Foundation pit paying-off equipment for measuring parameters of foundation pit

Abstract

The invention relates to the technical field of constructional engineering, in particular to foundation pit paying-off equipment for measuring parameters of a foundation pit. The device comprises a fixing support, a winding assembly is arranged on the fixing support, the winding assembly is used for winding and unwinding a measuring rope, the measuring rope is arranged on the winding assembly, and a balancing weight is connected to the end, away from the winding assembly, of the measuring rope and used for giving pulling force to the measuring rope so that the measuring rope can vertically fall to the bottom of a foundation pit. The extension assembly adopts a rotating motor as a power element and a pushing plate as a pushing element, and the measuring rope and the balancing weight are pushed to move horizontally in a threaded pushing mode so as to adjust the position of the balancing weight. Through the buffer template and the wire slot formed in the buffer template, in the moving process of the measuring rope, friction buffer on the measuring rope can be increased, the moving stability of the measuring rope is guaranteed, the measuring rope is prevented from being loosened too fast, and the measuring accuracy of the contact sensor is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to a foundation pit laying-out device for measuring foundation pit parameters. Background Art

[0002] Foundation pit layout is an important part of construction engineering, which involves the accuracy and safety of foundation construction. It means that when constructing the foundation pit, its parameters need to be laid out and measured. Usually, it is necessary to measure the height of the pit bottom bulge and the elevation of the foundation pit.

[0003] In the prior art, there is a quick wire-releasing device for a foundation pit of a construction project (publication number: CN114604697B), whose structure includes a supporting base plate and a wire-releasing assembly, which is arranged at the upper end of the supporting base plate; a winding drum, which is fixedly connected to the output end of a winding motor, and a first supporting rod for support is fixedly connected to the lower end of the winding motor, and a weight block is fixedly connected to the end of a measuring rope 5; wherein the wire-releasing assembly includes a tightening assembly and a distance adjustment assembly. Although this quick wire-releasing device for a foundation pit of a construction project drives the winding drum to place the measuring rope via the wire-releasing assembly through the rotation of the winding motor, and the distance adjustment assembly can be used to adjust the distance of the measuring rope according to the use requirements, so as to facilitate the use of the user. After use, the winding motor is reversed, and the winding drum reels the measuring rope, and the tightening assembly is used to make the measuring rope in a tightened state when it is reeled, so that it will not be entangled.

[0004] However, in actual use, after the weight block on it contacts the bottom of the foundation pit, it is not easy to judge whether the weight block is in contact with the bottom of the foundation pit due to the depth of the foundation pit. After the weight block contacts the bottom of the foundation pit, the operator is likely to continue to release the line, causing the measuring rope to become loose, affecting the measurement data; if the measuring rope is pulled, although the measuring rope can be taut, it is easy to pull the weight block away from the bottom of the foundation pit, which also affects the accuracy of the measurement data of the foundation pit depth. Summary of the invention

[0005] Aiming at the problems existing in the background technology, a foundation pit laying-out device for measuring foundation pit parameters is proposed.

[0006] The present invention proposes a foundation pit laying equipment for measuring foundation pit parameters, comprising a fixed bracket, a winding assembly is arranged on the fixed bracket, the winding assembly is used for releasing and retracting a measuring rope, a measuring rope is arranged on the winding assembly, one end of the measuring rope away from the winding assembly is connected with a counterweight block, which is used to give tension to the measuring rope so that the measuring rope can fall vertically to the bottom of the foundation pit, an extension assembly is arranged on the fixed bracket, the extension assembly adopts a rotating motor as a power element, and a pushing plate as a pushing element, and pushes the measuring rope and the counterweight block to move horizontally by means of threaded pushing, so as to adjust the position of the counterweight block, so as to achieve the effect of measuring different positions of the foundation pit; a buffer template is arranged on the pushing plate, and the buffer template is composed of Template one and template two are composed of wire grooves on the outer walls of the sides where template one and template two are close to each other, and the wire grooves on template one and template two correspond to each other. After template one and template two are connected, the corresponding two wire grooves form wire holes. The measuring rope moves through the wire holes. The surface contact between the wire groove and the measuring rope can give friction to the measuring rope, thereby slowing down the pay-out speed of the measuring rope. Template one and template two are provided with buffer components for pressurizing and buffering the pay-out of the measuring rope; a contact sensor is provided on the buffer template, and the contact sensor is in contact with the measuring rope, thereby detecting the moving length of the measuring rope, inferring the descending depth of the counterweight block, and obtaining the depth of the foundation pit.

[0007] Preferably, the wire groove is S-shaped. When the measuring rope is subjected to the tension of the counterweight block, the tension will not directly act on the winding assembly due to the action of the buffer template. The S-shaped wire groove can disperse the tension to the buffer template, thereby achieving the effect of dispersing the tension of the measuring rope.

[0008] Preferably, the buffer assembly is composed of a rubber ring, which is coaxially arranged with the wire hole. The measuring rope passes through the rubber ring. The rubber ring provides friction to the measuring rope, further slowing down the pay-out speed of the measuring rope.

[0009] Preferably, a movable frame is slidably installed on template two, an electric push rod is installed on template two, a connecting frame is provided on one side of template two, the connecting frame is connected to the output shaft of the electric push rod, a pressure sensor is provided on the connecting frame, the pressure sensor is connected to the movable frame by hooking, a connecting rod is installed on the connecting frame, the connecting rod passes through the movable frame and is slidably connected to the movable frame, a limiting ring is sleeved on the connecting rod, an adjusting cylinder 1 is installed on the movable frame, a plurality of extrusion strips 1 are provided on the adjusting cylinder 1, and the plurality of extrusion strips 1 are arranged in a ring shape, a threaded ring is rotatably installed on the adjusting cylinder 1, a threaded cylinder is slidably installed on the adjusting cylinder 1, the threaded cylinder passes through the threaded ring and is threadedly connected to the threaded ring, an adjusting motor is installed on the movable frame, and the adjusting motor is connected to the threaded ring through a gear.

[0010] Preferably, the extrusion strip 1 is made of a deformable material, the outer side surface of the extrusion strip 1 is an inclined trapezoid, the inner wall of one end of the threaded barrel facing the extrusion strip 1 is set as a slope, and the slope is adapted to the outer side surface of the extrusion strip 1. During the horizontal movement of the threaded barrel, the inner side surface of the threaded barrel squeezes the outer side surface of the extrusion strip 1, causing the extrusion strip 1 to deform and squeeze the measuring rope.

[0011] Preferably, an annular rack is provided on the outer side of the threaded ring, an internal thread is provided on the inner wall of the threaded ring, a gear 1 is provided on the output shaft of the adjusting motor, the gear is meshed with the annular rack, an external thread is provided on the outer wall of the threaded barrel, and the external thread is threadedly connected with the internal thread, thereby enabling the threaded barrel to move horizontally by rotating the adjusting motor.

[0012] Preferably, an adjusting cylinder 2 is installed on the movable frame, a clamping piece is provided on the template 2, the clamping piece is composed of a plurality of extrusion strips 2, the extrusion strips 2 and the extrusion strips 1 are made of the same material and shape, the inner wall of the adjusting cylinder 2 facing the clamping piece is set as an inclined surface, and by pushing the adjusting cylinder 2, the extrusion clamping piece can extrude the measuring rope through the clamping piece.

[0013] Preferably, in design, the contact sensor is arranged between the first adjusting cylinder and the second adjusting cylinder.

[0014] Preferably, the buffer assembly is composed of a roller, an extrusion plate and a pressurized airbag, and a resistance groove is opened on the outer wall of the side where template one and template two are close to each other, and the roller is rotatably installed in the resistance groove, and the roller is in contact with the measuring rope. During the movement of the measuring rope, the roller can be driven to rotate by friction, and an annular rack is arranged on the roller, and the extrusion plate is slidably installed in the resistance groove, and a rack plate is installed on the extrusion plate, and the rack plate is meshed with the annular rack on the roller, and a fixing bar is installed in the resistance groove, and an extrusion spring is installed on the fixing bar, and the extrusion spring is connected to the extrusion plate, and a back plate is installed in the resistance groove, and the pressurized airbag is installed on the back plate, and the pressurized airbag is connected to the extrusion plate. The pressurized airbag is inflated by the extrusion of the extrusion plate, and the inflated pressurized airbag will increase the resistance to the falling measuring rope, thereby further slowing down the pay-out speed of the measuring rope.

[0015] Preferably, a plurality of rubber strips are installed on the outer wall of the pressurized airbag facing the measuring rope, and the rubber strips are triangular in shape. When the measuring rope is released, one side edge of the rubber strips can further slow down the falling speed of the measuring rope.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: The buffer template and the wire groove arranged thereon can increase the friction buffer of the measuring rope during its movement, thereby ensuring the moving stability of the measuring rope, preventing the measuring rope from being loosened too quickly, and ensuring the measurement accuracy of the contact sensor; By setting an adjustment cylinder and a plurality of extrusion strips thereon, the plurality of extrusion strips clamp and tighten the measuring rope under the action of the adjustment motor, the threaded cylinder and the threaded ring, and then the measuring rope is pulled to move by the electric push rod and the pressure sensor, so that after the counterweight block contacts the bottom of the foundation pit, the measuring rope is pulled to ensure the straightness of the measuring rope, and then the measurement accuracy of the foundation pit depth is ensured. At the same time, by setting the pressure sensor, it is possible to avoid pulling the counterweight block, and further ensure the accuracy of the ruler measurement; Through the push of the electric push rod and the mobile frame, in cooperation with the clamping parts, the tightness of the measuring rope can be increased when it is contracted, thereby ensuring that the measuring rope will not be loose when the winding assembly is contracting the measuring rope, and ensuring that the measuring rope will not be suddenly and quickly loosened due to contraction when it is released next time, thereby ensuring the stability of the release of the measuring rope and the accuracy of the foundation pit measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the first embodiment of the present invention; Figure 2 It is a schematic diagram of the structure of the extension assembly in the present invention; Figure 3 It is a structural schematic diagram of the buffer template in the present invention; Figure 4 It is a structural schematic diagram of template 2 in the present invention; Figure 5 It is a schematic diagram of the structure of the movable frame, the first adjusting cylinder and the second adjusting cylinder in the present invention; Figure 6 It is a cross-sectional structural schematic diagram of the movable frame, the first adjusting cylinder and the second adjusting cylinder in the present invention; Figure 7 is a schematic structural diagram of a second embodiment of the present invention; Figure 8 It is a structural schematic diagram of a buffer assembly in a second embodiment of the present invention; Fig. 9 It is a schematic diagram of the structure of the pressurized airbag in the present invention.

[0018] Figure numerals: 1, fixed bracket; 2, universal wheel; 3, extension assembly; 301, rotating motor; 302, threaded rod; 303, push plate; 304, limit strip; 4, winding assembly; 5, measuring rope; 6, counterweight; 7, buffer template; 8, template one; 9, template two; 10, wire groove; 11, rubber ring; 12, cleaning half ring; 13, electric push rod; 14, connecting frame; 15, mobile frame; 16, pressure sensor; 17, connecting rod; 18, limiting ring; 19, adjusting cylinder 1; 20, adjusting cylinder 2; 21, clamping piece; 22, threaded cylinder; 23, threaded ring; 24, adjusting motor; 25, contact sensor; 26, extrusion strip 1; 27, resistance groove; 28, roller; 29, rack plate; 30, extrusion plate; 31, fixing strip; 32, extrusion spring; 33, pressurized airbag; 34, resisting plate; 35, rubber strip. DETAILED DESCRIPTION

[0019] Embodiment 1 like Figure 1-Figure 6As shown, a foundation pit laying-out device for measuring foundation pit parameters proposed by the present invention comprises: a fixed bracket 1, four rectangular universal wheels 2 are arranged at the bottom of the fixed bracket 1, and the arrangement of the universal wheels 2 can improve the mobility of the entire laying-out device, a winding assembly 4 is arranged on the fixed bracket 1, and the winding assembly 4 is used for retracting and releasing the measuring rope 5. The winding assembly 4 is constructed by the existing technology, and the winding is driven by a motor to rotate, so as to retract and release the measuring rope 5. A measuring rope 5 is arranged on the winding assembly 4, and a counterweight block 6 is connected to the end of the measuring rope 5 away from the winding assembly 4, which is used to give tension to the measuring rope 5 so that the measuring rope 5 can fall vertically to the bottom of the foundation pit, and the counterweight block 6 is composed of a spherical ball and a base. It is in a rolling connection with the base, thereby ensuring that the measuring rope 5 will not be folded or wound around the counterweight 6 due to rollover after the counterweight 6 contacts the bottom of the foundation pit, thereby ensuring the verticality of the measuring rope 5. An extension component 3 is provided on the fixed bracket 1. The extension component 3 adopts a rotating motor 301 as a power element and a pushing plate 303 as a pushing element. The measuring rope 5 and the counterweight 6 are pushed horizontally by threaded pushing, so as to adjust the position of the counterweight 6 and achieve the effect of measuring different positions of the foundation pit. Specifically, the extension component 3 is composed of a rotating motor 301, a threaded rod 302, a pushing plate 303 and a limiting strip 304. The rotating motor 301 is installed on the fixed bracket 1, the threaded rod 302 is rotatably installed on the fixed bracket 1, the threaded rod 302 is connected to the rotating motor 301 through a gear connection, the rotating motor 301 drives the threaded rod 302 to rotate through gear transmission, the pushing plate 303 is slidably set on the fixed bracket 1, a threaded groove is set on the pushing plate 303, one end of the threaded rod 302 extends into the threaded groove and is threadedly connected with the threaded groove, the limiting bar 304 is fixedly installed on the fixed bracket 1, the limiting bar 304 is slidably connected with the pushing plate 303, and is used to limit the movement of the pushing plate 303 to ensure the movement stability of the pushing plate 303; a buffer template 7 is set on the pushing plate 303, and the buffer template 7 is composed of a template 1 8 and a template 2 9. A wire groove 10 is provided on the outer wall of the side where the template 1 8 and the template 2 9 are close to each other, and the wire grooves 10 on the template 1 8 and the template 2 9 correspond to each other. After the template 1 8 and the template 2 9 are connected, the corresponding two wire grooves 10 form a wire hole. The movement of the measuring rope 5 passes through the wire hole. The surface contact of the wire groove 10 with the measuring rope 5 can give the measuring rope 5 friction, slowing down the release speed of the measuring rope 5. The template 1 8 and the template 2 9 are provided with a buffer component for pressurizing and buffering the release of the measuring rope 5. The template 1 8 and the template 2 9 are connected by bolts, and the template 2 9 is provided with a pin hole. A pin rod is installed on the template 1 8, and the pin rod is adapted to the pin hole to ensure the connection accuracy between the template 1 8 and the template 2 9;A contact sensor 25 is provided on the buffer template 7. The contact sensor 25 contacts the measuring rope 5, thereby detecting the moving length of the measuring rope 5, inferring the descending depth of the counterweight 6, and obtaining the depth of the foundation pit. In this embodiment, during the actual use of the entire wire-laying device, a shell can be provided on it to protect the working components of the entire device. The shape of the shell can be designed according to the actual product production. Cleaning grooves are provided on the template 1 8 and the template 2 9. Cleaning semi-rings 12 are provided in both cleaning grooves. The measuring rope 5 enters the wire groove 10 through the two cleaning semi-rings 12. The two cleaning semi-rings 12 are made of rubber material and are used to clean impurities on the surface of the measuring rope 5. The design of the cleaning semi-rings 12 can prevent the measuring rope 5 from being contaminated with impurities and affecting the measurement accuracy of the contact sensor 25. ;

[0020] The wire groove 10 is S-shaped. When the measuring rope 5 is subjected to the tension of the counterweight 6, the tension will not directly act on the winding assembly 4 under the action of the buffer template 7. The S-shaped wire groove 10 can disperse the tension to the buffer template 7, thereby achieving the effect of dispersing the tension of the measuring rope 5. The buffer assembly is composed of a rubber ring 11, and the rubber ring 11 is coaxially arranged with the wire hole. The measuring rope 5 passes through the rubber ring 11. The rubber ring 11 gives friction to the measuring rope 5, further slowing down the unwinding speed of the measuring rope 5.

[0021] A movable frame 15 is slidably mounted on the template 29, an electric push rod 13 is mounted on the template 29, a connecting frame 14 is arranged on one side of the template 29, the connecting frame 14 is connected to the output shaft of the electric push rod 13, a pressure sensor 16 is arranged on the connecting frame 14, and the pressure sensor 16 is connected to the movable frame 15 by hooking, a connecting rod 17 is installed on the connecting frame 14, the connecting rod 17 passes through the movable frame 15 and is slidably connected to the movable frame 15, a limiting ring 18 is sleeved on the connecting rod 17, an adjusting cylinder 19 is installed on the movable frame 15, a plurality of extrusion strips 26 are arranged on the adjusting cylinder 19, and the plurality of extrusion strips 26 are arranged in a ring shape, and the adjusting cylinder 19 is provided with a plurality of extrusion strips 26. A threaded ring 23 is rotatably installed on the cylinder 19, and a threaded cylinder 22 is slidably installed on the adjusting cylinder 19. The threaded cylinder 22 penetrates the threaded ring 23 and is threadedly connected with the threaded ring 23. An adjusting motor 24 is installed on the movable frame 15. The adjusting motor 24 is connected to the threaded ring 23 through a gear. An annular rack is provided on the outer side of the threaded ring 23, and an internal thread is provided on the inner wall of the threaded ring 23. A gear 1 is provided on the output shaft of the adjusting motor 24, and the gear is meshed with the annular rack. An external thread is provided on the outer wall of the threaded cylinder 22, and the external thread is threadedly connected with the internal thread, so that the threaded cylinder 22 can be driven to move horizontally by the rotation of the adjusting motor 24.

[0022] The extrusion strip 26 is made of a deformable material, and the outer side surface of the extrusion strip 26 is an inclined trapezoid. The inner wall of one end of the threaded barrel 22 facing the extrusion strip 26 is set as an inclined surface, and the inclined surface is adapted to the outer side surface of the extrusion strip 26. When the threaded barrel 22 moves horizontally, the inner side surface of the threaded barrel 22 squeezes the outer side surface of the extrusion strip 26, causing the extrusion strip 26 to deform and squeeze the measuring rope 5.

[0023] An adjusting cylinder 20 is installed on the movable frame 15, and a clamping piece 21 is arranged on the template 29. The clamping piece 21 is composed of a plurality of extrusion strips 2. The extrusion strips 2 and the extrusion strips 1 26 are made of the same material and shape. The inner wall of the adjusting cylinder 20 facing the clamping piece 21 is set as an inclined surface. By pushing the adjusting cylinder 20, the clamping piece 21 can be squeezed to extrude the measuring rope 5 through the clamping piece 21. The extrusion strips 1 26 and the side of the extrusion strips 2 facing the measuring rope 5 are both provided with rubber patches for increasing the friction between the measuring rope 5 and the measuring rope 5.

[0024] In terms of design, the contact sensor 25 is disposed between the adjustment cylinder 1 19 and the adjustment cylinder 2 20 .

[0025] In this embodiment, when in use, the wire-laying device is pushed to the edge of the foundation pit, and then the rotating motor 301 is started to drive the rotating threaded rod 302 to rotate, thereby driving the pushing plate 303 to move horizontally. In this process, the winding assembly 4 needs to be used to lay out the measuring rope 5, thereby adjusting the horizontal position of the counterweight block 6, so that the counterweight block 6 stops moving after moving to a suitable position, and then the wire-laying operation can be carried out. Under the pull of the gravity of the counterweight block 6, the measuring rope 5 is driven to descend until the counterweight block 6 contacts the bottom of the foundation pit. In this process, the moving distance of the measuring rope 5 is the depth of the foundation pit; When measuring, the measuring rope 5 moves through the wire groove 10, and the wire groove 10 can buffer the measuring rope 5 to prevent the measuring rope 5 from moving too fast or too slow, causing jitter and affecting the verticality of the measuring rope 5, affecting the subsequent measurement accuracy, and after the counterweight 6 is vertical to the bottom of the foundation pit, the adjusting motor 24 can be started, and through the gear transmission, under the push of the threaded ring 23, the threaded cylinder 22 is driven to move, and the multiple extrusion bars 26 are squeezed to clamp the measuring rope 5, and then the electric push rod 13 can be started to pull the pressure sensor 16 to move through the connecting frame 14, and then through the moving frame 1 5 drives the adjusting cylinder 19 to move, thereby pulling the measuring rope 5 to move. In this process, the pulling force on the measuring rope 5 can be understood through the pressure sensor 16. Since the force required to pull the measuring rope 5 is different from the force of pulling the measuring rope 5 and the counterweight 6 together, it is only necessary to pay attention to the pressure reading on the pressure sensor 16, and the measuring rope 5 can be pulled without pulling the counterweight 6, thereby further ensuring the straightness of the measuring rope 5 and the accuracy of the measurement. After the measuring rope 5 is in the adjusted state, the moving distance of the measuring rope 5 can be obtained through the contact sensor 25 to measure the depth of the foundation pit; When the measuring rope 5 is contracted, the threaded cylinder 22 can be driven to move by adjusting the motor 24, so that the multiple extrusion bars 1 26 release the extrusion on the measuring rope 5, and at the same time, the electric push rod 13 is started to push the adjusting cylinder 20 to move through the moving frame 15, and the clamping member 21 is squeezed, so that the multiple extrusion bars 2 thereon squeeze the measuring rope 5. The squeezing force is small, so that the measuring rope 5 can move through the clamping member 21, so that the measuring rope 5 can be wound on the winding assembly 4. The measuring rope 5 will not become loose after being wound on the winding assembly 4 due to looseness, and then it can be ensured that the measuring rope 5 will not be loosened when it is loosened for the next time, so as to avoid the measuring rope 5 being loosened too quickly and ensure the movement stability of the measuring rope 5.

[0026] Embodiment 2 like Figure 7-Figure 9As shown, a foundation pit laying-out device for measuring foundation pit parameters proposed by the present invention, compared with the first embodiment, the buffer component is composed of a roller 28, an extrusion plate 30 and a pressurized airbag 33, and a resistance groove 27 is provided on the outer wall of the side where the template 1 8 and the template 2 9 are close to each other. The roller 28 is rotatably installed in the resistance groove 27. The roller 28 is in contact with the measuring rope 5. During the movement of the measuring rope 5, the roller 28 can be driven to rotate by friction. An annular rack is provided on the roller 28, and the extrusion plate 30 is slidably installed in the resistance groove 27. A rack plate 29 is installed on the extrusion plate 30, and the rack plate 29 is meshed with the annular rack on the roller 28. There is a fixing bar 31, on which is installed an extrusion spring 32, which is connected to the extrusion plate 30, and in which is installed a resisting plate 34, in which is installed a pressurized airbag 33, which is installed on the resisting plate 34, which is connected to the extrusion plate 30. The pressurized airbag 33 is expanded by the extrusion of the extrusion plate 30, and the expanded pressurized airbag 33 increases the resistance to the falling measuring rope 5, thereby further slowing down the pay-out speed of the measuring rope 5. A plurality of rubber strips 35 are installed on the outer wall of the pressurized airbag 33 on one side facing the measuring rope 5, and the rubber strip 35 is triangular in shape. When the measuring rope 5 is paid out, one side edge of the rubber strip 35 can further slow down the falling speed of the measuring rope 5.

[0027] In this embodiment, when the measuring rope 5 is released, the movement of the measuring rope 5 can drive the roller 28 to rotate, and the setting of the annular rack and the rack plate 29 can push the extrusion plate 30 to move, and then squeeze the pressurized airbag 33, so that the pressurized airbag 33 squeezes the measuring rope 5, so that the falling of the measuring rope 5 is slowed down by the friction with the measuring rope 5, thereby ensuring the movement stability of the measuring rope 5, and when the measuring rope 5 is reeled in, the setting of the extrusion spring 32 can make the annular rack and the rack plate 29 drive the extrusion plate 30 to return to the original state, and then the pressurized airbag 33 is restored to the original state, thereby avoiding contact between the pressurized airbag 33 and the measuring rope 5, thereby reducing the wear of the pressurized airbag 33, and also improving the convenience of retracting the measuring rope 5.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A foundation pit laying-out device for measuring foundation pit parameters, comprising: A fixed support (1) is provided with a winding assembly (4) on the fixed support (1), the winding assembly (4) is used for retracting and releasing a measuring rope (5), a measuring rope (5) is provided on the winding assembly (4), and a counterweight (6) is connected to one end of the measuring rope (5) away from the winding assembly (4) for applying tension to the measuring rope (5) so that the measuring rope (5) can fall vertically to the bottom of the foundation pit, characterized in that: An extension assembly (3) is provided on the fixed bracket (1). The extension assembly (3) uses a rotating motor (301) as a power element and a pushing plate (303) as a pushing element. The measuring rope (5) and the counterweight (6) are pushed horizontally by a threaded pushing method, so as to adjust the position of the counterweight (6) and achieve the effect of measuring different positions of the foundation pit. A buffer template (7) is provided on the push plate (303), and the buffer template (7) is composed of a template 1 (8) and a template 2 (9). A wire groove (10) is provided on the outer wall of the template 1 (8) and the template 2 (9) on a side close to each other, and the wire grooves (10) on the template 1 (8) and the template 2 (9) correspond to each other. After the template 1 (8) and the template 2 (9) are connected, the two corresponding wire grooves (10) form a wire hole. The movement of the measuring rope (5) passes through the wire hole. The contact between the wire groove (10) and the surface of the measuring rope (5) can give the measuring rope (5) frictional force, thereby slowing down the release speed of the measuring rope (5). The template 1 (8) and the template 2 (9) are provided with a buffer component for applying pressure to the release of the measuring rope (5); A contact sensor (25) is provided on the buffer template (7), and the contact sensor (25) is in contact with the measuring rope (5), thereby being able to detect the moving length of the measuring rope (5), infer the descending depth of the counterweight block (6), and obtain the depth of the foundation pit.

2. The foundation pit laying-out equipment for measuring foundation pit parameters according to claim 1, characterized in that: The wire groove (10) is S-shaped. When the measuring rope (5) is subjected to a pulling force from the counterweight (6), the pulling force will not directly act on the winding assembly (4) under the action of the buffer template (7). The pulling force can be dispersed to the buffer template (7) through the S-shaped wire groove (10), thereby achieving the effect of dispersing the pulling force of the measuring rope (5).

3. The foundation pit laying-out equipment for measuring foundation pit parameters according to claim 1, characterized in that: The buffer assembly is composed of a rubber ring (11), which is coaxially arranged with the wire hole. The measuring rope (5) passes through the rubber ring (11). The rubber ring (11) provides friction to the measuring rope (5), thereby further slowing down the pay-off speed of the measuring rope (5).

4. The foundation pit laying-out equipment for measuring foundation pit parameters according to claim 1, characterized in that: A movable frame (15) is slidably mounted on the second template (9), an electric push rod (13) is mounted on the second template (9), a connecting frame (14) is arranged on one side of the second template (9), the connecting frame (14) is connected to the output shaft of the electric push rod (13), a pressure sensor (16) is arranged on the connecting frame (14), the pressure sensor (16) is connected to the movable frame (15) by hooking, a connecting rod (17) is mounted on the connecting frame (14), the connecting rod (17) passes through the movable frame (15) and is slidably connected to the movable frame (15), and the connecting rod (17) is A limiting ring (18) is sleeved, an adjusting cylinder (19) is mounted on the movable frame (15), a plurality of extrusion strips (26) are arranged on the adjusting cylinder (19), and the plurality of extrusion strips (26) are arranged in a ring shape, a threaded ring (23) is rotatably mounted on the adjusting cylinder (19), a threaded cylinder (22) is slidably mounted on the adjusting cylinder (19), the threaded cylinder (22) penetrates the threaded ring (23) and is threadedly connected to the threaded ring (23), an adjusting motor (24) is mounted on the movable frame (15), and the adjusting motor (24) is connected to the threaded ring (23) through a gear.

5. The foundation pit laying-out equipment for measuring foundation pit parameters according to claim 4, characterized in that: The extrusion strip (26) is made of a deformable material, and the outer side surface of the extrusion strip (26) is in an inclined trapezoidal shape. The inner wall of one end of the threaded barrel (22) facing the extrusion strip (26) is arranged as an inclined surface, and the inclined surface is adapted to the outer side surface of the extrusion strip (26). When the threaded barrel (22) moves horizontally, the inner side surface of the threaded barrel (22) squeezes the outer side surface of the extrusion strip (26), causing the extrusion strip (26) to deform and squeeze the measuring rope (5).

6. The foundation pit laying-out equipment for measuring foundation pit parameters according to claim 4, characterized in that: An annular rack is arranged on the outer side of the threaded ring (23), an internal thread is arranged on the inner wall of the threaded ring (23), a gear 1 is arranged on the output shaft of the adjusting motor (24), the gear is meshed with the annular rack, an external thread is arranged on the outer wall of the threaded barrel (22), the external thread is threadedly connected with the internal thread, thereby enabling the threaded barrel (22) to move horizontally by the rotation of the adjusting motor (24).

7. The foundation pit laying-out equipment for measuring foundation pit parameters according to claim 4, characterized in that: An adjusting cylinder (20) is mounted on the movable frame (15), and a clamping member (21) is arranged on the template (9). The clamping member (21) is composed of a plurality of extrusion strips (2). The extrusion strips (2) and the extrusion strips (26) are made of the same material and shape. The inner wall of the adjusting cylinder (20) on one side facing the clamping member (21) is arranged as an inclined surface. By pushing the adjusting cylinder (20), the clamping member (21) can be pressed to extrude the measuring rope (5) through the clamping member (21).

8. The foundation pit laying-out equipment for measuring foundation pit parameters according to claim 7, characterized in that: In terms of design, the contact sensor (25) is arranged between the first adjustment cylinder (19) and the second adjustment cylinder (20).

9. The foundation pit setting-out equipment for measuring foundation pit parameters according to claim 1, characterized in that: The buffer assembly is composed of a roller (28), an extrusion plate (30) and a pressurized air bag (33). A resistance groove (27) is provided on the outer wall of the template 1 (8) and the template 2 (9) on the side close to each other. The roller (28) is rotatably installed in the resistance groove (27). The roller (28) is in contact with the measuring rope (5). During the movement of the measuring rope (5), the roller (28) can be driven to rotate by friction. The roller (28) is provided with an annular rack. The extrusion plate (30) is slidably installed in the resistance groove. (27), a rack plate (29) is installed on the extrusion plate (30), the rack plate (29) is meshed with the annular rack on the roller (28), a fixing strip (31) is installed in the resistance groove (27), an extrusion spring (32) is installed on the fixing strip (31), the extrusion spring (32) is connected to the extrusion plate (30), a resisting plate (34) is installed in the resistance groove (27), a pressurizing airbag (33) is installed on the resisting plate (34), and the pressurizing airbag (33) is connected to the extrusion plate (30); The pressurized airbag (33) is inflated by squeezing the squeezing plate (30), and the inflated pressurized airbag (33) increases resistance to the falling measuring rope (5), further slowing down the pay-off speed of the measuring rope (5).

10. The foundation pit laying-out equipment for measuring foundation pit parameters according to claim 9, characterized in that: A plurality of rubber strips (35) are mounted on an outer wall of the pressurized airbag (33) on one side facing the measuring rope (5). The rubber strips (35) are triangular in shape. When the measuring rope (5) is released, one side edge of the rubber strips (35) can further slow down the falling speed of the measuring rope (5).

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