is arranged on the connecting rod (21). Internal teeth (252) are arranged on the inside of the rotating gear (251); A driving gear (253), a rotating rod (254) is fixedly connected to the driving gear (253). The driving gear (253) is movably connected to the telescopic rod (22) through the rotating rod (254). The driving gear (253) can be meshed with or disengaged from the internal teeth (252) through the rotating rod (254); The fine-tuning assembly (25) further includes: A housing (255), fixedly connected to the telescopic rod (22). The rotating rod (254) is rotatably connected to the housing (255); A fixing piece (256), fixed to the rotating rod (254); A spring (257), sleeved on the rotating rod (254) and located between the fixing piece (256) and the bottom of the housing (255).

2. The lifting frame (2) of the geological surveying and mapping instrument according to claim 1, characterized in that, The supporting leg (242) is detachably connected to the rotating seat (241). An anti-slip pad (243) is arranged on the side of the supporting leg (242) facing the ground, and a plurality of anti-slip teeth (244) are arranged at intervals on the opposite side. Removing the supporting leg (242) and changing the connection direction with the rotating seat (241) can make the side of the supporting leg (242) provided with the anti-slip teeth (244) face the ground.

3. The lifting frame (2) of the geological surveying and mapping instrument according to claim 1, characterized in that, Round corners are processed on the edges of the internal teeth (252) and the teeth on the driving gear (253) that are close to each other; 4. The lifting frame (2) of the geological surveying and mapping instrument according to claim 1, characterized in that, Further comprising: A positioning rod (3), fixedly connected to the center of the bottom of the mounting base (1); A sliding sleeve (31) is provided on the positioning rod (3). A connecting rod (4) is provided between the connecting rod (21) and the sliding sleeve (31), and two ends of the connecting rod (4) are respectively rotatably connected to the sliding sleeve (31) and the connecting rod (21).

5. The lifting frame (2) of the geological surveying and mapping instrument according to claim 4, characterized in that, A plug rod (32) is provided at the bottom end of the positioning rod (3), and the plug rod (32) is movably inserted into the positioning rod (3).

6. The lifting frame (2) of the geological surveying and mapping instrument according to claim 5, characterized in that, The lower end of the plug rod (32) is a tip, and a limiting disc (33) is fixed to one side of the plug rod (32) close to the tip.

7. The lifting frame (2) of the geological surveying and mapping instrument according to claim 1, characterized in that, It further includes: A rotating rod (23) is provided between the rotating seat (241) and the telescopic rod (22), and the rotating rod (23) is rotatably connected to the telescopic rod (22) and the rotating rod (23) is rotatably connected to the rotating seat (241).

8. The lifting frame (2) of the geological surveying and mapping instrument according to claim 7, characterized in that, The telescopic rod (22) is slidably connected to the connecting rod (21), and a positioning bolt for fixing the telescopic rod (22) is provided on the telescopic rod (22).

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