A surveying instrument anti-dumping positioning device for engineering surveying

Abstract

The invention relates to the field of surveying and mapping instruments, and in particular to an anti-dumping positioning device for surveying and mapping instruments used for engineering surveying and mapping, comprising a surveying and mapping instrument, wherein a counterweight unit is arranged between a plurality of supporting legs of the surveying and mapping instrument; a rectangular opening is arranged on the lower half of each supporting leg, the rectangular opening is arranged along the length direction of the supporting leg, and a plurality of bayonet openings are symmetrically arranged on both sides of each rectangular opening; in the invention, the counterweight unit is designed such that after the plurality of supporting legs are unfolded, a material bag is also unfolded, and some heavy objects can be placed in the material bag, such as some broken stones and bricks around the surveying and mapping, which are all readily available counterweights, or bottled drinking water carried by surveying and mapping personnel, and other equipment and instruments used for surveying and mapping, etc., which can all be placed in the material bag as counterweights, and at this time the counterweight presses the entire surveying and mapping instrument down on the ground, and lowers the center of gravity of the surveying and mapping instrument, thereby improving the stability of the surveying and mapping instrument erected on the ground, so that the instrument can resist the impact of strong winds.

Description

Technical Field

[0001] The invention relates to the field of surveying and mapping instruments, in particular to an anti-dumping positioning device for surveying and mapping instruments used in engineering surveying and mapping. Background Art

[0002] Surveying and mapping instruments are widely used in the fields of building information model construction, ancient building protection, project completion acceptance, large equipment installation and positioning, and complex terrain surveying and mapping. They can provide accurate three-dimensional data support for engineering design, construction and management. When using, the instrument is installed on a retractable tripod and placed between two observation points, and then the value is obtained through observation through the lens.

[0003] However, during the use of existing surveying and mapping instruments in the field, due to the complexity and diversity of the natural construction environment, and being easily affected by the natural wind from the outside, the surveying and mapping instruments are easily knocked over by the impact of the wind. Especially in open sites, where there are no shielding objects around the measuring environment, the impact of the wind can more easily knock the surveying and mapping instruments over. In order to improve the wind resistance and anti-tilting capabilities of the surveying and mapping instruments, a fixed bracket is generally installed at the bottom of the surveying and mapping instruments. However, in actual use, due to the complex terrain and the relatively insufficient horizontal stable placement capability, it is also difficult to stabilize the surveying and mapping instruments.

[0004] Therefore, in view of the above problems, a surveying instrument anti-dumping positioning device for engineering surveying is proposed. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the anti-dumping positioning device for a surveying instrument used for engineering surveying and mapping of the present invention comprises a surveying instrument, and a counterweight unit is provided on the supporting legs of the surveying instrument; A rectangular opening is provided on the lower half of each supporting leg, the rectangular opening is arranged along the length direction of the supporting leg, and a plurality of bayonet openings are symmetrically provided on both sides of each rectangular opening; The counterweight unit includes a material bag, the number of corners of the material bag is the same as the number of supporting legs, and a traction rope is provided at each corner of the material bag. An anti-slip block is fixed to the end of each traction rope, and each anti-slip block can be respectively embedded in two opposite bayonet holes.

[0007] Preferably, a lifting assembly is provided on the mounting plate at the top of the surveying and mapping instrument, and the lifting assembly is used to connect the material bag with the mounting plate at the top of the surveying and mapping instrument; The lifting assembly includes a sleeve, the upper end of which is fixedly connected to the lower surface of the mounting plate, a sliding hole is radially opened on the outer ring of the sleeve, and the sliding hole is opened along the length direction of the sleeve, a lifting rod is slidably connected in the sleeve, and the lower end of the lifting rod extends into the material bag and is fixedly connected to the bottom center position of the material bag; The upper outer ring of the lifting rod is fixedly connected with a sliding block, and the sliding block passes through the sliding hole to the outside of the sleeve.

[0008] Preferably, a plurality of support rods are fixedly connected to the outer ring of the sleeve, and the support rods are arranged along the upper and lower directions of the sleeve; The end of the sliding block is rotatably connected with an arc-shaped fixing rod, and the fixing rod can be pressed on the upper surface of the supporting rod to fix the lifting rod.

[0009] Preferably, a plug hole is provided on the outer ring of the upper end of the sleeve, and the plug hole penetrates into the interior of the sleeve; A fixing hole is provided on the outer ring of the upper end of the lifting rod; An insertion rod is provided on the side wall of the upper end of the support leg opposite to the insertion hole, the upper end of the lifting rod is against the lower surface of the mounting plate, the fixing hole on the lifting rod is opposite to the insertion hole on the sleeve, and the support leg is rotated to be stored, and the end of the insertion rod on the support leg is embedded in the insertion hole and the fixing hole in turn.

[0010] Preferably, the material bag comprises a bag body and an elastic rope; a telescopic opening is provided on the side wall of the bag body, and a plurality of elastic ropes are fixedly connected in the telescopic opening; A plurality of traction ropes are arranged between the bottom of the bag body and the corners thereof, and the traction ropes are arranged inside the surface layer of the bag body.

[0011] Preferably, the bottom of the bag body is provided with an upper and lower layer of plywood, the upper layer of the plywood is arranged at the bottom of the bag body and fixedly connected to the lower end of the lifting rod, and the lower layer of the plywood is arranged at the outer surface of the bottom of the bag body, and the lower layer of the plywood passes through the bag body and is fixedly connected to the upper layer of the plywood; A clamping assembly for fixing supporting legs is fixedly connected to the lower surface of the clamping plate of the lower layer; The clamping assembly includes a fixing seat, which is fixedly connected to the lower clamping plate, and a plurality of slots are radially provided at the lower end of the fixing seat. The plurality of slots are interconnected, and a fixing buckle is provided in the slot. A clamping leg extends outward from the lower end of the fixing buckle, and a buckle is provided at the end of the clamping leg, which is used to clamp the pin at the lower end of the supporting leg.

[0012] Preferably, mounting holes are symmetrically provided at the lower end of each of the supporting legs, a mounting rod is inserted into each mounting hole, the end of the mounting rod is rotatably connected to a disk body, and a plug-in rod is inserted into the disk body.

[0013] Preferably, each of the mounting rods is rotatably connected to a limiting plate, a U-shaped spring plate is provided on one side of the limiting plate, the mounting rod is inserted into the mounting hole, the limiting plate is attached to the supporting leg, the spring plate extends into the bayonet and is attached to the inner wall of the bayonet.

[0014] Preferably, each of the disk bodies is provided with a through hole, and two guide rods are symmetrically arranged in the through hole; A guide groove is provided on the surface of the upper half of each plug-in rod, and the guide groove is arranged along the length direction of the plug-in rod. The plug-in rod is plugged into the through hole, and the end of the guide rod is slidably connected in the guide groove.

[0015] Preferably, a strip-shaped opening for accommodating the plug-in rod is provided on the upper half of each of the supporting legs, a pin is provided on the top of the strip-shaped opening, a spring groove is provided on the bottom of the strip-shaped opening, a spring connecting top block is provided in the spring groove, and a positioning hole is provided on the outer end surface of the top block; a groove for adapting to the pin is provided on the upper end of each of the plug-in rods.

[0016] The present invention is beneficial in that: 1. In the present invention, the counterweight unit is designed, and after the multiple supporting legs are unfolded, the material bag is also unfolded, and some heavy objects can be placed in the material bag, such as some gravel bricks around the surveying and mapping, which are readily available counterweights, or bottled drinking water carried by surveying and mapping personnel, and other equipment and instruments used for surveying and mapping, etc., can all be placed in the material bag as counterweights. At this time, the counterweight presses the entire surveying and mapping instrument down to the ground, and lowers the center of gravity of the surveying and mapping instrument, thereby improving its stability when erected on the ground, so that it can withstand the impact of strong winds.

[0017] 2. In the present invention, the plug rod is designed to assist the plug pin. Before the plug pin is inserted into the ground, the disk is rotated to adjust the angle of the plug rod inserted into the ground, so that the axis of the plug rod and the axis of the pin are in a non-planar state as much as possible. In this way, after the plug rod cooperates with the pin to be inserted into the ground, it is more firmly connected to the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A first-perspective stereoscopic image of the anti-dumping positioning device for a surveying and mapping instrument in the present invention; Figure 2 A second-view stereoscopic diagram of the anti-dumping positioning device for a surveying and mapping instrument in the present invention; Figure 3 It is a front view of the anti-dumping positioning device of the surveying instrument in the present invention; Figure 4 is a three-dimensional diagram of the support leg in the present invention; Figure 5 It is a first perspective stereogram of the counterweight unit in the present invention; Figure 6 A second perspective stereoscopic view of the counterweight unit of the present invention; Figure 7 This is a schematic diagram of the cooperation between the support leg and the clamping assembly in the present invention; Figure 8 is a three-dimensional diagram of the clamping assembly of the present invention; Fig. 9 A three-dimensional diagram of the plug-in rod in the present invention; Fig.10 It is a top view of the splice rod in the present invention.

[0019] In the figure: 1. surveying instrument; 2. supporting leg; 3. rectangular opening; 4. bayonet; 5. material bag; 6. traction rope; 7. anti-slip block; 8. sliding hole; 9. lifting rod; 10. sliding block; 11. supporting rod; 12. fixing rod; 13. plug hole; 14. plug rod; 15. bag body; 16. elastic rope; 17. splint; 18. fixing seat; 19. slot; 20. fixing buckle; 21. clamping leg; 22. buckle; 23. plug pin; 24. mounting hole; 25. mounting rod; 26. disk body; 27. plug rod; 28. limit plate; 29. ​​spring piece; 30. through hole; 31. guide rod; 32. guide groove; 33. strip opening; 34. ejector pin; 35. ejector block; 36. groove; 37. sleeve; 38. mounting disk. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] Reference Figure 1 - Figure 6 , a surveying instrument anti-dumping positioning device for engineering surveying and mapping, comprising a surveying instrument 1, wherein a counterweight unit is provided between a plurality of supporting legs 2 of the surveying instrument 1; A rectangular opening 3 is provided on the lower half of each support leg 2, the rectangular opening 3 is arranged along the length direction of the support leg 2, and a plurality of bayonet openings 4 are symmetrically provided on both sides of each rectangular opening 3; The counterweight unit includes a material bag 5, the number of corners of the material bag 5 is the same as the number of the supporting legs 2, and each corner of the material bag 5 is provided with a traction rope 6, and each end of the traction rope 6 is fixedly connected with an anti-dropping block 7, and each anti-dropping block 7 can be respectively embedded in two opposite bayonet holes 4; In this embodiment, an anti-dumping positioning device is designed to stabilize the surveying and mapping instrument 1. The anti-dumping positioning device is designed in conjunction with the three supporting legs 2 of the surveying and mapping instrument 1. Specifically, after the surveying and mapping instrument 1 is set up on the ground, the three supporting legs 2 are rotated and unfolded, and the pins 23 at the lower ends of the three supporting legs 2 are pressed and plugged into the ground respectively. This is suitable for using the pins 23 in some soft ground conditions. At this time, the surveying and mapping instrument 1 can be stabilized on the ground and can withstand the impact of strong winds. In some cases where the ground is hard, the pin 23 is difficult to insert. In this case, the counterweight unit can be used to stabilize the surveying and mapping instrument 1. When the multiple support legs 2 are unfolded, the material bag 5 is also unfolded. At this time, some heavy objects can be placed in the material bag 5, such as some gravel bricks around the surveying and mapping, which are readily available counterweights, or bottled drinking water carried by surveying and mapping personnel, and other equipment and instruments used for surveying and mapping, etc., can all be placed in the material bag 5 as counterweights. At this time, the counterweight presses the entire surveying and mapping instrument 1 down on the ground, and lowers the center of gravity of the surveying and mapping instrument 1, thereby improving its stability when erected on the ground, so that it can resist the impact of strong winds; The three support legs 2 are provided with bayonet holes 4 at different heights, respectively, in order to be applicable to the situation where the ground is complex, for example, when the three support legs 2 are unfolded at a small angle, the bottom of the material bag 5 is attached to the ground, and the sewage sludge on the ground will adhere to the material bag 5. At this time, the anti-dropping block 7 can be raised to the height of the material bag 5, and the anti-dropping block 7 can be taken out from the bayonet hole 4 at a low position and embedded in the bayonet hole 4 at a higher position, so as to raise the overall height of the material bag 5 and prevent the material bag 5 from directly contacting the dirt on the ground; If the unfolding angle of the three supporting legs 2 is too large, the height of the material bag 5 will be raised. At this time, the overall center of gravity of the surveying and mapping instrument 1 will rise, which is not very friendly to the stability of the surveying and mapping instrument 1. For this reason, the height of the material bag 5 can be adjusted by the anti-slip block 7, and the anti-slip block 7 can be taken out from the high-positioned bayonet 4 and embedded in the lower-positioned bayonet 4 to lower the overall height of the material bag 5, thereby lowering the overall center of gravity of the surveying and mapping instrument 1 and improving the stability of the surveying and mapping instrument 1.

[0022] Reference Figure 1 - Figure 6 A lifting assembly is provided on the mounting plate 38 at the top of the surveying and mapping instrument 1, and the lifting assembly is used to connect the material bag 5 with the mounting plate 38 at the top of the surveying and mapping instrument 1; The lifting assembly includes a sleeve 37, the upper end of which is fixedly connected to the lower surface of the mounting plate 38, a sliding hole 8 is radially opened on the outer ring of the sleeve 37, and the sliding hole 8 is opened along the length direction of the sleeve 37, a lifting rod 9 is slidably connected in the sleeve 37, and the lower end of the lifting rod 9 extends into the material bag 5 and is fixedly connected to the bottom center position of the material bag 5; The upper outer ring of the lifting rod 9 is fixed with a slider 10, and the slider 10 passes through the sliding hole 8 to the outside of the sleeve 37; When putting a weight into the material bag 5, the load-bearing capacity of the material bag 5 needs to be considered to prevent the weight from pressing down and damaging the material bag 5. At the same time, the removal of the weight also needs to be considered. In terms of the load-bearing capacity of the material bag 5, a lifting assembly is provided in this embodiment, which can improve the load-bearing capacity of the material bag 5. The lifting rod 9 cooperates with the sleeve 37 to lift the middle position of the material bag 5, that is, the bottom position of the material bag 5 after the counterweight is loaded, to prevent the counterweight from pressing down and pulling the material bag 5 to be damaged; In terms of taking out the counterweight, when the counterweight is bottled drinking water, or other surveying instruments 1, it is directly taken out of the material bag 5 by hand. If it is some broken stones and the quantity is large, it is cumbersome to take them out one by one. At this time, the slider 10 can be directly pushed up, and the slider 10 drives the lifting rod 9 to move up. At the same time, the lifting rod 9 drives the bottom of the material bag 5 to move up, so as to realize the turning of the material bag 5, that is, the original inner surface of the material bag 5 is turned over to the outer surface of the material bag 5, and the original outer surface of the material bag 5 is turned over to the inner surface of the material bag 5. At this time, the broken stones in the material bag 5 are dumped out at one time, which improves the material taking efficiency and makes the dumping cleaner.

[0023] Reference Figure 1 - Figure 6 A plurality of support rods 11 are fixedly connected to the outer ring of the sleeve 37, and the support rods 11 are arranged along the axis direction of the sleeve 37; The end of the slider 10 is rotatably connected to an arc-shaped fixing rod 12, and the fixing rod 12 can be pressed on the upper surface of the supporting rod 11 and fix the lifting rod 9; By setting the supporting rod 11, the lifting rod 9 can be limited, and the bottom height of the material bag 5 can be adjusted in coordination with the anti-dropping block 7. The fixing rod 12 is rotated and the fixing rod 12 is placed on the supporting rod 11. At this time, the height of the lifting rod 9 can be limited, and the height of the bottom of the material bag 5 is also limited, so that the lifting rod 9 can effectively pull up the material bag 5, thereby ensuring the carrying capacity of the material bag 5 for the counterweight.

[0024] Reference Figure 1 - Figure 6 The outer ring of the upper end of the sleeve 37 is provided with a plug hole 13, and the plug hole 13 penetrates into the interior of the sleeve 37; The upper outer ring of the lifting rod 9 is provided with a fixing hole; An insertion rod 14 is provided on the side wall of the upper end of the support leg 2 opposite to the insertion hole 13, the upper end of the lifting rod 9 is pressed against the lower surface of the mounting plate 38, the fixing hole on the lifting rod 9 is opposite to the insertion hole 13 on the sleeve 37, and the support leg 2 is rotated to be accommodated, and the end of the insertion rod 14 on the support leg 2 is embedded in the insertion hole 13 and the fixing hole in turn; When the surveying and mapping instrument 1 is to be stored, the lifting rod 9 is first pushed up and pressed against the lower surface of the mounting plate 38. At this time, the fixing hole on the lifting rod 9 is opposite to the insertion hole 13 on the sleeve 37. Then the supporting leg 2 is rotated and merged together. The end of the insertion rod 14 on the supporting leg 2 is embedded in the insertion hole 13 and the fixing hole in turn, and the lifting rod 9 is fixed in the sleeve 37. The material bag 5 is stored and stabilized. In order to reduce the wrinkles of the material bag 5 and enable the material bag 5 to be squeezed flatly between the multiple supporting legs 2, the anti-slip block 7 can be adjusted from the higher position of the bayonet 4 to the lower position of the bayonet 4, and the inside of the material bag 5 is facing outward, and it is pulled tight to achieve regular storage of the material bag 5.

[0025] Reference Figure 1 - Figure 6 The material bag 5 comprises a bag body 15 and an elastic rope 16; a telescopic opening is provided on the side wall of the bag body 15, and a plurality of elastic ropes 16 are fixedly connected in the telescopic opening; A plurality of traction ropes 6 are arranged between the bottom and corners of the bag body 15, and the traction ropes 6 are arranged inside the surface layer of the bag body 15; The elastic rope 16 cooperates with the telescopic opening, and utilizes the automatic elastic contraction of the elastic rope 16, so that some larger counterweights can be placed in the material bag 5, and more counterweights can also be carried; and the traction rope 6 in the bag body 15 is arranged between the bottom of the bag body 15 and the corners thereof, which is the area where the pulling force in the bag body 15 is concentrated, thereby improving the tensile strength of the material bag 5, carrying heavier counterweights, and enabling the surveying and mapping instrument 1 to withstand greater wind forces.

[0026] Reference Figure 1 - Figure 6 The bottom of the bag body 15 is provided with an upper and lower layer of plywood 17, the upper layer of the plywood 17 is arranged at the center of the bottom of the bag body 15 and is fixed to the lower end of the lifting rod 9, and the lower layer of the plywood 17 is arranged at the outer surface of the bottom of the bag body 15, and the lower layer of the plywood 17 passes through the bag body 15 and is fixed to the upper layer of the plywood 17; The lower surface of the lower clamping plate 17 is fixed with a clamping assembly for fixing the supporting leg 2; The clamping assembly includes a fixing seat 18, which is fixedly connected to the clamping plate 17 of the lower layer, and a plurality of slots 19 are radially provided at the lower end of the fixing seat 18, the plurality of slots 19 are interconnected, and a fixing buckle 20 is provided in the slot 19, a clamping leg 21 is extended outward from the lower end of the fixing buckle 20, and a buckle 22 is provided at the end of the clamping leg 21, and the buckle 22 is used to clamp the pin 23 at the lower end of the supporting leg 2; When the bag body 15 is loaded with a weight, the weight is likely to scratch or puncture the bottom of the material bag 5, and the outer surface of the bottom of the bag body 15 is likely to come into contact with foreign objects on the ground, causing wear. For this reason, two upper and lower clamping plates 17 are provided at the bottom of the bag body 15 to clamp the easily damaged position of the bag body 15 and protect the bag body 15; At the same time, a clamping assembly for fixing the support legs 2 is provided on the lower clamping plate 17. When the support legs 2 are stored, the pins 23 at the lower ends of the support legs 2 are embedded in the buckles 22. At this time, the multiple support legs 2 can be restrained together. When the surveying and mapping instrument 1 is carried, one of the support legs 2 can be directly grasped to grasp the entire surveying and mapping instrument 1. In this embodiment, the fixing buckle 20 is embedded in the slot 19 provided on the fixing seat 18 by means of snap connection, and the fixing buckle 20 can be removed. Since the fixing buckle 20 is arranged at the bottom of the bag body 15 and is a component that is easily damaged, it is therefore arranged to be detachable. When it is damaged, it can be directly removed and replaced with a new fixing buckle 20.

[0027] Reference Figure 1 - Fig.10 The lower end of each supporting leg 2 is symmetrically provided with a mounting hole 24, and a mounting rod 25 is inserted into each mounting hole 24. The end of the mounting rod 25 is rotatably connected to a disk body 26, and a plug-in rod 27 is inserted into the disk body 26; A plug-in rod 27 is provided on each supporting leg 2, and the plug-in rod 27 assists the plug-in pin 23 to fix the entire surveying and mapping instrument 1 on the ground; before inserting the plug-in pin 23 into the ground, the disk 26 is rotated to adjust the angle at which the plug-in rod 27 is inserted into the ground, and the axis of the plug-in rod 27 and the axis of the plug-in pin 23 are made to be in an eccentric state as much as possible, so that after the plug-in rod 27 cooperates with the plug-in pin 23 to be inserted into the ground, the plug-in to the ground is more firmly.

[0028] Reference Figure 1 - Fig.10 Each of the mounting rods 25 is rotatably connected to a limiting plate 28, a U-shaped spring piece 29 is provided on one side of the limiting plate 28, the mounting rod 25 is inserted into the mounting hole 24, the limiting plate 28 is attached to the supporting leg 2, and the spring piece 29 extends into the bayonet 4 and is attached to the inner wall of the bayonet 4; The mounting rod 25 is rotatably connected to the limit plate 28, and the limit plate 28 is attached to the surface of the support leg 2, and the spring piece 29 is embedded in the bayonet 4. At this time, the anti-slip block 7 can be embedded in the bayonet 4 with the spring piece 29, and the anti-slip block 7 squeezes the spring piece 29 in the bayonet 4 to improve the stability of the spring piece 29, and also improves the stability between the mounting rod 25 and the support leg 2, so as to prevent the surveying and mapping instrument 1 from shaking under the impact of wind, causing the mounting rod 25 to be separated from the support leg 2; The mounting rod 25 is rotatably connected to the limit plate 28, so that both the mounting rod 25 and the disk 26 can be rotated to achieve multi-dimensional angle adjustment of the plug-in rod 27, improve the flexibility of inserting the plug-in rod 27 into the ground, avoid blocking hard objects on the ground, and ensure that the plug-in rod 27 can be smoothly inserted into the ground.

[0029] Reference Fig. 9 - Fig.10Each of the disk bodies 26 has a through hole 30, and two guide rods 31 are symmetrically arranged in the through hole 30; A guide groove 32 is formed on the upper surface of each plug rod 27. The guide groove 32 is arranged along the length direction of the plug rod 27. The plug rod 27 is inserted into the through hole 30. The end of the guide rod 31 is slidably connected in the guide groove 32. The through hole 30 is in clearance with the plug rod 27. When the guide rod 31 slides relatively along the guide groove 32 on the plug rod 27, the plug rod 27 can also deflect a certain angle around the axis of the guide rod 31, further improving the flexibility of the plug rod 27. The guide rod 31 cooperates with the guide groove 32 to constrain the plug-in rod 27 to prevent the plug-in rod 27 from being separated from the disk body 26 when the surveying and mapping instrument 1 is lifted, which may easily cause the plug-in rod 27 to be lost.

[0030] Reference Figure 1 - Fig.10 The upper part of each support leg 2 is provided with a strip-shaped opening 33 for accommodating the plug-in rod 27, the top of the strip opening 33 is provided with an ejector pin 34, the bottom of the strip opening 33 is provided with a spring groove, the spring groove is provided with a spring connecting ejector block 35, and the outer end surface of the ejector block 35 is provided with a positioning hole; the upper end of each plug-in rod 27 is provided with a groove 36 adapted to the ejector pin 34; A strip-shaped opening 33 is provided on each supporting leg 2 for receiving the plug-in rod 27 to prevent the plug-in rod 27 from being lost when the surveying and mapping instrument 1 is not in use; When removing the plug-in rod 27 from the disk body 26, lift the plug-in rod 27 and the guide rod 31 can be separated from the plug-in guide groove 32; after removal, insert the tip of the lower end of the plug-in rod 27 into the positioning hole, and push the plug-in rod 27 down with force, and at the same time, align the upper end groove 36 of the plug-in rod 27 with the ejector pin 34, release the plug-in rod 27, and the plug-in rod 27 is squeezed into the strip opening 33 by the spring, so that the plug-in rod 27 is stored and stabilized.

[0031] Working principle: In this embodiment, an anti-dumping positioning device is designed to stabilize the surveying and mapping instrument 1. The anti-dumping positioning device is designed in conjunction with the support legs 2 of the surveying and mapping instrument 1. Specifically, after the surveying and mapping instrument 1 is set up on the ground, the three support legs 2 are rotated and unfolded respectively, and the pins 23 at the lower ends of the three support legs 2 are pressed and plugged into the ground respectively. This is suitable for using the pins 23 in some soft ground conditions. At this time, the surveying and mapping instrument 1 can be stabilized on the ground and can resist the impact of strong winds; In some cases where the ground is hard, the pin 23 is difficult to insert. In this case, the counterweight unit can be used to stabilize the surveying and mapping instrument 1. When the multiple support legs 2 are unfolded, the material bag 5 is also unfolded. At this time, some heavy objects can be placed in the material bag 5, such as some gravel bricks around the surveying and mapping, which are readily available counterweights, or bottled drinking water carried by surveying and mapping personnel, and other equipment and instruments used for surveying and mapping, etc., can all be placed in the material bag 5 as counterweights. At this time, the counterweight presses the entire surveying and mapping instrument 1 down on the ground, and lowers the center of gravity of the surveying and mapping instrument 1, thereby improving its stability when erected on the ground, so that it can resist the impact of strong winds; The three support legs 2 are provided with bayonet holes 4 at different heights, respectively, in order to be applicable to the situation where the ground is complex, for example, when the three support legs 2 are unfolded at a small angle, the bottom of the material bag 5 is attached to the ground, and the sewage sludge on the ground will adhere to the material bag 5. At this time, the anti-dropping block 7 can be raised to the height of the material bag 5, and the anti-dropping block 7 can be taken out from the bayonet hole 4 at a low position and embedded in the bayonet hole 4 at a higher position, so as to raise the overall height of the material bag 5 and prevent the material bag 5 from directly contacting the dirt on the ground; If the unfolding angle of the three supporting legs 2 is too large, the height of the material bag 5 will be raised. At this time, the overall center of gravity of the surveying and mapping instrument 1 will rise, which is not very friendly to the stability of the surveying and mapping instrument 1. For this reason, the height of the material bag 5 can be adjusted by the anti-slip block 7. The anti-slip block 7 is taken out from the high-positioned bayonet 4 and embedded in the lower-positioned bayonet 4 to lower the overall height of the material bag 5, thereby lowering the overall center of gravity of the surveying and mapping instrument 1 and improving the stability of the surveying and mapping instrument 1.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A surveying instrument anti-tilting positioning device for engineering surveying and mapping, comprising a surveying instrument (1), characterized in that: A counterweight unit is provided between the plurality of supporting legs (2) of the surveying and mapping instrument (1); A rectangular opening (3) is provided on the lower half of each supporting leg (2), the rectangular opening (3) is arranged along the length direction of the supporting leg (2), and a plurality of bayonet openings (4) are symmetrically provided on both sides of each rectangular opening (3); The counterweight unit comprises a material bag (5), the number of corners of the material bag (5) is the same as the number of supporting legs (2), and a traction rope (6) is provided at each corner of the material bag (5), an anti-slip block (7) is fixedly connected to the end of each traction rope (6), and each anti-slip block (7) can be respectively embedded in two opposite bayonet holes (4).

2. The anti-dumping positioning device for a surveying instrument for engineering surveying and mapping according to claim 1 is characterized in that: A lifting assembly is provided on the mounting plate (38) at the top of the surveying and mapping instrument (1), and the lifting assembly is used to connect the material bag (5) to the mounting plate (38) at the top of the surveying and mapping instrument (1); The lifting assembly comprises a sleeve (37), the upper end of the sleeve (37) is fixedly connected to the lower surface of the mounting plate (38), a sliding hole (8) is radially opened on the outer ring of the sleeve (37), and the sliding hole (8) is opened along the length direction of the sleeve (37), a lifting rod (9) is slidably connected inside the sleeve (37), and the lower end of the lifting rod (9) extends into the material bag (5) and is fixedly connected to the center position of the bottom of the material bag (5); The upper outer ring of the lifting rod (9) is fixedly connected with a sliding block (10), and the sliding block (10) passes through the sliding hole (8) to the outside of the sleeve (37).

3. The anti-dumping positioning device for surveying and mapping of engineering surveying and mapping according to claim 2 is characterized in that: A plurality of support rods (11) are fixedly connected to the outer ring of the sleeve (37), and the support rods (11) are arranged along the axial direction of the sleeve (37); The end of the sliding block (10) is rotatably connected to an arc-shaped fixing rod (12), and the fixing rod (12) can be pressed onto the upper surface of the supporting rod (11) to fix the lifting rod (9).

4. The anti-dumping positioning device for surveying and mapping of engineering surveying and mapping according to claim 3 is characterized in that: The outer ring of the upper end of the sleeve (37) is provided with an insertion hole (13), and the insertion hole (13) penetrates into the interior of the sleeve (37); The upper outer ring of the lifting rod (9) is provided with a fixing hole; An insertion rod (14) is provided on the upper side wall of the support leg (2) opposite to the insertion hole (13); the upper end of the lifting rod (9) is pressed against the lower surface of the mounting plate (38); the fixing hole on the lifting rod (9) is opposite to the insertion hole (13) on the sleeve (37); the support leg (2) is rotated to be accommodated, and the end of the insertion rod (14) on the support leg (2) is embedded in the insertion hole (13) and the fixing hole in turn.

5. The anti-dumping positioning device for surveying and mapping of engineering surveying and mapping according to claim 2 is characterized in that: The material bag (5) comprises a bag body (15) and an elastic rope (16); a telescopic opening is provided on the side wall of the bag body (15), and a plurality of elastic ropes (16) are fixedly connected in the telescopic opening; A plurality of traction ropes (6) are arranged between the bottom of the bag body (15) and its corners, and the traction ropes (6) are arranged inside the surface layer of the bag body (15).

6. The anti-dumping positioning device for surveying and mapping of engineering surveying and mapping according to claim 5 is characterized in that: The bottom of the bag body (15) is provided with an upper and lower layer of plywood (17), the upper layer of the plywood (17) is arranged at the bottom of the bag body (15) and is fixedly connected to the lower end of the lifting rod (9), and the lower layer of the plywood (17) is arranged at the outer surface of the bottom of the bag body (15), and the lower layer of the plywood (17) penetrates the bag body (15) and is fixedly connected to the upper layer of the plywood (17); A clamping assembly for fixing the support leg (2) is fixedly connected to the lower surface of the clamping plate (17) at the lower layer; The clamping assembly comprises a fixing seat (18), the fixing seat (18) being fixedly connected to a lower clamping plate (17), and a plurality of slots (19) being radially provided at the lower end of the fixing seat (18), the plurality of slots (19) being interconnected, and a fixing buckle (20) being provided in the slot (19), a clamping leg (21) extending outward from the lower end of the fixing buckle (20), a buckle (22) being provided at the end of the clamping leg (21), and the buckle (22) being used to clamp a pin (23) at the lower end of the supporting leg (2).

7. The anti-dumping positioning device for surveying and mapping of engineering surveying and mapping according to claim 6 is characterized by: A mounting hole (24) is symmetrically formed at the lower end of each supporting leg (2), a mounting rod (25) is inserted into each mounting hole (24), the end of the mounting rod (25) is rotatably connected to a disk body (26), and a plug-in rod (27) is inserted into the disk body (26).

8. The anti-dumping positioning device for surveying and mapping equipment for engineering surveying and mapping according to claim 7 is characterized in that: Each of the mounting rods (25) is rotatably connected to a limiting plate (28), one side of the limiting plate (28) is provided with a U-shaped spring sheet (29), the mounting rod (25) is inserted into the mounting hole (24), the limiting plate (28) is attached to the supporting leg (2), and the spring sheet (29) extends into the bayonet (4) and is attached to the inner wall of the bayonet (4).

9. The anti-dumping positioning device for surveying and mapping of engineering surveying and mapping according to claim 7, characterized in that: Each of the disk bodies (26) is provided with a through hole (30), and two guide rods (31) are symmetrically arranged in the through hole (30); A guide groove (32) is formed on the upper surface of each plug-in rod (27). The guide groove (32) is arranged along the length direction of the plug-in rod (27). The plug-in rod (27) is plugged into the through hole (30), and the end of the guide rod (31) is slidably connected in the guide groove (32).

10. The anti-dumping positioning device for surveying and mapping of engineering surveying and mapping according to claim 8, characterized in that: The upper part of each support leg (2) is provided with a strip-shaped opening (33) for accommodating the plug-in rod (27), the top of the strip-shaped opening (33) is provided with an ejector pin (34), the bottom of the strip-shaped opening (33) is provided with a spring groove, a spring connecting ejector block (35) is provided in the spring groove, and a positioning hole is provided on the outer end surface of the ejector block (35); the upper end of each plug-in rod (27) is provided with a groove (36) adapted to the ejector pin (34).

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