Engineering surveying level gauge supporting device

Abstract

The invention discloses an engineering surveying level gauge supporting device, and relates to the technical field of engineering surveying, the engineering surveying level gauge supporting device comprises a supporting cylinder, a detection device and an adjusting device, a supporting ring is fixedly installed on the surface of the supporting cylinder, a sleeve is installed on the surface of the supporting ring in a hinged mode, and supporting legs are slidably installed on the surface of the sleeve; the bottom of each supporting leg is fixedly provided with a supporting plate, the inner wall of the supporting cylinder is slidably provided with a lifting rod, the top of the lifting rod is fixedly provided with a leveling device, the detection device comprises a circular plate, an elastic piece, a detection plate, a rotating rod, an auxiliary plate, a limiting rod and a hollow frame, and the auxiliary plate rotates to assist in supporting the supporting device; the round plate is fixedly installed on the surface of the sleeve, an elastic piece is arranged between the round plate and the supporting leg, and the anti-sinking device can prevent the supporting device of the leveling device from sinking or sinking into the muddy ground, so that the stability of the leveling device is kept, and the accuracy of a measurement result is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering surveying, and specifically to a support device for an engineering surveying level. Background Technique

[0002] The support device for an engineering surveying level usually consists of parts such as a tripod, a level base, an adjusting device, and a fixing device.

[0003] The patent with the patent announcement number CN212718859U relates to a support device for an engineering surveying level, belonging to the technical field of engineering surveying. This patent includes a support column, a foot support, a folding rod, a load-bearing platform, and a fixing platform. The foot support is installed on the circumferential side surface of the support column. One end of the folding rod is connected to the support column, and the other end of the folding rod is connected to the foot support. One end of the support column is welded to the lower surface of the load-bearing platform, and the fixing platform is installed on the upper surface of the load-bearing platform. The foot support includes a foot support body and a rubber sleeve, and the rubber sleeve is connected to one end of the foot support body. The load-bearing platform includes a load-bearing platform body and a rotating platform. An installation groove is provided on one surface of the load-bearing platform body, and the rotating platform is rotationally matched with the installation groove. For the support device for an engineering surveying level in this patent, by setting the folding rod, on the one hand, the stability of the entire structure is strengthened, and on the other hand, at the end of the measurement, it is convenient for the contraction and transportation of the support device, increasing the convenience.

[0004] In the above patent, by setting the folding rod, the stability of the entire structure is strengthened, but an anti-sinking device is not provided. The muddy environment makes it more difficult to finely adjust and calibrate the level. The lack of an anti-sinking device may lead to frequent adjustments, affecting the measurement efficiency and accuracy. At the same time, it may cause the level to be unstable and difficult to maintain horizontal, thus affecting the measurement accuracy. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a support device for an engineering surveying level, which solves the problems raised in the above background technique.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: An engineering survey level support device includes a support cylinder, and also includes a detection device and an adjustment device. Among them, a support ring is fixedly installed on the surface of the support cylinder, a sleeve is hingedly installed on the surface of the support ring, a support leg is slidably installed on the surface of the sleeve, a support plate is fixedly installed at the bottom of the support leg, a lifting rod is slidably installed on the inner wall of the support cylinder, and a leveling device is fixedly installed at the top of the lifting rod. Among them, the detection device includes a circular plate, a spring piece, a detection plate, a rotating rod, an auxiliary plate, a limiting rod and a hollow frame. The auxiliary plate rotates to assist in supporting the support device. The circular plate is fixedly installed on the surface of the sleeve, a spring piece is arranged between the circular plate and the support leg, the detection plate is slidably installed on the surface of the support leg, the rotating rod is rotatably installed on the surface of the support leg, the auxiliary plate is fixedly installed on the surface of the rotating rod, the limiting rod is fixedly installed on the surface of the rotating rod, and the hollow frame is fixedly installed on the top of the detection plate. The anti-sinking device can prevent the support device of the leveling device from sinking or getting stuck in muddy ground, thereby maintaining the stability of the leveling device and helping to ensure the accuracy of the measurement results.

[0007] According to the above technical solution, a first spring is arranged between the sleeve and the support leg, a second spring is arranged between the detection plate and the support leg, a third spring is arranged between the rotating rod and the support leg, and the limiting rod contacts the inner wall top of the hollow frame. The circular plate buffers the support device under the elastic force of the spring piece and the first spring. The buffer material can absorb ground vibrations and reduce the degree to which these interference factors are transmitted to the leveling device, which helps to improve the stability and accuracy of the measurement.

[0008] According to the above technical solution, the adjustment device includes a placement plate, a rectangular plate, a gear, a rack and a limiting frame. Since the number of teeth of the gear and the rack is relatively large, the adjustment of the height of the leveling device can be more precise. The placement plate is fixedly installed on the surface of the support ring, the rectangular plate is fixedly installed on the top of the placement plate, the gear is rotatably installed on the surface of the rectangular plate, a lifting groove is formed on the surface of the lifting rod, the rack is fixedly installed on the inner wall of the lifting groove, a rectangular groove is formed on the surface of the rectangular plate, and the limiting frame is slidably installed at the bottom of the inner wall of the rectangular groove. The design with a relatively large number of teeth allows for smaller adjustments, thereby improving the accuracy of height adjustment. The surveyor can more accurately adjust the leveling device to the required height, thereby improving the accuracy of the measurement.

[0009] According to the above technical solution, a limiting plate is fixedly installed on the inner wall of the limiting frame, a protection rod is slidably installed on the surface of the rectangular plate, a fourth spring is arranged between the limiting frame and the rectangular groove, the gear meshes with the rack, and a fifth spring is arranged between the protection rod and the rectangular plate. It is necessary to first manually pull the protection rod away from the placement plate to release the limit on the limiting plate. The protection rod helps to protect the leveling device itself from the possibility of over-adjustment or improper use.

[0010] According to the above technical solution, it further includes a speed reduction device and a scraping device. The speed reduction device includes a connecting rod, a connecting plate, a fixed rod, an arc-shaped panel, and a limiting disk. The slow movement of the lifting rod enables the leveling device to slowly adjust its height. The connecting rod is fixedly installed at the bottom of the lifting rod, the connecting plate is fixedly installed at the bottom of the connecting rod, the fixed rod is fixedly installed on the surface of the connecting plate, the arc-shaped panel is slidably installed on the surface of the fixed rod, the limiting disk is fixedly installed at the top of the fixed rod, and a connection hole is provided on the surface of the connecting plate. The slow height adjustment enables the surveyor to more carefully adjust the height of the leveling device to adapt to different terrains or working conditions, which is very helpful for making delicate adjustments in a complex measurement environment.

[0011] According to the above technical solution, arc-shaped holes are provided on the surface of the arc-shaped panel, and a sixth spring is provided between the fixed rod and the arc-shaped panel. The arc-shaped panel can be driven to reset by the sixth spring.

[0012] According to the above technical solution, the scraping device includes a scraping rod, an arc-shaped block, and an extrusion rod. The scraping rod moves downward to contact the mirror surface of the leveling device to scrape and clean the mirror surface. The scraping rod is slidably installed on the surface of the leveling device, a scraping groove is provided on the surface of the scraping rod, the arc-shaped block is fixedly installed on the inner wall of the scraping groove, the extrusion rod is fixedly installed on the top of the support ring, the scraping rod is elastic, and the arc-shaped block is elastic. The cleaning of the scraping rod can prevent dust, dirt, or scratches from being introduced into the field of view of the leveling device, which helps to ensure a clear and accurate field of view during measurement.

[0013] According to the above technical solution, a convex block is fixedly installed on the surface of the leveling device, a vibrating piece is fixedly installed on the surface of the scraping rod, the convex block contacts the vibrating piece, and a seventh spring is provided between the scraping rod and the leveling device. The vibration of the convex block drives the vibration of the lens of the leveling device, and the vibration of the lens of the leveling device further cleans the surface of the lens.

[0014] The present invention provides a support device for an engineering survey level. It has the following beneficial effects: (1) For this support device for an engineering survey level, by rotating the auxiliary plate to contact the muddy road surface, the contact area between the support device and the muddy road surface is increased. The rotation of the auxiliary plate provides auxiliary support for the support device, and the anti-sinking device can prevent the support device of the leveling device from sinking or getting stuck in the muddy ground, thereby maintaining the stability of the leveling device, which helps to ensure the accuracy of the measurement results. At the same time, when the leveling device contacts the ground, the round plate buffers the support device under the elastic force of the elastic piece and the first spring. The buffer material can absorb ground vibrations and shocks, reducing the degree to which these interference factors are transmitted to the leveling device, which helps to improve the stability and accuracy of the measurement.

[0015] (2) When the height of the leveling device of this engineering survey level support device needs to be adjusted, it is necessary to first manually pull the protection rod to move away from the placement plate to release the limit on the limiting plate. The protection rod helps protect the leveling device itself from the possibility of over-adjustment or improper use, can extend the life of the leveling device and reduce maintenance costs. After the limit on the gear by the limiting frame is released, manually pull the lifting rod to move to adjust the height of the leveling device. Since the number of teeth of the gear and the rack is large, the height adjustment of the leveling device can be more precise. The design with a large number of teeth allows for smaller adjustments, thereby improving the accuracy of height adjustment. The surveyor can more accurately adjust the leveling device to the required height, thus improving the accuracy of measurement.

[0016] (3) For this engineering survey level support device, by slowly moving the connecting rod, the lifting rod moves slowly. The slow movement of the lifting rod enables the leveling device to slowly adjust its height. The slow height adjustment allows the surveyor to more carefully adjust the height of the leveling device to adapt to different terrains or working conditions, which is very helpful for making delicate adjustments in complex survey environments. At the same time, when storing the leveling device, the gas can flow quickly through the connecting hole, enabling the connecting plate and the connecting rod to move quickly. The quick movement of the connecting rod allows the lifting rod and the leveling device to be quickly stored. The quick storage feature enables the leveling device to be quickly and conveniently stored when not in use, which is beneficial for the storage and maintenance of the instrument.

[0017] (4) For this engineering survey level support device, the scraping rod moves downward to contact the mirror surface of the leveling device to scrape and clean the mirror surface. The cleaning of the scraping rod can prevent dust, dirt or scratches from being introduced into the field of view of the leveling device, helping to ensure a clear and accurate field of view during measurement. At the same time, the vibrating piece moves downward to contact the convex block, generating vibration through friction. The vibration of the convex block drives the vibration of the lens of the leveling device, and the vibration of the lens of the leveling device further cleans the surface of the lens. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall sectional structure of the present invention; Figure 3 It is a schematic diagram of the position structure of the leveling device and the scraping rod of the present invention; Figure 4 It is a schematic diagram of the position structure of the sleeve and the circular plate of the present invention; Figure 5 For the present invention Figure 4 It is an enlarged schematic diagram of the structure of part A in the present invention; Figure 6 For the present invention Figure 3 It is an enlarged schematic diagram of the structure of part B in the present invention; Figure 7 For the present invention Figure 2 Schematic enlarged view of part C structure in the present invention; Figure 8 For the present invention Figure 2 Schematic enlarged view of part D structure in the present invention.

[0019] In the figure: 1, support cylinder; 2, support ring; 3, sleeve; 4, support leg; 5, support plate; 61, circular plate; 62, elastic sheet; 63, detection plate; 64, rotating rod; 65, auxiliary plate; 66, limiting rod; 67, hollow frame; 71, placement plate; 72, rectangular plate; 73, gear; 74, rack; 75, limiting frame; 76, limiting plate; 77, protection rod; 81, connecting rod; 82, connecting plate; 83, fixed rod; 84, arc-shaped panel; 85, limiting disc; 91, scraping rod; 92, arc-shaped block; 93, extrusion rod; 94, convex block; 95, vibrating sheet; 10, lifting rod; 11, leveling device. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-6, an embodiment of the present invention is: an engineering survey level support device, including a support cylinder 1, and further including a detection device and an adjustment device. Among them, a support ring 2 is fixedly installed on the surface of the support cylinder 1, a sleeve 3 is hingedly installed on the surface of the support ring 2, a support leg 4 is slidably installed on the surface of the sleeve 3, a support plate 5 is fixedly installed at the bottom of the support leg 4, a lifting rod 10 is slidably installed on the inner wall of the support cylinder 1, and a leveling device 11 is fixedly installed at the top of the lifting rod 10. Among them, the detection device includes a circular plate 61, a spring piece 62, a detection plate 63, a rotating rod 64, an auxiliary plate 65, a limiting rod 66 and a hollow frame 67. When the hollow frame 67 moves upward to release the limitation on the limiting rod 66, the rotation of the rotating rod 64 drives the rotation of the auxiliary plate 65. The rotation of the auxiliary plate 65 contacts the muddy road surface, increasing the contact area between the support device and the muddy road surface. The rotation of the auxiliary plate 65 provides auxiliary support for the support device. The circular plate 61 is fixedly installed on the surface of the sleeve 3, a spring piece 62 is arranged between the circular plate 61 and the support leg 4, the detection plate 63 is slidably installed on the surface of the support leg 4, the rotating rod 64 is rotatably installed on the surface of the support leg 4, the auxiliary plate 65 is fixedly installed on the surface of the rotating rod 64, the limiting rod 66 is fixedly installed on the surface of the rotating rod 64, and the hollow frame 67 is fixedly installed on the top of the detection plate 63. The anti-sinking device can prevent the support device of the leveling device 11 from sinking or getting stuck in the muddy ground, thereby maintaining the stability of the leveling device 11 and helping to ensure the accuracy of the measurement results.

[0022] A first spring is arranged between the sleeve 3 and the support leg 4, a second spring is arranged between the detection plate 63 and the support leg 4, a third spring is arranged between the rotating rod 64 and the support leg 4, and the limiting rod 66 contacts the inner wall top of the hollow frame 67. When the leveling device 11 contacts the ground, the circular plate 61 buffers the support device under the elastic force of the spring piece 62 and the first spring. The buffer material can absorb ground vibrations and shocks, reducing the degree to which these interference factors are transmitted to the leveling device 11, which helps to improve the stability and accuracy of the measurement.

[0023] The adjustment device includes a placement plate 71, a rectangular plate 72, a gear 73, a rack 74 and a limiting frame 75. Manually pulling the lifting rod 10 to move can adjust the height of the leveling device 11. Since the number of teeth of the gear 73 and the rack 74 is relatively large, the adjustment of the height of the leveling device 11 can be more precise. The placement plate 71 is fixedly installed on the surface of the support ring 2, the rectangular plate 72 is fixedly installed on the top of the placement plate 71, the gear 73 is rotatably installed on the surface of the rectangular plate 72, a lifting groove is formed on the surface of the lifting rod 10, the rack 74 is fixedly installed on the inner wall of the lifting groove, a rectangular groove is formed on the surface of the rectangular plate 72, and the limiting frame 75 is slidably installed at the bottom of the inner wall of the rectangular groove. The design with a relatively large number of teeth allows for smaller adjustments, thereby improving the accuracy of height adjustment. The surveyor can more accurately adjust the leveling device 11 to the required height, thus improving the accuracy of the measurement.

[0024] A limiting plate 76 is fixedly installed on the inner wall of the limiting frame 75. A protection rod 77 is slidably installed on the surface of the rectangular plate 72. A fourth spring is provided between the limiting frame 75 and the rectangular groove. The gear 73 meshes with the rack 74. A fifth spring is provided between the protection rod 77 and the rectangular plate 72. When the height of the leveling device 11 needs to be adjusted, it is necessary to first manually pull the protection rod 77 to move away from the placement plate 71 to release the limit on the limiting plate 76. The protection rod 77 helps to protect the leveling device 11 itself from the possibility of over-adjustment or improper use.

[0025] When this embodiment works, if the leveling device 11 encounters a muddy road surface during installation, the support plate 5 will first contact the road surface. If there is a lot of silt on the muddy road surface, the support plate 5 will sink under the action of the gravity of the device itself. The sinking of the support plate 5 drives the detection plate 63 to move downward. The detection plate 63 moves downward and contacts the silt and moves upward under the reaction force of the silt. The upward movement of the detection plate 63 drives the hollow frame 67 to move upward. The upward movement of the hollow frame 67 releases the limit on the limiting rod 66. After the limit of the hollow frame 67 on the limiting rod 66 is released, the rotating rod 64 rotates under the elastic force of the third spring. The rotation of the rotating rod 64 drives the auxiliary plate 65 to rotate. The rotation of the auxiliary plate 65 contacts the muddy road surface and increases the contact area between the support device and the muddy road surface. The rotation of the auxiliary plate 65 provides auxiliary support for the support device. At the same time, when the leveling device 11 contacts the ground, the round plate 61 buffers the support device under the elastic force of the elastic piece 62 and the first spring.

[0026] When the height of the leveling device 11 needs to be adjusted, it is necessary to first manually pull the protection rod 77 to move away from the placement plate 71. The movement of the protection rod 77 releases the limit on the limiting plate 76. After the limit of the protection rod 77 on the limiting plate 76 is released, manually pull the limiting frame 75 to move towards the pressing rod 93. The movement of the limiting frame 75 releases the limit on the gear 73. After the limit of the limiting frame 75 on the gear 73 is released, manually pull the lifting rod 10 to move to adjust the height of the leveling device 11. Since the number of teeth of the gear 73 and the rack 74 is large, the adjustment of the height of the leveling device 11 can be more precise.

[0027] Please refer to Figures 1-8, on the basis of the above embodiments, in another embodiment of the present invention, a deceleration device and a scraping device are further included. The deceleration device includes a connecting rod 81, a connecting plate 82, a fixing rod 83, an arc-shaped panel 84, and a limiting disc 85. The slow movement of the connecting rod 81 causes the slow movement of the lifting rod 10. The slow movement of the lifting rod 10 enables the leveling device 11 to slowly adjust its height. The connecting rod 81 is fixedly installed at the bottom of the lifting rod 10, the connecting plate 82 is fixedly installed at the bottom of the connecting rod 81, the fixing rod 83 is fixedly installed on the surface of the connecting plate 82, the arc-shaped panel 84 is slidably installed on the surface of the fixing rod 83, and the limiting disc 85 is fixedly installed at the top of the fixing rod 83. A connection hole is provided on the surface of the connecting plate 82. The slow height adjustment enables the surveyor to more carefully adjust the height of the leveling device 11 to adapt to different terrains or working conditions, which is very helpful for making delicate adjustments in a complex measurement environment.

[0028] An arc-shaped hole is provided on the surface of the arc-shaped panel 84. A sixth spring is provided between the fixing rod 83 and the arc-shaped panel 84, and the arc-shaped panel 84 can be driven to reset by the sixth spring.

[0029] The scraping device includes a scraping rod 91, an arc-shaped block 92, and an extrusion rod 93. The upward movement of the arc-shaped block 92 in contact with the extrusion rod 93 causes the downward movement of the scraping rod 91. The downward movement of the scraping rod 91 in contact with the mirror surface of the leveling device 11 scrapes and cleans the mirror surface. The scraping rod 91 is slidably installed on the surface of the leveling device 11. A scraping groove is provided on the surface of the scraping rod 91. The arc-shaped block 92 is fixedly installed on the inner wall of the scraping groove. The extrusion rod 93 is fixedly installed on the top of the support ring 2. The scraping rod 91 is elastic, and the arc-shaped block 92 is elastic. The cleaning of the scraping rod 91 can prevent dust, dirt, or scratches from being introduced into the field of view of the leveling device 11, which helps to ensure a clear and accurate field of view during measurement.

[0030] A convex block 94 is fixedly installed on the surface of the leveling device 11, and a vibrating piece 95 is fixedly installed on the surface of the scraping rod 91. The convex block 94 is in contact with the vibrating piece 95. A seventh spring is provided between the scraping rod 91 and the leveling device 11. The vibration of the convex block 94 drives the vibration of the lens of the leveling device 11, and the vibration of the lens of the leveling device 11 further cleans the surface of the lens.

[0031] When the lifting rod 10 is manually pulled upward during the operation of this embodiment, the upward movement of the lifting rod 10 drives the connecting rod 81 to move upward, the upward movement of the connecting rod 81 drives the connecting plate 82 to move upward, the upward movement of the connecting plate 82 drives the arc-shaped panel 84 to move upward, and the upward movement of the arc-shaped panel 84 is tightly attached to the surface of the connecting plate 82 under the action of the negative pressure of the gas inside the support cylinder 1. The fact that the arc-shaped panel 84 is tightly attached to the surface of the connecting plate 82 makes the gas inside the support cylinder 1 can only flow slowly through the arc-shaped holes. The slow flow of the gas inside the support cylinder 1 makes the connecting plate 82 and the connecting rod 81 move slowly, the slow movement of the connecting rod 81 makes the lifting rod 10 move slowly, and the slow movement of the lifting rod 10 enables the leveling device 11 to slowly adjust the height. At the same time, after the measurement is completed, when the lifting rod 10 is manually pulled downward to store the level, the downward movement of the lifting rod 10 drives the connecting rod 81 and the connecting plate 82 to move downward, the downward movement of the connecting plate 82 drives the arc-shaped panel 84 to move downward, and the downward movement of the arc-shaped panel 84 cannot be tightly attached to the surface of the connecting plate 82 under the action of the negative pressure of the gas inside the support cylinder 1. The fact that the arc-shaped panel 84 cannot be tightly attached to the surface of the connecting plate 82 makes the gas inside the support cylinder 1 can flow quickly through the connecting holes. The fact that the gas can flow quickly through the connecting holes enables the connecting plate 82 and the connecting rod 81 to move quickly, and the fact that the connecting rod 81 can move quickly enables the lifting rod 10 and the leveling device 11 to be quickly stored.

[0032] When the lifting rod 10 is manually pulled upward, it drives the scraping rod 91 to move upward. The upward movement of the scraping rod 91 drives the arc-shaped block 92 to move upward. When the arc-shaped block 92 moves upward and contacts the extrusion rod 93, it makes the scraping rod 91 move downward. The downward movement of the scraping rod 91 contacts the mirror surface of the leveling device 11 to scrape and clean the mirror surface. At the same time, the downward movement of the scraping rod 91 drives the vibrating piece 95 to move downward. When the vibrating piece 95 moves downward and contacts the convex block 94, friction generates vibration, and the vibration of the convex block 94 drives the lens of the leveling device 11 to vibrate.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support device for an engineering surveying level instrument, comprising a support tube (1), characterized in that: It also includes a detection device, an adjustment device, a deceleration device and a scraping device; Wherein, a support ring (2) is fixedly mounted on the surface of the support tube (1), a sleeve (3) is hingedly mounted on the surface of the support ring (2), a support leg (4) is slidably mounted on the surface of the sleeve (3), a support plate (5) is fixedly mounted on the bottom of the support leg (4), a lifting rod (10) is slidably mounted on the inner wall of the support tube (1), and a leveling device (11) is fixedly mounted on the top of the lifting rod (10); The detection device comprises a circular plate (61), a spring piece (62), a detection plate (63), a rotating rod (64), an auxiliary plate (65), a limiting rod (66) and a hollow frame (67); the circular plate (61) is fixedly mounted on the surface of the sleeve (3); a spring piece (62) is provided between the circular plate (61) and the supporting leg (4); the detection plate (63) is slidably mounted on the surface of the supporting leg (4); the rotating rod (64) is rotatably mounted on the surface of the supporting leg (4); the auxiliary plate (65) is fixedly mounted on the surface of the rotating rod (64); the limiting rod (66) is fixedly mounted on the surface of the rotating rod (64); and the hollow frame (67) is fixedly mounted on the top of the detection plate (63).

2. The engineering surveying level instrument support device according to claim 1, characterized in that: A No. 1 spring is provided between the sleeve (3) and the supporting leg (4), a No. 2 spring is provided between the detection plate (63) and the supporting leg (4), a No. 3 spring is provided between the rotating rod (64) and the supporting leg (4), and the limiting rod (66) is in contact with the top of the inner wall of the hollow frame (67).

3. The engineering surveying level instrument support device according to claim 2, characterized in that: The adjusting device comprises a placement plate (71), a rectangular plate (72), a gear (73), a rack (74) and a limiting frame (75); the placement plate (71) is fixedly mounted on the surface of the support ring (2); the rectangular plate (72) is fixedly mounted on the top of the placement plate (71); the gear (73) is rotatably mounted on the surface of the rectangular plate (72); a lifting groove is provided on the surface of the lifting rod (10); the rack (74) is fixedly mounted on the inner wall of the lifting groove; a rectangular groove is provided on the surface of the rectangular plate (72); and the limiting frame (75) is slidably mounted on the bottom of the inner wall of the rectangular groove.

4. The engineering surveying level instrument support device according to claim 3, characterized in that: A limiting plate (76) is fixedly mounted on the inner wall of the limiting frame (75), a protection rod (77) is slidably mounted on the surface of the rectangular plate (72), a No. 4 spring is arranged between the limiting frame (75) and the rectangular groove, the gear (73) is meshed with the rack (74), and a No. 5 spring is arranged between the protection rod (77) and the rectangular plate (72).

5. The engineering surveying level instrument support device according to claim 4, characterized in that: The deceleration device comprises a connecting rod (81), a connecting plate (82), a fixing rod (83), a curved panel (84) and a limiting plate (85); the connecting rod (81) is fixedly mounted on the bottom of the lifting rod (10); the connecting plate (82) is fixedly mounted on the bottom of the connecting rod (81); the fixing rod (83) is fixedly mounted on the surface of the connecting plate (82); the curved panel (84) is slidably mounted on the surface of the fixing rod (83); the limiting plate (85) is fixedly mounted on the top of the fixing rod (83); and a connecting hole is provided on the surface of the connecting plate (82).

6. The engineering surveying level instrument support device according to claim 5, characterized in that: The surface of the arc panel (84) is provided with an arc hole, and a No. 6 spring is provided between the fixing rod (83) and the arc panel (84).

7. The engineering surveying level instrument support device according to claim 6, characterized in that: The scraping device comprises a scraping rod (91), an arc block (92) and an extrusion rod (93); the scraping rod (91) is slidably mounted on the surface of the leveling device (11); a scraping groove is provided on the surface of the scraping rod (91); the arc block (92) is fixedly mounted on the inner wall of the scraping groove; the extrusion rod (93) is fixedly mounted on the top of the support ring (2); the scraping rod (91) is elastic; and the arc block (92) is elastic.

8. The engineering surveying level instrument support device according to claim 7, characterized in that: A protrusion (94) is fixedly mounted on the surface of the leveling device (11), a vibration sheet (95) is fixedly mounted on the surface of the scraper rod (91), the protrusion (94) is in contact with the vibration sheet (95), and a No. 7 spring is arranged between the scraper rod (91) and the leveling device (11).

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