A portable construction engineering detector

Abstract

The present application relates to the technical field of engineering detection, and especially relates to a portable construction engineering detector, which can adjust height.The present application provides a portable construction engineering detector, which can adjust height.The portable construction engineering detector comprises a main frame, a folding mechanism and an adjusting mechanism, the main frame is provided with the folding mechanism for conveniently detecting different height construction engineering, and the adjusting mechanism is arranged between the main frame and the folding mechanism for clamping the folding mechanism.The present application is manually moved downward by a push rod, when the push rod contacts with a wedge-shaped block, the push rod drives the wedge-shaped block and a clamping rod to move forward, so that the folding plate and the detection rod rotate, thereby achieving the effect of adjusting height, and conveniently detecting different height construction engineering.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering detection technology, and more particularly to a portable construction engineering detector. BACKGROUND

[0002] People often use construction engineering detectors to detect steel structure installation projects, but the existing construction engineering detectors are difficult to adjust during use, so the application scope is narrow, and therefore a construction engineering detector needs to be designed.

[0003] The patent with the patent application number CN217236837U discloses a portable construction engineering detector. The detector body is placed on the top of the buffer plate, and then the pull plate is pulled to the opposite side, the pull plate drives the limiting plate to move to the opposite side, and after the cover plate is covered, the pull plate is loosened, the limiting plate moves relatively under the action of the fourth spring, thereby limiting the cover plate. When the construction engineering detector falls or collides during movement, the detector body shakes due to external force, the detector body drives the second protrusion to move, the second protrusion drives the first protrusion to move, the first protrusion moves to compress the first spring, the first spring reversely gives the first protrusion an elastic force, the detector body drives the buffer plate to move, the buffer plate drives the sliding plate to move, the sliding plate moves to compress the second spring, and the second spring reversely gives the sliding plate an elastic force, thereby buffering the external force. The detector is used to detect the engineering by manually moving the detector body, but the height of the detector is difficult to adjust during use, and people need to manually move it, which reduces the detection efficiency.

[0004] We design a portable construction engineering detector that can adjust the height to overcome the difficulty of adjusting the height of the existing detector during use. SUMMARY

[0005] In view of the shortcomings of the prior art, the present application provides a portable construction engineering detector that can adjust the height to overcome the difficulty of adjusting the height of the existing detector.

[0006] To achieve the above purpose, the present application is realized by the following scheme: a portable construction engineering detector, comprising:

[0007] The main frame and the folding mechanism are provided with a folding mechanism for detecting different heights of construction engineering.

[0008] The adjusting mechanism is arranged between the main frame and the folding mechanism for clamping the folding mechanism.

[0009] As an improvement of the above scheme, the folding mechanism comprises:

[0010] A fixed rod is rotatably connected to the front left side of the main frame;

[0011] A folding plate is connected to the lower side of the fixed rod, and a plurality of folding plates are combined by a rotatable connection;

[0012] A detection rod is rotatably connected to the folding plate on the last side;

[0013] A detector is installed on the right side of the top of the detection rod;

[0014] A first torsional spring is connected between the fixed rod and the main frame, and the first torsional spring is wound around the fixed rod;

[0015] A second torsional spring is connected between the folding plate and the folding plate on the rear side, and a second torsional spring is connected between the folding plate on the last side and the detection rod, and the second torsional spring is wound around the folding plate.

[0016] As an improvement of the above scheme, the adjusting mechanism comprises:

[0017] A guide frame is provided with a through hole in the middle of the folding plate, a through hole is provided in the middle of the detection rod, and a guide frame is connected to the top of the main frame on both sides;

[0018] A push rod is slidably connected between the guide frames;

[0019] A clamping rod is slidably connected to the middle of the main frame;

[0020] A wedge block is connected to the upper part of the clamping rod;

[0021] A tension spring is connected between the wedge block and the main frame, and the tension spring is wound around the clamping rod.

[0022] As an improvement of the above scheme, a hole is provided on the rear side of the push rod.

[0023] As an improvement of the above scheme, it further comprises a lifting mechanism for pulling the push rod, and the lifting mechanism comprises:

[0024] A pull frame is connected to the push rod;

[0025] A fixed column is connected to the top rear side of the main frame;

[0026] A limiting plate is slidably connected between each group of fixed columns, the pull frame is slidably connected to the limiting plate, and the limiting plate is slidably connected to the main frame;

[0027] A return spring is connected between the bottom and both sides of the limiting plate and the main frame, and the return spring is wound around the fixed column.

[0028] As an improvement to the above solution, a reeling mechanism is also included to facilitate folding the detection rod and the folding plate. The reeling mechanism includes:

[0029] Rack: the left wall of the pull frame is connected with a rack;

[0030] Spur gear: a spur gear is rotatably connected to the left side of the top of the main frame, and the rack is meshed with the spur gear;

[0031] A rotating shaft is rotatably connected to the left side of the top of the main frame;

[0032] An acceleration gear set is connected between the rotating shaft and the transmission shaft of the spur gear;

[0033] A protective frame is connected to the left side of the top of the main frame, and the rotating shaft is located inside the protective frame;

[0034] A spring is connected between the rotating shaft and the protective frame;

[0035] A draw rope is wound around the rotating shaft;

[0036] A guide wheel is rotatably connected to the left side of the top of the main frame, and the pull rope passes around the guide wheel and is connected to the detection rod.

[0037] As an improvement to the above solution, a disengagement mechanism for clamping the rotating shaft is also included, and the disengagement mechanism includes:

[0038] A ratchet wheel is connected to the lower side of the rotating shaft;

[0039] Limiting frame, the left side of the top of the main frame is rotatably connected to the limiting frame;

[0040] A third torsion spring is connected between the limit frame and the main frame, and the third torsion spring is wound around the lower side of the limit frame;

[0041] The damping frame is rotatably connected to the left side of the top of the main frame.

[0042] As an improvement to the above solution, a proofreading mechanism for adjusting the horizontal state of the main frame is also included, and the proofreading mechanism includes:

[0043] A proofreading disk is connected to the middle of the top of the main frame;

[0044] A graduated dial is connected to the middle of the top of the calibration disc;

[0045] A rotating rod is rotatably connected to the middle of the dial;

[0046] A connecting rope is connected to the rotating rod;

[0047] A gravity block is connected to the connecting rope.

[0048] The present application has the advantages of: 1. The present application realizes the height adjusting effect by manually moving the push rod downward, and the push rod drives the wedge and the clamping rod to move forward when the push rod contacts the wedge, so that the folding plate and the detection rod rotate, thereby facilitating people to detect different height construction projects;

[0049] 2. The rotation of the rotating shaft drives the ratchet wheel to rotate, so that the limiting frame rotates clockwise, and the third torsional spring is twisted and deformed, and when the ratchet wheel rotates away from the limiting frame, the third torsional spring resets to drive the limiting frame to rotate counterclockwise and contact the ratchet wheel, thereby realizing the clamping effect and avoiding easy rotation of the rotating shaft;

[0050] 3. The main frame body is adapted to be attached to the wall by people, so that the gravity block swings adaptively, thereby driving the connecting rope to rotate the rotating rod, and people can adaptively adjust the horizontal state of the main frame body according to the direction indicated by the gravity block, thereby realizing the adjustment state and making the detection result more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 It is a three-dimensional structure schematic view of the present application.

[0052] Figure 2 It is a first partial three-dimensional structure schematic view of the folding mechanism of the present application.

[0053] Figure 3 It is a second partial three-dimensional structure schematic view of the folding mechanism of the present application.

[0054] Figure 4 It is an enlarged three-dimensional structure schematic view of A of the present application.

[0055] Figure 5 It is a three-dimensional structure schematic view of the adjusting mechanism of the present application.

[0056] Figure 6 It is a three-dimensional structure schematic view of the lifting mechanism of the present application.

[0057] Figure 7 It is a partial three-dimensional structure schematic view of the lifting mechanism of the present application.

[0058] Figure 8 It is a three-dimensional structure schematic view of the winding mechanism of the present application.

[0059] Figure 9 It is a partial three-dimensional structure schematic view of the winding mechanism of the present application.

[0060] Figure 10 It is another perspective three-dimensional structure schematic view of the winding mechanism of the present application.

[0061] Figure 11 It is a three-dimensional structure schematic view of the disengaging mechanism of the present application.

[0062] Figure 12 Fig. 1 is a perspective view of the construction engineering detector according to the present application.

[0063] Fig. 1 is a perspective view of the construction engineering detector according to the present application. Fig. 2 is a perspective view of the folding mechanism of the construction engineering detector according to the present application. Fig. 3 is a perspective view of the adjusting mechanism of the construction engineering detector according to the present application. Fig. 4 is a perspective view of the lifting mechanism of the construction engineering detector according to the present application. Fig. 5 is a perspective view of the unwinding mechanism of the construction engineering detector according to the present application. Fig. 6 is a perspective view of the disengaging mechanism of the construction engineering detector according to the present application. Fig. 7 is a perspective view of the calibration mechanism of the construction engineering detector according to the present application. DETAILED DESCRIPTION

[0064] The present application will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0065] Embodiment 1

[0066] A portable construction engineering detector, now referring to Figure 1 , comprising a main frame 1, a folding mechanism 2 and an adjusting mechanism 3, the main frame 1 is provided with the folding mechanism 2, and the main frame 1 and the folding mechanism 2 are provided with the adjusting mechanism 3.

[0067] Now referring to Figure 1 and Figure 4 , the folding mechanism 2 comprises a fixed rod 21, a first torsion spring 22, a folding plate 23, a detector 24, a detection rod 25 and a second torsion spring 26, the left front side of the main frame 1 is rotatably connected with the fixed rod 21, the lower side of the fixed rod 21 is welded with the folding plate 23, the five folding plates 23 are combined by rotatable connection, the folding plate 23 is five, the last folding plate 23 is rotatably connected with the detection rod 25, the top right side of the detection rod 25 is installed with the detector 24, the fixed rod 21 and the main frame 1 are connected with the first torsion spring 22, the first torsion spring 22 is wound around the fixed rod 21, the folding plate 23 and the rear folding plate 23 are connected with the second torsion spring 26, the last folding plate 23 and the detection rod 25 are connected with the second torsion spring 26, the second torsion spring 26 is five, and the second torsion spring 26 is wound around the folding plate 23.

[0068] Now referring to Figure 1 and Figure 5The adjusting mechanism 3 comprises a push rod 31, a guide frame 32, a wedge block 33, a clamping rod 34 and a tension spring 35, the middle of the folding plate 23 is provided with a through hole 36, the middle of the detection rod 25 is provided with a through hole 36, the through hole 36 has six, the left and right sides of the top of the main frame body 1 are both fixedly connected with the guide frame 32 through bolts, the two guide frames 32 are slidably connected with the push rod 31, the rear side of the push rod 31 is provided with a hole, the middle of the main frame body 1 is slidably connected with the six clamping rods 34, the clamping rod 34 is in contact with the through hole 36, the upper part of the clamping rod 34 is welded with the wedge block 33, the wedge block 33 has six, the wedge block 33 is in contact with the main frame body 1, the push rod 31 is in contact with the wedge block 33 after moving, the tension spring 35 is connected between the wedge block 33 and the main frame body 1, the tension spring 35 has six, and the tension spring 35 is wound on the clamping rod 34.

[0069] When people need to detect the construction project, people can use this portable construction project detector 24, the initial state of the first torsional spring 22 and the second torsional spring 26 is in torsional deformation, first people with the bottom of the main frame 1 and the wall surface, so that the detection rod 25 in the upper side, then people manually move the push rod 31 down, when the push rod 31 down and the first wedge block 33 contact, the push rod 31 drive wedge block 33 forward, so that the clamp rod 34 forward, stretch spring 35 is stretched, when the clamp rod 34 forward away from the hole 36, the second torsional spring 26 reset drive detection rod 25 clockwise rotation, so that the detector 24 clockwise rotation, when the detection rod 25 rotation and the main frame 1 contact, the detection rod 25 has been rotated to ninety degrees, so that the detector 24 clockwise rotation ninety degrees, the second torsional spring 26 is still in the state of torsional deformation, then people can detect the construction project, so as to realize the effect of detection, when people need to adjust the height of the detector 24, people can continue to move the push rod 31 down, when the push rod 31 continue to move down and the lower wedge block 33 contact, the push rod 31 according to the above steps drive wedge block 33 and the clamp rod 34 forward, so that the corresponding second torsional spring 26 reset drive the upper side of the folding plate 23 rotation, so that the detection rod 25 rotation, when the detection rod 25 rotation away from the main frame 1, the second torsional spring 26 reset drive the detection rod 25 rotation reset, when the upper side of the folding plate 23 rotation and the main frame 1 contact, the upper side of the folding plate 23 and the detection rod 25 is vertical state, then people can continue to move the push rod 31 down according to the above steps, when the folding plate 23 rotation away from the main frame 1, the corresponding second torsional spring 26 reset drive the folding plate 23 rotation, so that the detection rod 25 upward movement, when people need to move the push rod 31 down according to the need to contact with the last wedge block 33, the first torsional spring 22 reset drive fixed rod 21 counterclockwise rotation, so that the last folding plate 23 counterclockwise rotation, when the last folding plate 23 counterclockwise rotation and the main frame 1 contact, the folding plate 23 has been rotated to ninety degrees, so as to realize the effect of adjusting the height, when people detect complete, people can be away from the wall of the main frame 1, and the main frame 1 holding horizontally, then people manually rotate the detection rod 25, so that the detector 24 rotation, the second torsional spring 26 torsional deformation, when the detection rod 25 rotation and the main frame 1 parallel, people continue to move forward the detection rod 25, so that the folding plate 23 rotation, so that the corresponding second torsional spring 26 torsional deformation, so operation, when the most forward side of the folding plate 23 clockwise rotation, the fixed rod 21 clockwise rotation, the first torsional spring 22 torsional deformation, when the most forward side of the folding plate 23 clockwise rotation ninety degrees, people can stop moving the detection rod 25 inside, so as to realize the effect of folding, then people manually move the push rod 31 back, when the push rod 31 back away from the wedge block 33, stretch spring 35 reset drive wedge block 33 down, so that the clamp rod 34 down to the hole 36, so as to realize the effect of locking,When the push rod 31 moves backward away from the last side wedge block 33, people can stop moving the push rod 31 backward, and then people can take the portable construction engineering detector 24 away through the hole on the push rod 31, so as to realize the effect of facilitating carrying.

[0070] Embodiment 2

[0071] On the basis of embodiment 1, now referring to Figure 1 、 Figure 6 and Figure 7 , further comprising a lifting mechanism 4, the lifting mechanism 4 comprising a pull frame 41, a limiting plate 42, a fixed column 43 and a return spring 44, the pull frame 41 is welded on the push rod 31, two groups of fixed columns 43 are welded on the top rear side of the main frame body 1, each two fixed columns 43 form a group, the fixed column 43 has four, the limiting plate 42 is slidingly connected between each group of fixed columns 43, the pull frame 41 is slidingly connected with the limiting plate 42, the limiting plate 42 is in contact with the detection rod 25, the limiting plate 42 is slidingly connected with the main frame body 1, the return spring 44 is connected between the bottom of the limiting plate 42 and the left and right sides of the main frame body 1, the return spring 44 is wound on the fixed column 43, and the return spring 44 has four.

[0072] Now referring to Figure 1 、 Figure 8 、 Figure 9 and Figure 10 , further comprising a winding mechanism 5, the winding mechanism 5 comprising a rack 51, a spur gear 52, an acceleration gear set 53, a rotating shaft 54, a pull rope 55, a clockwork 56, a protective frame 57 and a guide wheel 58, the rack 51 is welded on the left wall of the pull frame 41, the spur gear 52 is rotationally connected to the top left side of the main frame body 1, the rack 51 is meshed with the spur gear 52, the rotating shaft 54 is rotationally connected to the top left side of the main frame body 1, the acceleration gear set 53 is connected between the transmission shaft of the spur gear 52 and the rotating shaft 54, the acceleration gear set 53 is composed of a large gear and a small gear, the large gear is connected to the transmission shaft of the spur gear 52, the small gear is connected to the lower side of the rotating shaft 54, the large gear is meshed with the small gear, the protective frame 57 is welded on the top left side of the main frame body 1, the rotating shaft 54 is located inside the protective frame 57, the clockwork 56 is connected between the rotating shaft 54 and the protective frame 57, the pull rope 55 is wound on the rotating shaft 54, and the guide wheel 58 is rotationally connected to the top left side of the main frame body 1. The pull rope 55 passes through the guide wheel 58 and is connected with the detection rod 25.

[0073] Now referring to Figure 1 and Figure 11Further comprising a disengaging mechanism 6, the disengaging mechanism 6 comprises a ratchet wheel 61, a damping bracket 62, a limiting bracket 63 and a third torsional spring 64, the ratchet wheel 61 is welded on the lower side of the rotating shaft 54, the limiting bracket 63 is rotatably connected to the top left side of the main frame 1 and is in contact with the ratchet wheel 61, the third torsional spring 64 is connected between the limiting bracket 63 and the main frame 1 and is wound on the lower side of the limiting bracket 63, and the damping bracket 62 is rotatably connected to the top left side of the main frame 1 and is in contact with the limiting bracket 63.

[0074] Reference will now be made to Figure 1 And Figure 12 Further comprising a proofreading mechanism 7, the proofreading mechanism 7 comprises a proofreading disc 71, a dial 72, a gravity block 73, a connecting rope 74 and a rotating rod 75, the proofreading disc 71 is fixedly connected to the top middle of the main frame 1 by bolts, the dial 72 is connected to the top middle of the proofreading disc 71, the rotating rod 75 is rotatably connected to the middle of the dial 72, the connecting rope 74 is connected to the rotating rod 75, and the gravity block 73 is connected to the connecting rope 74.

[0075] The initial position limiting plate 42 clamps the detection rod 25, when people contact the bottom of the main frame 1 with the wall, people can manually move the pull bracket 41 downward as needed, when the inclined surface of the pull bracket 41 contacts the limiting plate 42, the pull bracket 41 moves downward while driving the limiting plate 42 to move forward, so that the return spring 44 is stretched, when the limiting plate 42 moves forward away from the detection rod 25, the second torsional spring 26 resets to drive the detection rod 25 to rotate clockwise, so as to facilitate people to move the push rod 31, when the frontmost folding plate 23 rotates clockwise by ninety degrees, at this time the pull bracket 41 is placed horizontally, people can manually move the pull bracket 41 backward, so that the push rod 31 moves backward, when the limiting plate 42 contacts the inclined surface of the pull bracket 41 again, the return spring 44 resets to drive the limiting plate 42 to move downward, and then the limiting plate 42 clamps the detection rod 25.

[0076] The pull bracket 41 moves downward to drive the rack 51 to move downward, so that the spur gear 52 and the acceleration gear set 53 rotate, so that the rotating shaft 54 rotates, and then the rotating shaft 54 releases the pull rope 55, so that the clockwork 56 is twisted and deformed, and then the second torsional spring 26 resets to drive the detection rod 25 to rotate, so that the pull rope 55 drives the guide wheel 58 to rotate, when the rack 51 continues to move downward, the rotating shaft 54 continues to release the pull rope 55, the detection rod 25 moves upward, the pull bracket 41 moves upward to drive the rack 51 to move upward, so that the spur gear 52 and the acceleration gear set 53 rotate in the opposite direction, so that the rotating shaft 54 rotates in the opposite direction, and then the rotating shaft 54 winds up the pull rope 55, the guide wheel 58 rotates counterclockwise, so that the clockwork 56 resets, and then the pull rope 55 drives the detection rod 25 to rotate in the opposite direction, people can manually assist the detection rod 25 and the folding plate 23 to fold.

[0077] The initial state third torsion spring 64 is in torsion deformation, the rotating shaft 54 drives the ratchet 61 to rotate, when the ratchet 61 rotates and contacts the limiting frame 63, the ratchet 61 drives the limiting frame 63 to rotate clockwise away from the convex part of the damping frame 62, so that the third torsion spring 64 is in torsion deformation, when the ratchet 61 rotates away from the limiting frame 63, the third torsion spring 64 resets to drive the limiting frame 63 to rotate counterclockwise and contact the convex part of the damping frame 62, then the limiting frame 63 clamps the ratchet 61, so as to realize the limiting effect, avoiding the rotating shaft 54 from rotating easily, when people need to reverse rotate the rotating shaft 54, people can manually rotate the damping frame 62, when the convex part of the damping frame 62 is away from the limiting frame 63, the third torsion spring 64 resets to drive the limiting frame 63 to rotate counterclockwise, when the limiting frame 63 rotates counterclockwise away from the ratchet 61, people can manually move the pull frame 41 backward, so that the rotating shaft 54 reversely rotates, thereby making the ratchet 61 reversely rotate, when the ratchet 61 stops reversely rotating, people manually reversely rotate the damping frame 62, when the convex part of the damping frame 62 reversely rotates and contacts the limiting frame 63, the damping frame 62 drives the limiting frame 63 to rotate clockwise, when the limiting frame 63 rotates clockwise and contacts the ratchet 61, people can stop reversely rotating the damping frame 62.

[0078] When people contact the bottom of the main frame 1 with the wall, the gravity block 73 will move according to the horizontal state of the main frame 1, when the main frame 1 is not placed horizontally on the wall, the direction of the gravity block 73 will be offset, so that the connecting rope 74 pulls the rotating rod 75 to rotate, people can adaptively adjust the horizontal state of the main frame 1 according to the direction of the gravity block 73 on the dial 72, so that the gravity block 73 reversely moves, thereby making the connecting rope 74 reversely rotates the rotating rod 75, when the initial position of the gravity block 73 on the dial 72, people can stop adjusting the main frame 1, so as to realize the effect of keeping horizontal, so that the detector 24 detects the result more accurately.

[0079] For those skilled in the art, other various corresponding changes and deformations can be made according to the above described technical solutions and concepts, and all these changes and deformations should belong to the protection scope of the claims of the present application.

Claims

1. A portable construction project detector, characterized by: Includes: A main frame (1) and a folding mechanism (2), wherein the main frame (1) is provided with the folding mechanism (2) for facilitating inspection of construction projects at different heights; An adjusting mechanism (3) is provided between the main frame (1) and the folding mechanism (2) for clamping the folding mechanism (2); The folding mechanism (2) comprises: A fixing rod (21) is rotatably connected to the front left side of the main frame (1); A folding plate (23), the lower side of the fixed rod (21) is connected to the folding plate (23), and a plurality of folding plates (23) are combined in a rotationally connected manner; A detection rod (25) is rotatably connected to the folding plate (23) on the rearmost side; Detector (24), a detector (24) is installed on the right side of the top of the detection rod (25); A first torsion spring (22), wherein a first torsion spring (22) is connected between the fixing rod (21) and the main frame (1), and the first torsion spring (22) is wound around the fixing rod (21); A second torsion spring (26), wherein the second torsion spring (26) is connected between the folding plate (23) and the rear folding plate (23), and a second torsion spring (26) is connected between the rearmost folding plate (23) and the detection rod (25), and the second torsion spring (26) is wound around the folding plate (23); The regulating mechanism (3) comprises: The guide frame (32) and the folding plate (23) are both provided with a through hole (36) in the middle, the detection rod (25) is also provided with a through hole (36) in the middle, and the left and right sides of the top of the main frame (1) are both connected with the guide frame (32); The push rod (31) and the guide frame (32) are slidably connected with the push rod (31); A card rod (34) is evenly and slidably connected to the middle of the main frame (1); The wedge-shaped block (33) and the upper part of the clamping rod (34) are both connected with the wedge-shaped block (33); A tension spring (35) is connected between the wedge block (33) and the main frame (1), and the tension spring (35) is wound around the clamping rod (34); It also includes a lifting mechanism (4) for pulling the push rod (31), and the lifting mechanism (4) includes: A pull frame (41) is connected to the push rod (31); A fixing column (43), the top rear side of the main frame (1) is connected to the fixing column (43); The limiting plate (42) is slidably connected between each set of fixed columns (43), the pull frame (41) is slidably connected to the limiting plate (42), and the limiting plate (42) is slidably connected to the main frame (1); A return spring (44) is connected between the left and right sides of the bottom of the limit plate (42) and the main frame (1), and the return spring (44) is wound around the fixed column (43).

2. A portable construction engineering detector according to claim 1, characterized in that: The push rod (31) has a hole on its rear side.

3. A portable construction engineering detector according to claim 2, characterized in that: The invention also includes a reeling mechanism (5) for folding the detection rod (25) and the folding plate (23), and the reeling mechanism (5) includes: Rack (51), the left wall of the pull frame (41) is connected with the rack (51); A spur gear (52) is rotatably connected to the left side of the top of the main frame (1), and the rack (51) is meshed with the spur gear (52); A rotating shaft (54) is rotatably connected to the left side of the top of the main frame (1); An acceleration gear set (53) is connected between the rotating shaft (54) and the transmission shaft of the spur gear (52); A protective frame (57) is connected to the left side of the top of the main frame (1), and the rotating shaft (54) is located inside the protective frame (57); A spring (56) is connected between the rotating shaft (54) and the protective frame (57); A drawstring (55) is wound around the rotating shaft (54); A guide wheel (58) is rotatably connected to the left side of the top of the main frame (1), and the pull rope (55) passes around the guide wheel (58) and is connected to the detection rod (25).

4. A portable construction engineering detector according to claim 3, characterized in that: The device further includes a disengagement mechanism (6) for clamping the rotating shaft (54), wherein the disengagement mechanism (6) includes: A ratchet (61) is connected to the lower side of the rotating shaft (54); A limiting frame (63) is rotatably connected to the limiting frame (63) on the left side of the top of the main frame (1); A third torsion spring (64), wherein a third torsion spring (64) is connected between the limiting frame (63) and the main frame (1), and the third torsion spring (64) is wound around the lower side of the limiting frame (63); A damping frame (62) is rotatably connected to the left side of the top of the main frame (1).

5. A portable construction engineering detector according to claim 4, characterized in that: It also includes a calibration mechanism (7) for adjusting the horizontal state of the main frame (1), and the calibration mechanism (7) includes: A proofreading disk (71) is connected to the middle of the top of the main frame (1); A scale plate (72) is connected to the middle of the top of the calibration plate (71); A rotating rod (75) is rotatably connected to the middle of the dial (72); A connecting rope (74), the rotating rod (75) is connected to the connecting rope (74); A gravity block (73) is connected to the connecting rope (74).

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