Sampling device for constructional engineering quality detection

Abstract

The invention discloses a sampling device for constructional engineering quality detection, which comprises a base, the upper surface of the base is fixedly provided with a support and a reinforcing seat, the support is rotatably connected with a guide rail, the upper surface of the reinforcing seat is fixedly provided with a blocking seat, the guide rail is slidably connected with a sliding seat, and the sliding seat is fixedly connected with the blocking seat. According to the sampling device for constructional engineering quality detection, the coring machine is fixed to the sliding base, the sliding base is arranged on the guide rail in a sliding connection relation, meanwhile, the guide rail can rotate on the support, the coring machine is fixedly installed on the sliding base, and moving wheels are further arranged on the bottom face of the base. And when the guide rail drives the coring machine to be in a horizontal or vertical state, the connecting relation between the guide rail and the blocking seat can be locked by using the connecting assembly in the blocking seat, so that the sampling stability of the whole device can be improved, different working environments and sampling requirements are met, the sampling quality can be improved, and the service life of the device can be prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, in particular to a sampling device for construction engineering quality detection. Background Art

[0002] In building quality inspection, concrete core samples are taken from buildings or structures by a coring machine to analyze the mechanical properties of concrete such as compressive strength, which is an important indicator for evaluating the structural safety and durability of buildings.

[0003] At the same time, in the actual detection and sampling, it is necessary to sample the concrete walls and concrete floors. However, when the traditional coring machine is sampling, the violent vibration generated by the operation of its own motor will affect the actual sampling effect of the coring machine. For this reason, we proposed a sampling device for construction project quality inspection to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a sampling device for construction engineering quality inspection to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sampling device for construction engineering quality inspection, comprising: a base, a bracket and a reinforcement base are fixedly installed on the upper surface of the base, a guide rail is rotatably connected to the bracket, a stopper is fixedly installed on the upper surface of the reinforcement base, a slide is slidably connected to the guide rail, a coring machine is fixedly installed on the slide, and a moving wheel is also arranged on the bottom surface of the base; a connecting assembly is arranged on the stopper, and the connecting assembly comprises an extension shaft rotatably arranged inside the stopper, a disc shaft and a main bevel gear, and the end surface of the extension shaft and the end surface of the disc shaft are fixedly provided with A square short rod, a bolt is slidably provided on the square short rod, a second nut is threadedly connected to the bolt, and the second nut is fixedly installed on the side wall of the inner cavity of the block seat, the connecting assembly also includes a movable shaft movably connected to the block seat, a circular friction block is fixedly installed on the end of the movable shaft, and a secondary bevel gear is fixedly installed on the end of the extension shaft away from the square short rod, and the secondary bevel gear is also meshed and transmission-connected with the main bevel gear; a stabilizing assembly and an adjusting assembly are respectively provided on the base, and the stabilizing assembly includes a fixing cylinder fixedly installed on the bottom surface of the base, and a connecting shaft and a steering shaft rotatably provided on the base, The fixing cylinder is slidably provided with a slide cylinder, and the bottom end of the slide cylinder is fixedly installed with a bottom plate, and a threaded rod is fixedly installed on the bottom surface of the connecting shaft, and a first nut threadedly connected to the threaded rod is also fixedly installed inside the slide cylinder, and the stabilizing component also includes a first pulley group arranged in the internal cavity of the base; the adjusting component includes a U-shaped seat and a fixed seat fixedly installed on the top surface of the base, a sliding block is slidably provided inside the U-shaped seat, and an auxiliary shaft is rotatably connected to the top surface of the sliding block, and a square long rod is fixedly installed on the top surface of the auxiliary shaft, and a first transmission shaft slidably connected to the square long rod is rotatably provided on the top surface of the U-shaped seat. A bearing is arranged inside the fixed seat, and the fixed seat is rotatably connected to the second transmission shaft through the bearing, a second pulley group is arranged on the second transmission shaft, and the second transmission shaft is transmission-connected to the first transmission shaft through the second pulley group, a circular rod is also movably connected to the fixed seat, and a first friction ring and a second friction ring are fixedly mounted on the circular rod respectively, the adjustment assembly also includes a driving shaft rotatably arranged inside the base, a sliding rod is slidably arranged on the driving shaft, a stopping friction block is fixedly mounted on the end of the sliding rod, and a second spring is fixedly mounted on the bottom surface of the sliding rod, and the lower end of the second spring is fixedly connected to the driving shaft.

[0006] Preferably, a limiting block is fixedly installed at the end of the bolt on the square short rod, and a stopper is fixedly installed at the end of the slide cylinder on the threaded rod.

[0007] Preferably, the stopper is designed as an L-shaped structure, and both end surfaces of the stopper can contact the side surfaces of the bracket.

[0008] Preferably, the lower end of the movable shaft is fixedly connected to the upper end of the rectangular long rod, and the central axis of the auxiliary shaft coincides with the central axis of the movable shaft.

[0009] Preferably, the first pulley set bypasses the steering shaft to achieve a transmission connection relationship between the connecting shaft and the driving shaft.

[0010] Preferably, the first friction ring is located above the driving shaft, and a cavity for accommodating the round rod is provided on the driving shaft.

[0011] Preferably, the second friction ring is located above the first friction ring, and the second friction ring is located below the second transmission shaft.

[0012] Preferably, an insert block is slidably provided on the slider, a connecting plate is fixedly installed inside the slider, a first spring is fixedly installed on the side of the insert block, the end of the first spring away from the insert block is fixedly connected to the connecting plate, and the insert block is also plugged into the U-shaped seat.

[0013] Preferably, a circular shaft is rotatably provided on the slider, a connecting rod is movably connected to the outer surface of the circular shaft, an end of the connecting rod away from the circular shaft is movably connected to the insert block, and a knob is fixedly installed on the end of the circular shaft passing through the slider.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention first fixes the coring machine on a slide seat, and the slide seat is set on a guide rail in a sliding connection relationship. At the same time, the guide rail can rotate on the bracket, and when the guide rail drives the coring machine to be in a horizontal or vertical state, the connection relationship between the guide rail and the block seat can be locked by using a connecting component in the block seat. Therefore, the stability of the overall device during sampling can be improved, which can meet different working environments and sampling requirements while also improving the sampling quality and the service life of the equipment.

[0015] The present invention also adds a stabilizing component at the bottom of the base. Therefore, when the whole structure is moved to a designated position for sampling, the bottom plate in the stabilizing component can be used to contact the ground. The friction of the whole device can be increased by increasing the contact area, thereby further improving the stability of the whole device and ensuring that the coring machine can stably perform the coring step. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall bottom structure of the present invention; Figure 3 It is a schematic cross-sectional view of the block seat structure of the present invention; Figure 4 It is an exploded schematic diagram of the circular friction block structure of the present invention; Figure 5 It is a schematic cross-sectional view of the slider structure of the present invention; Figure 6 This is an exploded schematic diagram of the U-shaped seat structure of the present invention; Figure 7 It is a schematic cross-sectional view of the fixed cylinder structure of the present invention; Figure 8 It is an exploded schematic diagram of the threaded rod structure of the present invention; Fig. 9 It is a schematic cross-sectional view of the base structure of the present invention; Fig.10 It is a schematic cross-sectional view of the U-shaped seat and the fixed seat structure of the present invention; Fig.11 It is an exploded schematic diagram of the second spring structure of the present invention.

[0017] In the figure: 1, base; 2, bracket; 3, guide rail; 4, slide seat; 5, coring machine; 6, stop seat; 7, reinforcement seat; 8, stabilizing assembly; 81, bottom plate; 82, fixed cylinder; 83, slide cylinder; 84, threaded rod; 85, first nut; 86, connecting shaft; 87, stopper; 88, first pulley group; 89, steering shaft; 9, connecting assembly; 91, bolt; 92, second nut; 93, square short rod; 94, extension shaft; 95, disc shaft; 96, secondary bevel gear; 97, main bevel gear; 98, movable shaft; 99, circular friction block; 910, limit block; 10, adjustment Components: 101, rectangular long rod; 102, auxiliary shaft; 103, slider; 104, U-shaped seat; 105, plug block; 106, first spring; 107, connecting plate; 108, connecting rod; 109, round shaft; 1010, knob; 1011, first transmission shaft; 1012, driving shaft; 1013, stop friction block; 1014, fixed seat; 1015, round rod; 1016, first friction ring; 1017, second friction ring; 1018, bearing; 1019, second transmission shaft; 1020, second pulley set; 1021, second spring; 1022, slider. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-11The present invention provides a technical solution: a sampling device for construction engineering quality inspection, comprising: a base 1, a bracket 2 and a reinforcement seat 7 are fixedly installed on the upper surface of the base 1, a guide rail 3 is rotatably connected to the bracket 2, a stopper 6 is fixedly installed on the upper surface of the reinforcement seat 7, a slide seat 4 is slidably connected to the guide rail 3, a corer 5 is fixedly installed on the slide seat 4, and a moving wheel is also arranged on the bottom surface of the base 1. The establishment of the moving wheel can enhance the flexibility of the overall device to meet the sampling needs of different areas; the stopper 6 is an L-shaped structure design, and both end faces of the stopper 6 can contact the side of the bracket 2, and the stopper 6 can be used to limit the unexpected displacement of the guide rail 3 and the corer 5 to ensure that the user can use the corer 5 for stable and limited sampling.

[0020] The block seat 6 is provided with a connecting assembly 9, which includes an extended shaft 94, a disc shaft 95 and a main bevel gear 97 rotatably arranged inside the block seat 6. The end faces of the extended shaft 94 and the disc shaft 95 are fixedly provided with a square short rod 93, on which a bolt 91 is slidably provided, and a second nut 92 is threadedly connected to the bolt 91. The second nut 92 is fixedly installed on the side wall of the inner cavity of the block seat 6. The connecting assembly 9 also includes a movable shaft 98 movably connected to the block seat 6. The movable shaft 9 A circular friction block 99 is fixedly installed on the end of the extension shaft 94, and a secondary bevel gear 96 is fixedly installed on the end of the extension shaft 94 away from the square short rod 93. The secondary bevel gear 96 is also meshed and transmission-connected with the main bevel gear 97; and two threaded holes are respectively set on the guide rail 3, which are respectively threadedly connected with two bolts 91, so as to achieve the purpose of locking the position of the guide rail 3, and a through hole for passing the movable shaft 98 is also set on the main bevel gear 97 to prevent the movable shaft 98 from affecting the normal transmission effect of the main bevel gear 97.

[0021] A stabilizing component 8 and an adjusting component 10 are respectively provided on the base 1. The stabilizing component 8 includes a fixed cylinder 82 fixedly mounted on the bottom surface of the base 1, and a connecting shaft 86 and a steering shaft 89 rotatably arranged on the base 1. A slide cylinder 83 is slidably arranged on the fixed cylinder 82. A bottom plate 81 is fixedly mounted on the bottom end of the slide cylinder 83. A threaded rod 84 is fixedly mounted on the bottom surface of the connecting shaft 86. A first nut 85 threadedly connected to the threaded rod 84 is also fixedly mounted inside the slide cylinder 83. The stabilizing component 8 also includes a first pulley group 88 arranged in the internal cavity of the base 1; a square short rod 93 is fixedly mounted with a limit block 910 at the end of the bolt 91, and a stop block 87 is fixedly mounted on the end of the threaded rod 84 at the end of the slide cylinder 83. The establishment of the stop block 87 and the limit block 910 can prevent the slide cylinder 83 and the bolt 91 and other structures from being detached, thereby ensuring the stability of the overall structure.

[0022] The adjustment component 10 includes a U-shaped seat 104 and a fixed seat 1014 fixedly mounted on the top surface of the base 1, a slider 103 is slidably arranged inside the U-shaped seat 104, the top surface of the slider 103 is rotatably connected to the auxiliary shaft 102, a rectangular long rod 101 is fixedly mounted on the top surface of the auxiliary shaft 102, and at the same time, a through hole for passing the rectangular long rod 101 is also opened on the U-shaped seat 104 to ensure that the rectangular long rod 101 has a stable sliding connection relationship with the first transmission shaft 1011, the top surface of the U-shaped seat 104 is rotatably arranged with a first transmission shaft 1011 slidably connected to the square long rod 101, a bearing 1018 is arranged inside the fixed seat 1014, and the fixed seat 1014 is rotatably connected to the second transmission shaft 1019 through the bearing 1018, and the second transmission shaft A second pulley set 1020 is provided on 1019, and the second transmission shaft 1019 is connected to the first transmission shaft 1011 through the second pulley set 1020. The second transmission shaft 1019 is designed as a ring structure, and the inner hole diameter of the second transmission shaft 1019 is larger than the maximum outer diameter of the circular rod 1015. Therefore, the circular rod 1015 can flexibly pass through the second transmission shaft 1019 and slide up and down to avoid affecting the transmission demand of the second transmission shaft 1019 driving the first transmission shaft 1011 to rotate through the second pulley set 1020. The fixed seat 1014 is also movably connected with the circular rod 1015, and the first friction ring 1016 and the second friction ring 1017 are fixedly installed on the circular rod 1015 respectively. The adjustment component 10 also includes a rotating device arranged on the base The driving shaft 1012 inside the seat 1, the driving shaft 1012 is slidably provided with a slide bar 1022, the end of the slide bar 1022 is fixedly installed with a stop friction block 1013, and the bottom surface of the slide bar 1022 is fixedly installed with a second spring 1021, the lower end of the second spring 1021 is fixedly connected to the driving shaft 1012, the lower end of the movable shaft 98 is fixedly connected to the upper end of the rectangular long rod 101, the central axis of the auxiliary shaft 102 coincides with the central axis of the movable shaft 98, the first pulley group 88 bypasses the steering shaft 89 to realize the transmission connection relationship between the connecting shaft 86 and the driving shaft 1012, the first friction ring 1016 is located above the driving shaft 1012, and a cavity for accommodating the round rod 1015 is opened on the driving shaft 1012, and the second friction ring 101 7 is located above the first friction ring 1016, and the second friction ring 1017 is located below the second transmission shaft 1019. A plug block 105 is slidably arranged on the slider 103, and a connecting plate 107 is fixedly installed inside the slider 103. The addition of structures such as the plug block 105 can lock the position of the slider 103 on the U-shaped seat 104 to meet the transmission requirements of structures such as the rectangular long rod 101, the auxiliary shaft 102, and the first transmission shaft 1011. A first spring 106 is fixedly installed on the side of the plug block 105, and the end of the first spring 106 away from the plug block 105 is fixedly connected to the connecting plate 107. The plug block 105 is also plugged into the U-shaped seat 104. A round shaft 109 is also rotatably arranged on the slider 103, and a connecting rod 108 is movably connected to the outer surface of the round shaft 109.The end of the connecting rod 108 away from the circular shaft 109 is movably connected to the plug block 105, and the end of the circular shaft 109 passing through the slider 103 is fixedly installed with a knob 1010. The establishment of the knob 1010 can facilitate the actual operation of the user to ensure the practicality of the overall structure.

[0023] Working principle: When sampling the concrete floor, first turn the knob 1010, and the circular shaft 109 fixedly connected to the knob 1010 will rotate synchronously inside the slider 103, and the two ends of the connecting rod 108 are movably connected to the plug block 105 and the circular shaft 109 respectively. After the circular shaft 109 rotates, the plug block 105 can be pulled toward the inside of the slider 103, so that the plug block 105 is separated from the U-shaped seat 104 fixed on the base 1. At this time, the slider 103 can be pushed to slide downward on the U-shaped seat 104, and the slider 103 and the rectangular long rod 101 are rotatably connected by the auxiliary shaft 102. The movable shaft 98 fixed at the upper end of the rectangular long rod 101 and the circular friction block 99 slide downward synchronously until the friction pattern on the circular friction block 99 is aligned with the main conical gear. The friction pattern of the wheel 97 is in close contact, and the knob 1010 is loosened. Because the two ends of the first spring 106 are respectively fixedly connected to the plug block 105 and the connecting plate 107 fixed inside the slider 103, the plug block 105 can slide toward the inside of the U-shaped seat 104 again under the action of the first spring 106 until it is inserted into the inside of the U-shaped seat 104 to lock the position of the slider 103 and other structures, and then the circular rod 1015 is pulled upward, so that the friction pattern of the second friction ring 1017 fixed on the circular rod 1015 is in close contact with the friction pattern of the second transmission shaft 1019. When the circular rod 1015 is rotated, the second transmission shaft 1019 rotatably connected to the fixed seat 1014 by the bearing 1018 rotates synchronously, and the second transmission shaft 1019 is connected to the first transmission shaft 1019. A transmission shaft 1011 also utilizes the second pulley set 1020 for transmission connection, so the first transmission shaft 1011 rotates together, and the square long rod 101 is in a sliding connection with the first transmission shaft 1011. Therefore, under the transmission of the square long rod 101, the movable shaft 98, the circular friction block 99 and other structures, the main bevel gear 97 rotates synchronously inside the block seat 6, and the main bevel gear 97 is meshed and connected with the secondary bevel gear 96 fixed on the extension shaft 94. The square short rod 93 fixed at the end of the extension shaft 94 rotates together inside the connecting component 9, and the square short rod 93 is also slidably connected with the bolt 91, and the bolt 91 is also threadedly connected with the second nut 92 fixed inside the block seat 6. When the extension shaft 94 rotates, the horizontal nut 92 inside the block seat 6 The bolt 91 will be screwed out from the inside of the stopper 6 and then screwed into the inside of the guide rail 3, locking the vertical state of the guide rail 3 and the coring machine 5, and then the circular rod 1015 will be pressed down, and the first friction ring 1016 fixed on the circular rod 1015 will be in close contact with the friction pattern on the upper end of the driving shaft 1012. At the same time, the lower end of the circular rod 1015 will squeeze the slide bar 1022 to slide downward, and the stop friction block 1013 fixed on the end of the slide bar 1022 will slide together, so that a gap is generated between the slide bar 1022 and the base 1. Therefore, after the circular rod 1015 is rotated, the driving shaft 1012 rotates inside the base 1 together, because the first pulley group 88 bypasses the steering shaft 89 to connect the driving shaft 1012 with the connecting shaft 86. After the driving shaft 1012 rotates,The connecting shaft 86 rotates together inside the base 1, and the threaded rod 84 fixed on the lower end surface of the connecting shaft 86 rotates together therewith. The first nut 85 fixed inside the slide 83 is also threadedly connected with the threaded rod 84. The slide 83 is also slidably connected with the fixed cylinder 82 fixed on the bottom surface of the base 1. When the threaded rod 84 rotates, the slide 83 and the bottom plate 81 fixed at the lower end of the slide 83 slide downward together, so that the bottom plate 81 is in close contact with the ground, thereby increasing the contact area and improving the stability of the overall structure. Finally, the circular rod 1015 is loosened, and under the action of the second spring 1021 fixedly connected to the slide rod 1022 and the driving shaft 1012 at both ends, the gap between the stop friction block 1013 and the base 1 is eliminated, so that the friction pattern on the stop friction block 1013 is in close contact with the base 1, limiting the rotation of the structures such as the stop friction block 1013 and the driving shaft 1012, thereby further improving the stability of the overall device.

[0024] When sampling the concrete wall, because the guide rail 3 can rotate on the bracket 2, the guide rail 3 and the coring machine 5 are in a horizontal state, so that the side of the guide rail 3 contacts the top surface of the block seat 6, and then the slider 103 and other structures are pushed up to make the friction pattern of the circular friction block 99 closely contact with the disc shaft 95, and then the circular rod 1015 is pulled up and the circular rod 1015 is rotated. Similarly, under the transmission of the second transmission shaft 1019, the second pulley group 1020, the first transmission shaft 1011, the square long rod 101 and other structures, the disc shaft 95 rotates together inside the block seat 6. Therefore, the bolt 91 in the vertical state in the block seat 6 can be synchronously unscrewed from the inside of the block seat 6 and screwed into the guide rail 3, locking the guide rail 3 and the coring machine 5 in a horizontal state, so as to ensure stable sampling of the concrete wall.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] 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 sampling device for construction engineering quality inspection, characterized in that: include: A base (1), wherein a bracket (2) and a reinforcement seat (7) are respectively fixedly mounted on the upper surface of the base (1), a guide rail (3) is rotatably connected to the bracket (2), a stop seat (6) is fixedly mounted on the upper surface of the reinforcement seat (7), a slide seat (4) is slidably connected to the guide rail (3), a coring machine (5) is fixedly mounted on the slide seat (4), and a moving wheel is also arranged on the bottom surface of the base (1); The block seat (6) is provided with a connecting assembly (9), the connecting assembly (9) comprising an extension shaft (94) rotatably arranged inside the block seat (6), a disc-shaped shaft (95) and a main bevel gear (97), the end surfaces of the extension shaft (94) and the disc-shaped shaft (95) are both fixedly provided with a square short rod (93), the square short rod (93) is slidably provided with a bolt (91), the bolt (91) is threadedly connected with a second nut (92), the second nut (92) is fixedly mounted on the side wall of the inner cavity of the block seat (6), the connecting assembly (9) further comprises a movable shaft (98) movably connected to the block seat (6), a circular friction block (99) is fixedly mounted on the end of the movable shaft (98), a secondary bevel gear (96) is fixedly mounted on the end of the extension shaft (94) away from the square short rod (93), and the secondary bevel gear (96) is also meshingly transmission-connected with the main bevel gear (97); The base (1) is provided with a stabilizing component (8) and an adjusting component (10), respectively. The stabilizing component (8) comprises a fixing cylinder (82) fixedly mounted on the bottom surface of the base (1), and a connecting shaft (86) and a steering shaft (89) rotatably mounted on the base (1). A sliding cylinder (83) is slidably mounted on the fixing cylinder (82). A bottom plate (81) is fixedly mounted on the bottom end of the sliding cylinder (83). A threaded rod (84) is fixedly mounted on the bottom surface of the connecting shaft (86). A first nut (85) threadedly connected to the threaded rod (84) is also fixedly mounted inside the sliding cylinder (83). The stabilizing component (8) further comprises a first pulley group (88) arranged in an internal cavity of the base (1). The adjustment assembly (10) comprises a U-shaped seat (104) fixedly mounted on the top surface of the base (1) and a fixed seat (1014); a slider (103) is slidably arranged inside the U-shaped seat (104); the top surface of the slider (103) is rotatably connected to an auxiliary shaft (102); a rectangular long rod (101) is fixedly mounted on the top surface of the auxiliary shaft (102); a first transmission shaft (1011) slidably connected to the rectangular long rod (101) is rotatably arranged on the top surface of the U-shaped seat (104); a bearing (1018) is arranged inside the fixed seat (1014); and the fixed seat (1014) is rotatably connected to a second transmission shaft (1019) via the bearing (1018); a second pulley set (1020) is arranged on the second transmission shaft (1019); and the first The second transmission shaft (1019) is connected to the first transmission shaft (1011) through a second pulley group (1020); a circular rod (1015) is movably connected to the fixed seat (1014); a first friction ring (1016) and a second friction ring (1017) are respectively fixedly mounted on the circular rod (1015); the adjustment component (10) further comprises a driving shaft (1012) rotatably arranged inside the base (1); a sliding rod (1022) is slidably arranged on the driving shaft (1012); a stop friction block (1013) is fixedly mounted on the end of the sliding rod (1022); a second spring (1021) is fixedly mounted on the bottom surface of the sliding rod (1022); and the lower end of the second spring (1021) is fixedly connected to the driving shaft (1012).

2. A sampling device for construction engineering quality inspection according to claim 1, characterized in that: The square short rod (93) is located at the end of the bolt (91) and is fixedly mounted with a limit block (910); the threaded rod (84) is located at the end of the slide cylinder (83) and is fixedly mounted with a stop block (87).

3. A sampling device for construction engineering quality inspection according to claim 1, characterized in that: The stopper (6) is designed as an L-shaped structure, and both end surfaces of the stopper (6) can contact the side surfaces of the bracket (2).

4. A sampling device for construction engineering quality inspection according to claim 1, characterized in that: The lower end of the movable shaft (98) is fixedly connected to the upper end of the rectangular long rod (101), and the central axis of the auxiliary shaft (102) coincides with the central axis of the movable shaft (98).

5. A sampling device for construction engineering quality inspection according to claim 1, characterized in that: The first pulley set (88) bypasses the steering shaft (89) to achieve a transmission connection relationship between the connecting shaft (86) and the driving shaft (1012).

6. A sampling device for construction engineering quality inspection according to claim 1, characterized in that: The first friction ring (1016) is located above the driving shaft (1012), and a cavity for accommodating the circular rod (1015) is provided on the driving shaft (1012).

7. A sampling device for construction engineering quality inspection according to claim 1, characterized in that: The second friction ring (1017) is located above the first friction ring (1016), and the second friction ring (1017) is located below the second transmission shaft (1019).

8. A sampling device for construction engineering quality inspection according to claim 1, characterized in that: An insert block (105) is slidably arranged on the slider (103), a connecting plate (107) is fixedly installed inside the slider (103), a first spring (106) is fixedly installed on the side of the insert block (105), an end of the first spring (106) away from the insert block (105) is fixedly connected to the connecting plate (107), and the insert block (105) is also plugged into the U-shaped seat (104).

9. A sampling device for construction engineering quality inspection according to claim 8, characterized in that: A circular shaft (109) is rotatably provided on the slider (103); a connecting rod (108) is movably connected to the outer surface of the circular shaft (109); an end of the connecting rod (108) away from the circular shaft (109) is movably connected to the insert block (105); and a knob (1010) is fixedly installed on the end of the circular shaft (109) that passes through the slider (103).

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