阅读说明：本技术 一种建筑地基垂直度检测装置 (Building foundation verticality detection device ) 是由 王文才 孙广灿 王继东 赵龙 田远宇 张志刚 杜占宾 何方方 何磊 于 2021-08-04 设计创作，主要内容包括：本发明涉本发明涉及垂直度检测领域,具体涉及一种建筑地基垂直度检测装置。固定臂竖配置成具有磁性。摆动臂以在摆动臂和固定臂接触时两者之间的距离从下到上逐渐变大。升降齿轮重量大的一半向上转动时对升降弹簧的支撑力向上。传动框可上下滑动地安装在摆动臂上,传动框上插装有和固定臂上磁性相同的磁条,以在传动框相对于摆动臂向左移动时通过传动机构使升降齿轮转动上升,传动框和升降齿轮之间设有复位弹簧；传动框上设置有制动杆,制动杆和磁条固定连接,配置成防止升降齿轮下落；解锁机构配置成当传动框上升至摆动臂的最上端时和固定臂接触,并使磁条和制动杆脱离传动框,进而使摆动臂更易摆动到竖直位置,以提高测量精度。(The invention relates to the field of perpendicularity detection, in particular to a building foundation perpendicularity detection device. The stationary arm is configured to be magnetic. The swing arm is gradually increased from bottom to top by a distance between the swing arm and the fixed arm when the two are in contact. When the half of the weight of the lifting gear is larger, the supporting force for the lifting spring is upward. The transmission frame is arranged on the swing arm in a vertically sliding manner, a magnetic strip with the same magnetism as that on the fixed arm is inserted on the transmission frame, so that the lifting gear rotates and rises through the transmission mechanism when the transmission frame moves leftwards relative to the swing arm, and a return spring is arranged between the transmission frame and the lifting gear; the brake rod is arranged on the transmission frame, is fixedly connected with the magnetic strip and is configured to prevent the lifting gear from falling; the unlocking mechanism is configured to be in contact with the fixed arm when the transmission frame rises to the uppermost end of the swing arm, and the magnetic strip and the brake rod are separated from the transmission frame, so that the swing arm can swing to a vertical position more easily, and the measurement precision is improved.)

1. The utility model provides a building foundation straightness detection device that hangs down which characterized in that: the method comprises the following steps:

the fixing arm is vertically arranged, the upper end of the fixing arm extends obliquely leftwards, and the fixing arm is configured to have magnetism;

the upper end of the swinging arm and the upper end of the fixed arm are hinged with each other, and the hinged shaft horizontally extends along the left and right directions of the swinging arm so that the distance between the swinging arm and the fixed arm is gradually increased from bottom to top when the swinging arm and the fixed arm are contacted; the swing arm is provided with a spring groove, the spring groove is vertically arranged in a waist groove manner, and the side wall of the spring groove is provided with a rack;

the lifting mechanism comprises a lifting spring and a lifting gear; the lifting spring is arranged in the spring groove; the lifting gear is meshed with the rack and is positioned at the lower end of the lifting spring, and the lifting gear is configured to enable the lifting spring to contract when rotating upwards; the lifting gear has half weight larger than the other half weight, so that the supporting force for the lifting spring is upward when the lifting gear rotates upward by half of the larger weight;

the transmission frame is arranged on the swinging arm in a vertically sliding manner, and a certain moving space is formed along the front and back directions of the swinging wall; the transmission frame is inserted with a magnetic strip with the same magnetism as the fixed arm, the transmission frame is connected with the lifting gear through the transmission mechanism so as to enable the lifting gear to rotate and rise through the transmission mechanism when the transmission frame moves leftwards relative to the swing arm, and a return spring is arranged between the transmission frame and the lifting gear; the brake rod is arranged on the transmission frame, is fixedly connected with the magnetic strip and is configured to prevent the lifting gear from falling;

and the unlocking mechanism is configured to be contacted with the fixed arm when the transmission frame rises to the uppermost end of the swinging arm, and the magnetic strip and the brake rod are separated from the transmission frame.

2. The building foundation verticality detection device according to claim 1, characterized in that:

the lifting mechanism also comprises a lifting shaft and a balancing weight;

the lifting shaft is cylindrical, is fixedly arranged on one side of the lifting gear close to the fixed arm and extends towards one side of the fixed arm, and the transmission mechanism is arranged in the lifting shaft; the balancing weight is blocky and is fixedly installed on the side wall of the lifting shaft.

3. The building foundation verticality detection device according to claim 2, characterized in that:

the transmission mechanism comprises an installation column, a transmission spring and a transmission column;

a spiral groove is arranged on the inner wall of the lifting shaft, the spiral groove extends spirally to the lifting gear along the length direction of the lifting shaft, and a return spring is arranged in the lifting shaft; the peripheral wall of the mounting column is provided with a mounting hole extending along the radial direction of the mounting column, the mounting column is inserted in the lifting shaft, and the reset spring is positioned between the lifting gear and the mounting column; one end of the transmission column is inserted into the mounting hole, and the other end of the transmission column is slidably arranged in the spiral groove, so that when the mounting column slides towards the lifting shaft, the transmission column slides in the spiral groove and the lifting gear rotates.

4. The building foundation verticality detection device according to claim 2, characterized in that:

the swing arm is provided with a limiting groove which is positioned at one side of the spring groove close to the fixed arm, and the balancing weight is positioned in a gap between the limiting groove and the spring groove; the side wall of the limit groove is provided with a ratchet bar, and the brake rod is arranged on the ratchet bar.

5. The building foundation verticality detection device according to claim 4, wherein:

one side of the transmission frame, which is close to the fixed arm, is provided with a plurality of magnetic stripe grooves, the plurality of magnetic stripe grooves are horizontally arranged at intervals, and each magnetic stripe is slidably inserted into one magnetic stripe groove.

6. The building foundation verticality detection device according to claim 5, wherein:

the unlocking mechanism comprises a pushing comb and a transfer arm;

the transmission frame is provided with a transmission groove which is parallel to the magnetic stripe groove; the pushing comb is arranged at the upper end of the transfer groove and is configured to move towards the fixed arm and push the magnetic stripe out of the magnetic stripe groove when being positioned at the same position as the pushing comb; the transmission arm is rod-shaped, the middle part is rotatably installed in the transmission groove, two ends of the transmission arm are bent towards one side of the fixed arm and form a certain angle, the upper end of the transmission arm is connected with the pushing comb, the lower end of the transmission arm horizontally extends out of the swinging arm, and when the pushing comb is configured to be in an initial state and is located in the transmission groove, the trigger rod extends out of the swinging arm.

7. The building foundation verticality detection device according to claim 6, wherein:

the pushing comb comprises a mounting rod and a plurality of push rods; the mounting rod is in a long rod shape; the push rods extend towards the fixing arm direction, each push rod can be inserted into one magnetic strip groove, and the push rods are fixed on the mounting rod and are uniformly distributed at intervals along the length direction of the mounting rod.

8. The building foundation verticality detection device according to claim 1, characterized in that:

the fixed arm comprises a magnetic arm; the magnetic arm is of a magnetic rod-shaped structure and comprises an inclined section and a fixed section; the fixed section is vertically arranged, and the distance from the bottom to the fixed surface is gradually reduced; the lower end of the inclined section is fixedly connected with the upper end of the fixed section, and inclines leftwards relative to the fixed section to form a certain angle with the fixed section; the articulated shaft is located the upper end of slope section.

9. The building foundation verticality detection device according to claim 8, wherein:

the fixed arm also comprises a fixed plate; the fixed plate is provided with a plurality of fixed holes, and the fixed arm is arranged on the fixed plate.

10. The building foundation verticality detection device according to claim 1, characterized in that: also includes a reference pointer;

the reference pointer is rotatably installed on the hinge shaft, points in the direction of the bottom surface, and is configured to reference the angle at which the swing arm is pulled up.

Technical Field

The invention relates to the field of perpendicularity detection, in particular to a building foundation perpendicularity detection device.

Background

The precision of the building foundation directly determines whether the final building is qualified or not, so the detection of the foundation is particularly important, wherein the verticality is an important parameter, and the precision of a device for mechanically detecting the verticality is low, so a high-precision detection device is needed.

The traditional verticality detection tool generally adopts the mode that the swing rod is hung at the upper end of the tool, whether a plane is vertical or not is judged by judging the position relation between the swing rod and a datum line, and an included angle between the datum line and the swing rod is measured to obtain a vertical angle value.

Disclosure of Invention

The invention provides a building foundation verticality detection device, which aims to solve the problem that the existing verticality detection device is low in measurement precision.

The invention relates to a building foundation verticality detection device, which adopts the following technical scheme:

a building foundation verticality detection device comprises a fixed arm, a swing arm, a lifting mechanism, a transmission frame and an unlocking mechanism; the fixing arm is vertically arranged, the upper end of the fixing arm extends obliquely leftwards and is configured to have magnetism; the upper end of the swing arm and the upper end of the fixed arm are hinged with each other, and the hinged shaft horizontally extends along the left and right directions of the swing arm so that the distance between the swing arm and the fixed arm is gradually increased from bottom to top when the swing arm and the fixed arm are contacted; the swing arm is provided with a spring groove, the spring groove is vertically arranged in a waist groove manner, and the side wall of the spring groove is provided with a rack; the lifting mechanism comprises a lifting spring and a lifting gear; the lifting spring is arranged in the spring groove; the lifting gear is meshed with the rack and is positioned at the lower end of the lifting spring, and the lifting gear is configured to enable the lifting spring to contract when rotating upwards; the lifting gear has half weight larger than the other half weight, so that the supporting force for the lifting spring is upward when the lifting gear rotates upward by half of the larger weight; the transmission frame is arranged on the swing arm in a vertically sliding manner, and a certain moving space is formed along the front and back directions of the swing wall; the transmission frame is inserted with a magnetic strip with the same magnetism as the fixed arm, the transmission frame is connected with the lifting gear through the transmission mechanism so as to enable the lifting gear to rotate and rise through the transmission mechanism when the transmission frame moves leftwards relative to the swing arm, and a return spring is arranged between the transmission frame and the lifting gear; the brake rod is arranged on the transmission frame, is fixedly connected with the magnetic strip and is configured to prevent the lifting gear from falling; the unlocking mechanism is configured to contact the fixed arm when the transmission frame rises to the uppermost end of the swing arm and to disengage the magnetic strip and the brake lever from the transmission frame.

Furthermore, the lifting mechanism also comprises a lifting shaft and a balancing weight; the lifting shaft is cylindrical, is fixedly arranged on one side of the lifting gear close to the fixed arm and extends towards one side of the fixed arm, and the transmission mechanism is arranged in the lifting shaft; the balancing weight is blocky and is fixedly installed on the side wall of the lifting shaft.

Further, the transmission mechanism comprises a mounting column, a transmission spring and a transmission column; a spiral groove is arranged on the inner wall of the lifting shaft, the spiral groove extends spirally to the lifting gear along the length direction of the lifting shaft, and a return spring is arranged in the lifting shaft; the peripheral wall of the mounting column is provided with a mounting hole extending along the radial direction of the mounting column, the mounting column is inserted in the lifting shaft, and the reset spring is positioned between the lifting gear and the mounting column; one end of the transmission column is inserted into the mounting hole, and the other end of the transmission column is slidably arranged in the spiral groove, so that when the mounting column slides towards the lifting shaft, the transmission column slides in the spiral groove and the lifting gear rotates.

Furthermore, a limit groove is arranged on the swing arm and is positioned on one side of the spring groove close to the fixed arm, and the balancing weight is positioned in a gap between the limit groove and the spring groove; the side wall of the limit groove is provided with a ratchet bar, and the brake rod is arranged on the ratchet bar.

Furthermore, one side of the transmission frame, which is close to the fixed arm, is provided with a plurality of magnetic stripe grooves, the plurality of magnetic stripe grooves are horizontally arranged at intervals, and each magnetic stripe is slidably inserted into one magnetic stripe groove.

Further, the unlocking mechanism comprises a pushing comb and a transmission arm; the transmission frame is provided with a transmission groove which is parallel to the magnetic stripe groove; the pushing comb is arranged at the upper end of the transfer groove and is configured to move towards the fixed arm and push the magnetic stripe out of the magnetic stripe groove when being positioned at the same position as the pushing comb; the transmission arm is rod-shaped, the middle part is rotatably installed in the transmission groove, two ends of the transmission arm are bent towards one side of the fixed arm and form a certain angle, the upper end of the transmission arm is connected with the pushing comb, the lower end of the transmission arm horizontally extends out of the swinging arm, and when the pushing comb is configured to be in an initial state and is located in the transmission groove, the trigger rod extends out of the swinging arm.

Further, the pushing comb comprises a mounting rod and a plurality of push rods; the mounting rod is in a long rod shape; the push rods extend towards the fixing arm direction, each push rod can be inserted into one magnetic strip groove, and the push rods are fixed on the mounting rod and are uniformly distributed at intervals along the length direction of the mounting rod.

Further, the fixed arm includes a magnetic arm; the magnetic arm is of a magnetic rod-shaped structure and comprises an inclined section and a fixed section; the fixed section is vertically arranged, and the distance from the bottom to the fixed surface is gradually reduced; the lower end of the inclined section is fixedly connected with the upper end of the fixed section, and inclines leftwards relative to the fixed section to form a certain angle with the fixed section; the articulated shaft is located the upper end of slope section.

Furthermore, the fixed arm also comprises a fixed plate; the fixed plate is provided with a plurality of fixed holes, and the fixed arm is arranged on the fixed plate.

Further, a reference pointer is also included; the reference pointer is rotatably installed on the hinge shaft, points in the direction of the bottom surface, and is configured to reference the angle at which the swing arm is pulled up.

The invention has the beneficial effects that: according to the building foundation verticality detection device, due to the arrangement of the lifting mechanism, after the lifting spring is released along with the swinging arm, due to uneven weight of the lifting gear, the lifting spring enables the lifting gear to eccentrically rotate in the releasing process, the eccentric rotation enables the rotation resistance of the swinging arm to be gradually reduced, so that the friction force between the swinging arm and the hinge shaft is reduced, the swinging arm can be easily swung to a vertical position, and the measurement precision is improved.

Furthermore, the swing arm is lifted to swing freely, so that the lifting spring moves upwards to store force on the lifting spring, an additional power source is not needed, the use cost is lower, and the operation is more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a building foundation verticality detection device according to the present invention;

FIG. 2 is a schematic structural diagram of a swing arm of an embodiment of the device for detecting the verticality of the foundation of a building according to the present invention;

FIG. 3 is a left side view of the structure of an embodiment of the device for detecting the perpendicularity of the building foundation of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 7 is a schematic structural diagram of a transmission frame of an embodiment of the device for detecting the perpendicularity of the building foundation according to the invention;

FIG. 8 is a schematic structural view of a lifting gear of an embodiment of the device for detecting the perpendicularity of the building foundation according to the invention;

FIG. 9 is a schematic structural diagram of a fixing arm of an embodiment of the device for detecting perpendicularity of a building foundation according to the present invention;

FIG. 10 is a schematic structural diagram of an initial state of an embodiment of the device for detecting the perpendicularity of the building foundation according to the invention;

FIG. 11 is a schematic structural diagram of a final state of an embodiment of the device for detecting the perpendicularity of the building foundation according to the invention;

in the figure: 1. a fixed arm; 2. a swing arm; 3. a transmission frame; 4. a lifting gear; 5. a fixing plate; 6. a magnetic arm; 7. a rack; 8. a ratchet bar; 9. a reference pointer; 10. a transfer slot; 11. a limiting surface; 12. a lift spring; 13. a brake lever; 14. a balancing weight; 15. a helical groove; 16. a return spring; 17. a magnetic strip; 18. a drive post; 19. pushing and extruding the comb; 20. mounting a column; 21. a wedge-shaped opening; 22. and a driving arm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention relates to a building foundation verticality detection device, as shown in fig. 1 to 11, which comprises a fixed arm 1, a swing arm 2, a lifting mechanism, a transmission frame 3 and an unlocking mechanism, and further comprises a reference pointer 9; the fixed arm 1 is vertically arranged, has an upper end extending obliquely to the left side, and is configured to have magnetism. The fixed arm 1 comprises a magnetic arm 6 and a fixed plate 5; the magnetic arm 6 is a magnetic rod-shaped structure and comprises an inclined section and a fixed section. The fixed section is vertically arranged, and the distance from the bottom to the fixed surface is gradually reduced. The lower end of the inclined section is fixedly connected with the upper end of the fixed section, the inclined section inclines leftwards relative to the fixed section and forms a certain angle with the fixed section, and the joint between the inclined section and the fixed section forms a wedge-shaped opening 21. The articulated shaft is located the upper end of slope section. The fixing plate 5 is provided with a plurality of fixing holes, and the fixing arm 1 is arranged on the fixing plate 5. The upper end of the swing arm 2 and the upper end of the fixed arm 1 are hinged to each other, and the hinged shaft horizontally extends along the left and right directions of the swing arm 2 to enable the swing arm 2 and the hinged shaft to swing left and right by taking the axis as the axis, so that the distance between the swing arm 2 and the fixed arm 1 is gradually increased from bottom to top when the swing arm 2 and the fixed arm are in contact. Be equipped with the spring groove on the swing arm 2, the spring groove is the vertical setting of waist groove, and is equipped with rack 7 on the lateral wall, and rack 7 is located the left side wall in spring groove. The lifting mechanism comprises a lifting spring 12 and a lifting gear 4; the lifting spring 12 is arranged in the spring groove; the lifting gear 4 is engaged with the rack 7 and is located at a lower end of the lifting spring 12, the lifting gear 4 moves upward along the rack 7 when the lifting gear 4 rotates counterclockwise, and the lifting gear 4 moves downward along the rack 7 when the lifting gear 4 rotates clockwise, and is configured to contract the lifting spring 12 when rotating upward. Half weight of the lifting gear 4 is larger than the other half weight, so that when the lifting gear 4 rotates upwards by half of the larger weight, the supporting force of the lifting spring 12 is upward, so that the lifting spring 12 has an upward supporting force on the swing arm 2, the friction force between the swing arm 2 and the hinge shaft is reduced, and the swing arm 2 can reach a vertical position more easily; the left side and the right side of the swing arm 2 are provided with limiting surfaces 11, the transmission frame 3 is arranged on the swing arm 2 in a manner of sliding up and down through the limiting surfaces 11, and a certain moving space is formed along the front and back directions of the swing wall; the magnetic strip 17 with the same magnetism as that of the fixed arm 1 is inserted on the transmission frame 3, so that when the swing arm 2 swings rightwards, the fixed arm 1 gives a leftward thrust to the swing arm 2 and does not contact with the fixed arm 1, a contact triggering structure is avoided, and damage caused by mutual collision between the fixed arm 1 and the swing arm 2 is also avoided, the transmission frame 3 is connected with the lifting gear 4 through a transmission mechanism, so that the lifting gear 4 rotates and rises through the transmission mechanism when the transmission frame 3 moves leftwards relative to the swing arm 2, and a return spring 16 is arranged between the transmission frame 3 and the lifting gear 4; a brake rod 13 is arranged on the transmission frame 3, the brake rod 13 is fixedly connected with a magnetic strip 17 and is configured to prevent the lifting gear 4 from falling; the unlocking mechanism is configured to contact the fixed arm 1 when the transmission frame 3 rises to the uppermost end of the swing arm 2, and to separate the magnetic strip 17 and the brake lever 13 from the transmission frame 3 and to be attracted to the magnetic wall, so that the lifting gear 4 loses the brake of the lifting spring 12 to push the lifting gear 4 to rotate clockwise and descend. The reference pointer 9 is rotatably mounted on the hinge shaft, and the reference pointer 9 points in the direction of the bottom surface, and is disposed to refer to the angle at which the swing arm 2 is pulled up. .

In the present embodiment, as shown in fig. 4, 5 and 8, the lifting mechanism further includes a lifting shaft and a weight 14; the lifting shaft is cylindrical, is fixedly arranged on one side of the lifting gear 4 close to the fixed arm 1 and extends towards one side of the fixed arm 1, and the transmission mechanism is arranged in the lifting shaft; the balancing weight 14 is blocky, and balancing weight 14 is fan-shaped, and most advanced fixed mounting is on the lateral wall of lift axle, and balancing weight 14 rotates along with lifting gear 4, and swing arm 2 diminishes the swing resistance and diminishes to the normal pressure grow swing resistance of articulated shaft when balancing weight 14 upwards rotates, and swing arm 2 diminishes the normal pressure grow swing resistance grow of articulated shaft when balancing weight 14 rotates downwards.

In the present embodiment, as shown in fig. 4 to 7, the transmission mechanism includes a mounting post 20, a transmission spring, and a transmission post 18; a spiral groove 15 is formed in the inner wall of the lifting shaft, the spiral groove 15 extends towards the lifting gear 4 in a spiral mode along the length direction of the lifting shaft, the spiral groove 15 and the transmission column 18 are matched to enable the lifting gear 4 to rotate anticlockwise and move upwards when sliding inwards, and a return spring 16 is installed in the lifting shaft; the peripheral wall of the mounting column 20 is provided with a mounting hole extending along the radial direction of the mounting column 20, one side of the mounting hole is smooth and has small damping, the other side of the mounting hole has large rough damping, the mounting column 20 is inserted into the lifting shaft, and the return spring 16 is positioned between the lifting gear 4 and the mounting column 20 and is fixedly connected with the lifting gear; one end of the transmission column 18 is inserted into the mounting hole, and the other end of the transmission column is slidably arranged in the spiral groove 15, so that when the mounting column 20 slides towards the lifting shaft, the transmission column 18 clings to the rough side and cannot contract inwards, the transmission column 18 slides in the spiral groove 15 and enables the lifting gear 4 to rotate, and when the mounting column 20 slides outwards towards the lifting shaft, the transmission column 18 clings to the smooth side and contracts towards the inside of the mounting hole. The drive post 18 may be provided in a plurality of holes corresponding to the plurality of mounting holes, and is adapted to slide in at least one of the spiral grooves 15 when the mounting post 20 is moved.

In this embodiment, as shown in fig. 2, the swing arm 2 is provided with a limiting groove, which is located on one side of the spring groove close to the fixed arm 1 and has the same length as the spring groove, and the counterweight 14 is located in a gap between the limiting groove and the spring groove; the side wall of the limiting groove is provided with a ratchet bar 8, the brake rod 13 is installed on the ratchet bar 8, the brake rod 13 can be ground to enable the ratchet bar 8 to slide upwards and be matched with each tooth groove to prevent the brake rod 13 from sliding downwards, and the left side wall and the right side wall of the limiting groove are both provided with the ratchet bar 8.

In the present embodiment, as shown in fig. 6, the unlocking mechanism includes a pushing comb 19 and a transmission arm; one side that transmission frame 3 is close to fixed arm 1 is equipped with a plurality of magnetic stripe 17 grooves, and a plurality of magnetic stripe 17 grooves level interval sets up, and every magnetic stripe 17 cartridge all can slide is in a magnetic stripe 17 groove, and brake lever 13 is installed in the magnetic stripe 17 and is close to one side of lifting gear 4. The transmission frame 3 is provided with a transmission groove 10 which is parallel to the magnetic strip 17 groove. The pushing comb 19 is arranged at the upper end of the transfer groove 10 and is configured to move towards the fixed arm 1 and push the magnetic strip 17 out of the magnetic strip 17 groove when being positioned at the same position as the pushing comb 19; the transmission arm is rod-shaped, the middle part is rotatably installed in the transmission groove 10, the middle part of the transmission arm 22 is provided with a transmission shaft which is fixedly installed in the transmission groove, two ends of the transmission arm are bent towards one side of the fixed arm 1 and form a certain angle, the upper end of the transmission arm is connected with the pushing comb 19, the lower end of the transmission arm horizontally extends out of the swing arm 2, when the transmission arm is in contact with the magnetic arm 6, the lower end of the transmission arm takes the rotating shaft as an axis and rotates towards the direction far away from the fixed arm 1, the upper end of the transmission arm rotates towards the direction close to the fixed arm 1, the pushing comb 19 moves towards the direction close to the fixed arm 1 in the reverse direction, and when the pushing comb 19 is configured to be in an initial state, the pushing comb 19 is located in the transmission groove 10, the trigger rod extends out of the swing arm 2.

In the present embodiment, as shown in fig. 6, the pushing comb 19 includes a mounting bar and a plurality of push bars; the mounting rod is in a long rod shape; the push rod extends to fixed arm 1 direction, and every push rod all can insert a magnetic stripe 17 inslot, and a plurality of push rods are fixed on the installation pole and are followed installation pole length direction equipartition interval setting.

During operation, the fixing plate 5 is vertically arranged and tightly attached to the side wall of the foundation to be measured, the fixing plate 5 is fixed on the side wall through screws, and the lifting gear 4 in the initial state is located at the lowest end of the rack 7. Because the reference pointer 9 points to the gravity center direction approximately vertically, the swing arm 2 takes the reference pointer 9 as a reference point to pull the swing arm 2 to the left side, so that the angle between the swing arm 2 and the fixed arm 1 is larger than the angle between the reference pointer 9 and the fixed arm 1, the swing arm 2 is released, because of the acceleration of gravity, the swing arm 2 swings anticlockwise and reaches the fastest speed when the swing arm 2 passes through the vertical state, the swing arm 2 continuously swings anticlockwise and approaches to the fixed arm 1, the transmission frame 3 is driven by the swing arm 2 to approach the magnetic arm 6 continuously, the magnetic strip 17 and the magnetic arm 6 repel each other in the approaching process, so the transmission frame 3 is pushed leftwards relative to the swing arm 2 by a repulsive force, the depth of the installation column 20 inserted into the lifting gear 4 is increased, the reset spring 16 is compressed to accumulate force, the transmission column 18 slides in the spiral groove 15 to drive the lifting gear 4 to rotate anticlockwise, the lifting gear 4 moves upward along the rotation of the rack 7, the lifting spring 12 is compressed, and the transmission frame 3 is kept unchanged in position by the engagement of the brake lever 13 and the transmission groove 10. Since the repulsive force between the magnetic stripe 17 and the magnetic arm 6 rapidly decelerates the swing arm 2, the repulsive force between the magnetic stripe 17 and the magnetic arm 6 increases continuously during the approach thereof. When the velocity of the oscillating arm 2 is reduced to zero, the repulsive force between the magnetic strip 17 and the magnetic arm 6, which is closest to each other, is maximized. The repulsive force of the magnetic strip 17 and the magnetic arm 6 pushes the swing arm 2 in the opposite direction, and the swing arm 2 starts swinging clockwise to the left.

The swing arm 2 is gradually far away from the fixed arm 1 in the process of swinging leftwards and clockwise, the repulsive force between the magnetic strip 17 and the magnetic arm 6 is gradually reduced along with the increase of the angle between the fixed arm 1 and the swing arm 2, and the reset spring 16 releases the stored force to withdraw and reset the transmission frame 3 rightwards relative to the swing arm 2. When the transmission frame 3 moves up to the uppermost end of the swing arm 2, due to the wedge-shaped opening 21 structure, when the fixing arm 1 and the swing arm 2 are contacted, the magnetic arm 6 and the magnetic strip 17 are farthest away and the repulsion force between the two is also minimum. At the moment, in the process that the swing arm 2 swings rightwards and anticlockwise, the lower end of the transmission arm 22 and the magnetic arm 6 are in contact with each other, so that the transmission arm 22 rotates clockwise along the axis of the rotating shaft, the pushing comb 19 is pushed rightwards relative to the swing arm 2 by the upper end of the transmission arm 22, the magnetic strip 17 is synchronously pushed rightwards by the pushing comb 19, the magnetic strip 17 and the brake rod 13 fixedly connected with the magnetic strip 17 are separated from the transmission frame 3, and the dropped magnetic strip 17 is absorbed and recovered by the magnetic arm 6. The brake lever 13 is disengaged from the transfer groove 10, so that the lifting spring 12 is completely released and pushes the lifting gear 4 to move downwards along the clockwise rotation of the rack 7. When the counterweight 14 rotates downwards along with the lifting gear 4, the rotating speed of the lifting gear 4 increases, the acceleration direction is downward, the releasing process of the lifting spring 12 is performed, the resultant force of the lifting gear 4 to the swing arm 2 is downward, and the positive pressure of the swing arm 2 to the hinge shaft increases, so that the rotating resistance becomes larger. When the balancing weight 14 rotates upwards along with the lifting gear 4, the acceleration direction is downward when the rotating speed of the lifting gear 4 is reduced, the releasing process of the lifting spring 12 is carried out, the resultant force of the lifting gear 4 to the swing arm 2 is upward, the rotating resistance of the swing arm 2 to the positive pressure of the hinge shaft is reduced, so that the swing arm 2 can be more easily swung to the vertical position until the swing arm 2 stops swinging, the swing arm 2 stops near the vertical position closer to the reference pointer 9, the distance between the lower end of the swing arm 2 and the lower end of the fixing arm 1 is measured, and the verticality of the side wall of the foundation is obtained.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.