Prefabricated concrete structure joint deformation measuring device

Abstract

The invention relates to the related technical field of constructional engineering detection, in particular to a prefabricated concrete structure joint deformation measuring device which comprises a foundation support, a depth detection mechanism is arranged on the surface of one side of the foundation support, and a width detection mechanism is arranged on the surface of one side of the depth detection mechanism. According to the prefabricated concrete structure joint deformation measuring device, through arrangement of the depth detection mechanism and the width detection mechanism, when the device is used, one hand of a user is responsible for holding a handle, and the other hand controls a button or measures the width, so that deformation measurement of a concrete structure joint by a single person is realized, the labor cost and the operation difficulty are reduced, and the working efficiency is improved. The detection efficiency is improved, the device is integrated in use, and time and energy are saved.

Description

Technical Field

[0001] The invention relates to the technical field related to construction engineering detection, and in particular to a prefabricated assembled concrete structure joint deformation measuring device. Background Art

[0002] In the field of construction engineering, with the widespread application of prefabricated assembled concrete structures, the detection and monitoring of their structural performance has become increasingly important. Prefabricated assembled concrete structures are assembled by splicing prefabricated components on the construction site. Compared with traditional cast-in-place concrete structures, prefabricated assembled concrete structures have many advantages such as fast construction speed, controllable quality, environmental protection and energy saving. However, the joints between prefabricated components are the weak links of the structure, and their deformation directly affects the safety, durability and applicability of the entire structure. Therefore, the detection of concrete structure joints cannot be underestimated. Therefore, a prefabricated assembled concrete structure joint deformation measurement device is particularly needed.

[0003] However, for the detection of existing concrete structure joints, ultrasonic crack detectors are more commonly used. However, ultrasonic crack detectors have certain limitations in actual operation. The equipment structure is relatively complex, including multiple components such as transmitting transducers, receiving transducers, signal processing units, and display and recording units. When performing detection operations, workers are usually required to operate different components with both hands at the same time. For example, one hand holds the transmitting transducer for positioning, and the other hand holds the receiving transducer to receive signals. In some special detection scenarios or when higher precision is required, it may even require two people to work together to complete the detection process. This undoubtedly increases labor costs and operational difficulty, and reduces detection efficiency. In addition, the device is not integrated enough, and the detection of joint depth and width needs to be carried out twice, which not only consumes a lot of time and energy, but is also prone to measurement errors due to multiple operations, reducing detection accuracy and efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a prefabricated assembled concrete structure joint deformation measuring device to solve the existing concrete structure joint detection proposed in the above background technology. Ultrasonic crack detectors are widely used. Ultrasonic crack detectors have certain limitations in actual operation. The equipment structure is relatively complex, including multiple components such as transmitting transducers, receiving transducers, signal processing units, and display recording units. When performing detection operations, workers are usually required to operate different components with both hands at the same time. For example, one hand holds the transmitting transducer for positioning and the other hand holds the receiving transducer to receive signals. In some special detection scenarios or when higher precision is required, it may even require two people to work together to complete the detection process. This undoubtedly increases labor costs and operation difficulties and reduces detection efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a prefabricated assembled concrete structure joint deformation measuring device, comprising a base bracket, a support block is fixedly connected to the lower surface of the base bracket, a gripping handle is fixedly connected to the upper surface of the base bracket, a motor control button is fixedly connected to the upper surface of the base bracket, a rotating shaft is fixedly connected to the upper surface of the base bracket, a connecting shaft is rotatably connected to one side surface of the rotating shaft, a display screen is fixedly connected to one side surface of the connecting shaft, a depth detection mechanism is arranged on one side surface of the base bracket, and a width detection mechanism is arranged on one side surface of the depth detection mechanism;

[0006] The depth detection mechanism includes a motor housing, a motor, a threaded rod, a limit frame, an ultrasonic transmitting device, an ultrasonic receiving device and a fixing plate, one side surface of the base bracket is fixedly connected to the motor housing, the inner side surface of the motor housing is fixedly connected to the motor, one side surface of the motor is fixedly connected to the threaded rod, one side surface of the motor housing is fixedly connected to the limit frame, one side surface of the threaded rod is slidably connected to the ultrasonic transmitting device, one side surface of the threaded rod is slidably connected to the ultrasonic receiving device, and one side surface of the limit frame is fixedly connected to the fixing plate.

[0007] Preferably, the gripping handle is fixedly connected to the base bracket by bolts, and the motor control buttons are symmetrically arranged in two groups on the left and right sides of the gripping handle and on the upper surface of the base bracket, with two buttons in each group.

[0008] Preferably, the rotating shaft and the connecting shaft are symmetrically arranged in two groups on the left and right sides of the gripping handle, and the upper surface of the basic bracket is provided with one in each group. The display screen forms a rotating structure with the basic bracket through the arrangement of the rotating shaft and the connecting shaft.

[0009] Preferably, the motor housing and the motor are fixedly connected with a group of surfaces on both sides of the front end of the base bracket, one side surface of the motor is fixedly connected with a threaded rod, and the two groups of threaded rods are connected together with the fixed plate to form a rotating structure, and the contact surface of the rotating shaft and the connecting shaft is provided with multiple groups of locking strips.

[0010] Preferably, the ultrasonic transmitting device and the ultrasonic receiving device are respectively arranged above the two groups of threaded rods, and when the motor rotates, the ultrasonic transmitting device and the ultrasonic receiving device move left and right in the limiting frame.

[0011] Preferably, the width detection mechanism comprises a detection bracket, a sliding shaft, an active measuring engaging foot, a connecting slider, a fixed measuring engaging foot, a fixed block, a measuring ruler, a spring, an upper clamping block, a lower clamping block, a connecting column, a button and a limit shaft, one side surface of the depth detection mechanism is fixedly connected with the detection bracket, one side surface of the detection bracket is fixedly connected with the sliding shaft, one side surface of the sliding shaft is slidably connected with the active measuring engaging foot, one side surface of the active measuring engaging foot is fixedly connected with the connecting slider, one side surface of the sliding shaft is slidably connected with the fixed measuring engaging foot, one side surface of the fixed measuring engaging foot is fixedly connected with the fixed block, one side surface of the fixed block is fixedly connected with the measuring ruler, the inner side surface of the fixed measuring engaging foot is fixedly connected with the spring, the lower surface of the spring is fixedly connected with the upper clamping block, the lower surface of the upper clamping block is movably connected with the lower clamping block, the upper surface of the upper clamping block is fixedly connected with the connecting column, the upper surface of the connecting column is fixedly connected with the button, and one side surface of the button is slidably connected with the limit shaft.

[0012] Preferably, the active measuring engaging foot and the fixed measuring engaging foot have substantially the same appearance dimensions, and a hole is provided on one side surface of the connecting slider, in which a measuring ruler can be slidably connected.

[0013] Preferably, the measuring ruler is fixedly connected to the fixed block, and when the active measuring engaging foot moves, the measuring ruler is slidably connected through a hole provided in the connecting slider, and two sets of springs are fixedly connected to the inner surface of the fixed measuring engaging foot.

[0014] Preferably, the size of the upper clamping block matches the size of the lower clamping block, and the button is fixedly connected to the upper clamping block via a connecting column.

[0015] Preferably, a plurality of anti-slip grooves are provided on one side surface of the button, the limit shaft is fixedly connected above the fixed measuring engaging foot, and the button forms a rotating structure with the fixed measuring engaging foot through the setting of the limit shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the prefabricated assembled concrete structure joint deformation measuring device, through the setting of the depth detection mechanism, when in use, the user is responsible for holding the gripping handle with one hand, and controlling the button above the base bracket with the other hand, the button controls the motor in the motor housing to rotate clockwise and counterclockwise, the motor drives the threaded rod, and controls the displacement of the ultrasonic transmitting device and the ultrasonic receiving device in the limit frame by cooperating with the limit frame, because the fixing plate separates the two displacement rods, the ultrasonic transmitting device and the ultrasonic receiving device have independent displacement systems, and the user only needs to adjust the distance between the two according to the size of the crack and the needs. Through the regulation, deformation measurement of concrete structure joints by one person can be realized, which reduces labor cost and operation difficulty and improves detection efficiency. Through the setting of the width detection mechanism, when in use, the user first presses the button to adjust the position of the fixed measuring card foot to fit the left end of the concrete structure joint, then cancels the pressing, and then slides the active measuring card foot to fit the right end of the concrete structure joint. After the displacement is completed, the user reads the reading above the measuring ruler to realize the opening width of the concrete structure joint. With this setting, the depth detection mechanism can be used to detect the depth of the crack while also detecting the width of the crack, making the device integrated and saving time and energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the side appearance structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the basic support part of the present invention;

[0019] Figure 3 This is a schematic diagram of the cooperation between the rotating shaft and the connecting shaft of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the power part of the depth detection mechanism of the present invention;

[0021] Figure 5 It is a schematic diagram of the overall structure of the depth detection mechanism of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the width detection mechanism of the present invention;

[0023] Figure 7 It is a schematic diagram of the measurement structure of the width detection mechanism of the present invention;

[0024] Figure 8 It is a schematic diagram of the fixing structure of the measuring engaging foot of the width detection machine of the present invention.

[0025] In the figure: 1. basic bracket; 2. support block; 3. gripping handle; 4. motor control button; 5. rotating shaft; 6. connecting shaft; 7. display screen; 8. depth detection mechanism; 801. motor housing; 802. motor; 803. threaded rod; 804. limit frame; 805. ultrasonic transmitting device; 806. ultrasonic receiving device; 807. fixing plate; 9. width detection mechanism; 901. detection bracket; 902. sliding shaft; 903. active measuring engaging foot; 904. connecting slider; 905. fixed measuring engaging foot; 906. fixing block; 907. measuring ruler; 908. spring; 909. upper clamping block; 910. lower clamping block; 911. connecting column; 912. button; 913. limit shaft. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-8 The present invention provides a technical solution: a prefabricated assembled concrete structure joint deformation measuring device, comprising a basic bracket 1, a support block 2 is fixedly connected to the lower surface of the basic bracket 1, a gripping handle 3 is fixedly connected to the upper surface of the basic bracket 1, a motor control button 4 is fixedly connected to the upper surface of the basic bracket 1, a rotating shaft 5 is fixedly connected to the upper surface of the basic bracket 1, a connecting shaft 6 is rotatably connected to one side surface of the rotating shaft 5, a display screen 7 is fixedly connected to one side surface of the connecting shaft 6, a depth detection mechanism 8 is arranged on one side surface of the basic bracket 1, and a width detection mechanism 9 is arranged on one side surface of the depth detection mechanism 8;

[0028] The depth detection mechanism 8 includes a motor housing 801, a motor 802, a threaded rod 803, a limit frame 804, an ultrasonic transmitting device 805, an ultrasonic receiving device 806 and a fixing plate 807. One side surface of the base bracket 1 is fixedly connected to the motor housing 801, the inner side surface of the motor housing 801 is fixedly connected to the motor 802, one side surface of the motor 802 is fixedly connected to the threaded rod 803, one side surface of the motor housing 801 is fixedly connected to the limit frame 804, one side surface of the threaded rod 803 is slidably connected to the ultrasonic transmitting device 805, one side surface of the threaded rod 803 is slidably connected to the ultrasonic receiving device 806, one side surface of the limit frame 804 is fixedly connected to the fixing plate 807, through the motor housing 801, the motor 802, the threaded rod 803, the limit frame 804, the ultrasonic transmitting device 805, the ultrasonic receiving device 806 The ultrasonic receiving device 806 and the fixing plate 807 are arranged. When in use, the user is responsible for holding the gripping handle 3 with one hand and controlling the motor control button 4 above the basic bracket 1 with the other hand. The motor control button 4 controls the motor 802 in the motor housing 801 to rotate clockwise and counterclockwise. The motor 802 drives the threaded rod 803 and cooperates with the limit frame 804 to control the displacement of the ultrasonic transmitting device 805 and the ultrasonic receiving device 806 in the limit frame 804. Since the fixing plate 807 separates the two threaded rods 803, the ultrasonic transmitting device 805 and the ultrasonic receiving device 806 have independent displacement systems. The user only needs to adjust the distance between the two according to the size and needs of the crack, so as to realize the deformation measurement of the concrete structure joint by a single person, reduce the labor cost and operation difficulty, and improve the detection efficiency.

[0029] Furthermore, the gripping handle 3 is fixedly connected to the base bracket 1 by bolts, and the motor control buttons 4 are symmetrically arranged in two groups on the left and right of the gripping handle 3 and the upper surface of the base bracket 1, with two buttons in each group. Through the setting of the gripping handle 3, a stable gripping position is provided for the user when in use, which facilitates easy movement and positioning of the device during the detection process, without the need for both hands to perform complicated operations at different positions, thereby greatly improving the convenience and efficiency of operation.

[0030] Furthermore, the rotating shaft 5 and the connecting shaft 6 are symmetrically arranged in two groups on the left and right of the gripping handle 3 and on the upper surface of the basic bracket 1, and each group is provided with one. The display screen 7 forms a rotating structure with the basic bracket 1 through the arrangement of the rotating shaft 5 and the connecting shaft 6. Through the arrangement of the rotating shaft 5, the connecting shaft 6 and the display screen 7, the angle of the display screen 7 can be flexibly adjusted when the characters are in use, so as to avoid affecting the reading and observation of the detection data due to light reflection or poor viewing angle, thereby improving work efficiency.

[0031] Furthermore, the motor housing 801 and the motor 802 are fixedly connected to a group of both side surfaces of the front end of the basic bracket 1, and a threaded rod 803 is fixedly connected to one side surface of the motor 802, and the two groups of threaded rods 803 are connected together with the fixed plate 807 to form a rotating structure, and the contact surfaces of the rotating shaft 5 and the connecting shaft 6 are provided with multiple groups of locking strips. Through the setting of the rotating shaft 5 and the connecting shaft 6, when in use, the stability of the connection between the display screen 7 and the basic bracket 1 is greatly enhanced, and accidental sliding or loosening between the rotating shaft 5 and the connecting shaft 6 can be prevented, thereby ensuring that the user can continuously and stably observe the detection data displayed on the display screen 7.

[0032] Furthermore, the ultrasonic transmitting device 805 and the ultrasonic receiving device 806 are respectively arranged above the two groups of threaded rods 803, and when the motor 802 rotates, the ultrasonic transmitting device 805 and the ultrasonic receiving device 806 move left and right in the limiting frame 804. Through the setting of the motor 802 and the threaded rod 803, when in use, the user can adjust the position of the ultrasonic transmitting device 805 and the ultrasonic receiving device 806 by controlling the motor 802. There is no need to hold the transmitting transducer in one hand and the receiving transducer in the other hand like traditional ultrasonic detection equipment, which greatly reduces labor costs and operating difficulties. The user can focus more on observing the detection data and controlling the device, thereby improving the detection efficiency.

[0033] Furthermore, the width detection mechanism 9 includes a detection bracket 901, a sliding shaft 902, an active measurement engaging foot 903, a connecting slider 904, a fixed measurement engaging foot 905, a fixing block 906, a measuring ruler 907, a spring 908, an upper clamping block 909, a lower clamping block 910, a connecting column 911, a button 912 and a limit shaft 913. The detection bracket 901 is fixedly connected to one side surface of the depth detection mechanism 8. The sliding shaft 902 is fixedly connected to one side surface of the detection bracket 901. The sliding shaft 90 2 is slidably connected to an active measuring engaging foot 903, and a connecting slider 904 is fixedly connected to a side surface of the active measuring engaging foot 903. A fixed measuring engaging foot 905 is slidably connected to a side surface of the sliding shaft 902. A fixed block 906 is fixedly connected to a side surface of the fixed measuring engaging foot 905. A measuring ruler 907 is fixedly connected to a side surface of the fixed block 906. A spring 908 is fixedly connected to an inner side surface of the fixed measuring engaging foot 905. A lower surface of the spring 908 is fixedly connected to a The upper clamping block 909, the lower surface of the upper clamping block 909 is movably connected with the lower clamping block 910, the upper surface of the upper clamping block 909 is fixedly connected with a connecting column 911, the upper surface of the connecting column 911 is fixedly connected with a button 912, and the side surface of the button 912 is slidably connected with a limit axis 913, through the detection bracket 901, the sliding shaft 902, the active measurement clamping foot 903, the connecting slider 904, the fixed measurement clamping foot 905, the fixed block 906, the measuring ruler 907, the spring 908 , upper clamping block 909, lower clamping block 910, connecting column 911, button 912 and limit axis 913 are set. When in use, the user first presses button 912 to adjust the position of fixed measuring clamping foot 905 so that it fits the left end of the concrete structure joint, then cancels the pressing, and then slides active measuring clamping foot 903 so that it fits the right end of the concrete structure joint. After the displacement is completed, the user reads the reading above the measuring ruler 907 to realize the opening width of the concrete structure joint. In this way, the depth detection mechanism 8 can detect the depth of the crack while also detecting the width of the crack, making the device integrated and saving time and energy.

[0034] Furthermore, the appearance dimensions of the active measuring engaging foot 903 and the fixed measuring engaging foot 905 are substantially the same, and a hole is provided on one side surface of the connecting slider 904, in which the measuring ruler 907 can be slidably connected. By configuring the active measuring engaging foot 903 and the fixed measuring engaging foot 905, when in use, the appearance dimensions of the active measuring engaging foot 903 and the fixed measuring engaging foot 905 are substantially the same, and can better fit the two sides of the seam, reducing the measurement error caused by the difference in the shape and size of the engaging feet, making the starting position and the ending position of the measurement more accurate, thereby improving the accuracy of measuring the seam width.

[0035] Furthermore, the measuring ruler 907 is fixedly connected to the fixed block 906. When the active measuring engaging foot 903 moves, the measuring ruler 907 is slidably connected through the hole opened by the connecting slider 904. Two sets of springs 908 are fixedly connected to the inner surface of the fixed measuring engaging foot 905. By setting the connecting slider 904 and the measuring ruler 907, when in use, the sliding connection method of the measuring ruler 907 makes reading more convenient. The user can easily see the position of the measuring ruler 907 relative to the connecting slider 904 and quickly obtain the seam width information.

[0036] Furthermore, the size of the upper clamping block 909 is consistent with the size of the lower clamping block 910, and the button 912 is fixedly connected to the upper clamping block 909 through the connecting column 911. Through the arrangement of the upper clamping block 909, the connecting column 911 and the button 912, when in use, if the position of the fixed measuring clamping foot 905 is not good, the fixed measuring clamping foot 905 can be displaced by pressing the button 912, which greatly improves the efficiency of the user in adjusting the position of the device on site.

[0037] Furthermore, a plurality of anti-slip grooves are provided on one side surface of the button 912, and a limit shaft 913 is fixedly connected to the top of the fixed measuring engaging foot 905, and the button 912 forms a rotating structure with the fixed measuring engaging foot 905 through the setting of the limit shaft 913. Through the setting of the button 912, when in use, the anti-slip grooves can ensure that the user's fingers will not slip when pressing the button 912, making the operation more stable and reliable, especially when the position of the fixed measuring engaging foot 905 needs to be precisely controlled, the stable button operation helps to accurately adjust the device and improve the accuracy of the measurement.

[0038] Working principle: This prefabricated assembled concrete structure joint deformation measuring device is provided with a depth detection mechanism 8. When in use, the user is responsible for holding the gripping handle 3 with one hand and controlling the motor control button 4 above the base support 1 with the other hand. The motor control button 4 controls the motor 802 in the motor housing 801 to rotate clockwise and counterclockwise. The motor 802 drives the threaded rod 803 and cooperates with the limit frame 804 to control the displacement of the ultrasonic transmitting device 805 and the ultrasonic receiving device 806 in the limit frame 804. Since the fixing plate 807 separates the two threaded rods 803, the ultrasonic transmitting device 805 and the ultrasonic receiving device 806 are The device 806 has an independent displacement system. The user only needs to adjust the distance between the two according to the size of the crack and the needs, so as to realize the deformation measurement of the concrete structure joint by a single person, reduce the labor cost and operation difficulty, and improve the detection efficiency. Through the setting of the width detection mechanism 9, when using it, the user first presses the button 912 to adjust the position of the fixed measurement clamping foot 905 so that it fits the left end of the concrete structure joint, then cancels the pressing, and then slides the active measurement clamping foot 903 so that it fits the right end of the concrete structure joint. After the displacement is completed, the user reads the reading above the measuring ruler 907 to realize the opening width of the concrete structure joint. With this setting, the depth detection mechanism 8 can detect the depth of the crack while also detecting the width of the crack, so that the device is integrated and time and energy are saved. The model of the motor 802 is WL-37RS528.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated concrete structure joint deformation measuring device, comprising a base support (1), characterized in that: The lower surface of the base bracket (1) is fixedly connected to a support block (2), the upper surface of the base bracket (1) is fixedly connected to a gripping handle (3), the upper surface of the base bracket (1) is fixedly connected to a motor control button (4), the upper surface of the base bracket (1) is fixedly connected to a rotating shaft (5), one side surface of the rotating shaft (5) is rotatably connected to a connecting shaft (6), one side surface of the connecting shaft (6) is fixedly connected to a display screen (7), one side surface of the base bracket (1) is provided with a depth detection mechanism (8), and one side surface of the depth detection mechanism (8) is provided with a width detection mechanism (9); The depth detection mechanism (8) comprises a motor housing (801), a motor (802), a threaded rod (803), a limiting frame (804), an ultrasonic transmitting device (805), an ultrasonic receiving device (806) and a fixing plate (807); one side surface of the base bracket (1) is fixedly connected to the motor housing (801); the inner side surface of the motor housing (801) is fixedly connected to the motor (802); one side surface of the motor (802) is fixedly connected to the threaded rod (803); one side surface of the motor housing (801) is fixedly connected to the limiting frame (804); one side surface of the threaded rod (803) is slidably connected to the ultrasonic transmitting device (805); one side surface of the threaded rod (803) is slidably connected to the ultrasonic receiving device (806); and one side surface of the limiting frame (804) is fixedly connected to the fixing plate (807).

2. A prefabricated concrete structure joint deformation measuring device according to claim 1, characterized in that: The gripping handle (3) is fixedly connected to the base bracket (1) by means of bolts, and the motor control buttons (4) are symmetrically arranged in two groups on the left and right sides of the gripping handle (3) and on the upper surface of the base bracket (1), with two buttons in each group.

3. The prefabricated concrete structure joint deformation measuring device according to claim 1, characterized in that: The rotating shaft (5) and the connecting shaft (6) are symmetrically arranged in two groups on the left and right sides of the gripping handle (3) and on the upper surface of the base bracket (1), with one being arranged in each group. The display screen (7) forms a rotating structure with the base bracket (1) through the arrangement of the rotating shaft (5) and the connecting shaft (6).

4. The prefabricated concrete structure joint deformation measuring device according to claim 1, characterized in that: The motor housing (801) and the motor (802) are fixedly connected to a group of surfaces on both sides of the front end of the base bracket (1); a threaded rod (803) is fixedly connected to a surface on one side of the motor (802), and the two groups of threaded rods (803) are connected to a fixed plate (807) to form a rotating structure; the contact surfaces of the rotating shaft (5) and the connecting shaft (6) are provided with multiple groups of locking strips.

5. The prefabricated concrete structure joint deformation measuring device according to claim 1, characterized in that: The ultrasonic transmitting device (805) and the ultrasonic receiving device (806) are respectively arranged above the two groups of threaded rods (803), and when the motor (802) rotates, the ultrasonic transmitting device (805) and the ultrasonic receiving device (806) move left and right in the limiting frame (804).

6. A prefabricated concrete structure joint deformation measuring device according to claim 1, characterized in that: The width detection mechanism (9) comprises a detection bracket (901), a sliding shaft (902), an active measurement engaging foot (903), a connecting slider (904), a fixed measurement engaging foot (905), a fixed block (906), a measuring ruler (907), a spring (908), an upper clamping block (909), a lower clamping block (910), a connecting column (911), a button (912) and a limit shaft (913); a side surface of the depth detection mechanism (8) is fixedly connected to the detection bracket (901); a side surface of the detection bracket (901) is fixedly connected to the sliding shaft (902); a side surface of the sliding shaft (902) is slidably connected to the active measurement engaging foot (903); a side surface of the active measurement engaging foot (903) is fixedly connected to the connecting slider (904); A fixed measuring engaging foot (905) is slidably connected to a side surface of the shaft (902); a fixed block (906) is fixedly connected to a side surface of the fixed measuring engaging foot (905); a measuring ruler (907) is fixedly connected to a side surface of the fixed block (906); a spring (908) is fixedly connected to an inner side surface of the fixed measuring engaging foot (905); an upper clamping block (909) is fixedly connected to a lower surface of the spring (908); a lower clamping block (910) is movably connected to a lower surface of the upper clamping block (909); a connecting column (911) is fixedly connected to an upper surface of the connecting column (911); a button (912) is fixedly connected to a side surface of the button (912); and a limiting axis (913) is slidably connected to a side surface of the button (912).

7. A prefabricated concrete structure joint deformation measuring device according to claim 6, characterized in that: The active measuring engaging foot (903) and the fixed measuring engaging foot (905) have substantially the same appearance dimensions, and a hole is provided on one side surface of the connecting slider (904), in which the measuring ruler (907) can be slidably connected.

8. The prefabricated concrete structure joint deformation measuring device according to claim 6, characterized in that: The measuring ruler (907) is fixedly connected to the fixed block (906); when the active measuring engaging foot (903) moves, the measuring ruler (907) is slidably connected through a hole provided in the connecting slider (904); and two groups of springs (908) are fixedly connected to the inner surface of the fixed measuring engaging foot (905).

9. The prefabricated concrete structure joint deformation measuring device according to claim 6, characterized in that: The size of the upper clamping block (909) matches the size of the lower clamping block (910), and the button (912) is fixedly connected to the upper clamping block (909) via a connecting column (911).

10. The prefabricated concrete structure joint deformation measuring device according to claim 6, characterized in that: A plurality of anti-slip grooves are provided on one side surface of the button (912); the limit shaft (913) is fixedly connected above the fixed measuring engaging foot (905); and the button (912) forms a rotating structure with the fixed measuring engaging foot (905) through the setting of the limit shaft (913).

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