A strength detection device for a building structure

Abstract

The present invention relates to the technical field of detection devices, and specifically relates to a strength detection device for building structures, which includes a housing, a striker rod, a guide rod, a heavy hammer, and a guide plate. One end of the guide rod is connected to the striker rod, and the other end passes through the heavy hammer and is fixedly connected to the guide plate. A guiding slideway is arranged inside the housing, and the guiding slideway includes a first sliding section, a second sliding section, and a third sliding section. A guiding column is arranged on the guide plate, and in the initial state, the guiding column is slidably installed in the first sliding section. A pointer slider is arranged inside the housing. In the process of the heavy hammer storing energy in the first direction away from the wall surface, the heavy hammer can pass by the pointer slider without contacting the pointer slider, avoiding accidental touch. Moreover, in the process of the guiding column driving the guide rod to slide in the third sliding section, the third sliding section plays a buffering role in the sliding of the guide rod, weakening the shaking of the guide rod after stopping sliding, and improving the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and particularly to a strength detection device for building structures. Background Art

[0002] Concrete is one of the important materials in the construction industry, and its compressive strength has a direct impact on building safety. Common methods for detecting the compressive strength of concrete include the rebound method, the ultrasonic-rebound combined method, the core-drilling method, and the pull-out method. Among them, the rebound method and the ultrasonic-rebound combined method are non-destructive tests that can reflect the hardness of the concrete wall surface. The core-drilling method and the pull-out method belong to local destructive tests and will cause certain damage to the structure.

[0003] The rebound method for detecting the compressive strength of concrete is widely used in concrete strength detection. It is simple, fast, and low-cost. The rebound hammer is a commonly used device for detecting the strength of concrete walls. Its detection mainly includes a charging stage, a release stage, and a rebound stage. In the charging stage, the impact rod uses a spring to drive the heavy hammer. In the release stage, the heavy hammer impacts the impact rod that is in perpendicular contact with the concrete surface with a constant kinetic energy, causing local concrete to deform and absorb a part of the energy, while the other part of the energy is converted into the rebound kinetic energy of the heavy hammer. In the rebound stage, the rebound kinetic energy is converted into potential energy, and the heavy hammer rebounds to the maximum distance. The instrument displays the maximum rebound distance of the heavy hammer in the form of a rebound value.

[0004] However, during the charging process of the heavy hammer, in order to prevent the heavy hammer from accidentally hitting the pointer slider during charging, the guide rod needs to move from an offset state to a coaxial state within the housing and drive the heavy hammer to offset synchronously to avoid the pointer slider. However, since different personnel press the impact rod at different speeds during detection, during the sliding process of the guide rod, there may be a certain deviation between the movement direction of the heavy hammer and the axis of the rebound hammer, causing the guide rod to still shake after stopping sliding, increasing the friction between the heavy hammer and the guide rod, and reducing the detection accuracy. Summary of the Invention

[0005] The present invention provides a strength detection device for building structures to solve the problem that in the existing rebound hammer, during the charging of the heavy hammer and during the sliding process of the guide rod, there may be a certain deviation between the movement direction of the heavy hammer and the axis of the rebound hammer, causing the guide rod to still shake after stopping sliding, increasing the friction between the heavy hammer and the guide rod, and reducing the detection accuracy.

[0006] The strength detection device for a building structure of the present invention adopts the following technical solution: A strength detection device for a building structure, used to detect a wall surface, includes a housing, a percussion rod, a guide rod, a weight, and a guide plate; the housing is arranged along a first direction, the first direction is perpendicular to the wall surface, and the percussion rod is slidably installed in the housing along the first direction; the weight and the guide plate are sequentially arranged in the housing along the first direction, the weight is located on the side of the guide plate closer to the wall surface in the first direction, and when the guide plate moves away from the wall surface along the first direction, the weight can move synchronously with the guide plate; the guide rod is arranged along the first direction, one end of the guide rod is connected to the percussion rod, and the other end passes through the weight and is fixedly connected to the guide plate; a pointer slider is arranged in the housing, and the pointer slider is arranged side by side with the guide rod in a second direction, the second direction is perpendicular to the first direction; a guiding slideway is arranged in the housing, the guide rod and the guiding slideway are sequentially arranged in a third direction, the third direction is perpendicular to the first direction and the second direction respectively; the guiding slideway includes a first sliding section, a second sliding section, and a third sliding section, both the first sliding section and the third sliding section are arranged along the first direction, the second sliding section is inclined and connects the first sliding section and the third sliding section, and a first edge is arranged at one end of the first sliding section away from the wall surface along the first direction, and the first edge is used to limit the guiding column from moving away from the wall surface along the first direction in the first sliding section; a guiding column is arranged on the guide plate, and in the initial state, the guiding column is slidably installed in the first sliding section, and at this time, the weight does not contact the pointer slider when passing through the pointer slider; when the guiding column slides in the third sliding section, the weight can contact the pointer slider when passing through the pointer slider.

[0007] Further, when the guiding column moves away from the wall surface along the first direction, the sliding distance of the guiding column in the first sliding section is less than the sliding distance of the guiding column in the third sliding section.

[0008] Further, the housing and the weight are connected by a first elastic member, and the first elastic member is arranged along the first direction; the guide plate is installed in the housing through a second elastic member, and the second elastic member is arranged along the first direction.

[0009] Further, a pointer rod is arranged in the housing, and the pointer rod is arranged along the first direction; the pointer rod is arranged side by side with the guide rod in the second direction, the pointer slider is slidably installed on the pointer rod, and an elastic piece is arranged on the pointer slider, the elastic piece is inclined and elastic, the elastic piece has a first end and a second end, the first end is located on the side of the second end away from the wall surface along the first direction, and the first end is located on the side of the second end closer to the central axis of the pointer slider in the first direction along the second direction.

[0010] Further, a ratchet rack is arranged inside the outer shell. The ratchet rack is arranged along the first direction, and the ratchet rack and the guiding slideway are arranged in parallel inside the outer shell along the second direction. A first push rod, a second push rod and an adjusting member are slidably arranged on the weight. Both the first push rod and the second push rod are arranged along the first direction, and the first push rod is located on the side of the second push rod closer to the wall surface in the first direction. The adjusting member is arranged along the third direction and is located between the first push rod and the second push rod. A one-way tooth is arranged on the adjusting member, and the one-way tooth can be telescopic. After the one-way tooth meshes with the ratchet rack, the adjusting member can only move along the first direction to the side away from the wall surface, and the movement of the adjusting member along the first direction towards the side close to the wall surface is restricted. When the first push rod and the second push rod move away from each other in the first direction, the adjusting member can move along the third direction to the side away from the ratchet rack, so that the ratchet rack and the one-way tooth are disengaged. When the first push rod and the second push rod move closer to each other in the first direction, the adjusting member can move along the third direction to the side close to the ratchet rack, so that the ratchet rack and the one-way tooth are engaged. And when the guide disc moves along the first direction to the side away from the wall surface, the first push rod and the second push rod can move away from each other in the first direction.

[0011] Further, a first slideway and a second slideway are formed on the weight. The first slideway penetrates the weight along the first direction, and both the first push rod and the second push rod are slidably installed in the first slideway. The second slideway is arranged along the third direction. One end of the second slideway is communicated with the first slideway, and the other end penetrates the weight along the third direction.

[0012] Further, the adjusting member includes an adjusting block and an adjusting rod. The adjusting block and the adjusting rod are arranged in sequence and fixedly connected in the third direction. The adjusting block is of a trapezoidal structure, and the one-way tooth is installed on the adjusting rod. A first wedge surface is arranged on the first push rod, and a second wedge surface is arranged on the second push rod. The first wedge surface and the second wedge surface are arranged face to face in the first direction. A wedge-shaped groove for cooperating with the first wedge surface and the second wedge surface is arranged on the adjusting block.

[0013] Further, a hook is arranged on the guide disc. The hook is rotatably arranged relative to the guide disc around the third direction. A convex platform is arranged on the weight. The convex platform is located on the side of the weight away from the wall surface along the first direction. A hanging rod is arranged at one end of the second push rod away from the wall surface along the first direction. A sliding groove is formed on the convex platform, and the hanging rod is slidably installed in the sliding groove. In the initial state, the hook is clamped with the hanging rod.

[0014] Further, a driving block is arranged inside the outer shell. The driving block is located on the side of the hook away from the weight in the first direction. When the hook moves along the first direction to the side away from the wall surface, the hook can abut against the driving block. After the hook abuts against the driving block, the driving block can prompt the hook to rotate around the third direction and disengage the hook from the hanging rod.

[0015] Furthermore, a spring telescopic rod is fixedly arranged on the guide plate. The spring telescopic rod is arranged along the first direction and is located on the side of the guide plate close to the wall in the first direction. In the initial state, the spring telescopic rod abuts against the pointer slider, and the spring telescopic rod is in a compressed state; a plurality of guiding chutes are arranged, and the plurality of guiding chutes are arranged in sequence along the first direction in the housing and are communicated with each other; a second edge is arranged at one end of the third sliding section close to the wall along the first direction, and the second edge is used to limit the guiding column from moving towards the side close to the wall along the first direction in the third sliding section.

[0016] The beneficial effects of the present invention are as follows: A strength detection device for a building structure of the present invention is provided with a housing, a striking rod, a guide rod, a heavy hammer and a guide plate in cooperation. During the energy storage stage, after the guiding column comes to the third sliding section from the first sliding section through the second sliding section, the guide rod will also move from the offset state to the coaxial state, ensuring that during the process of the heavy hammer storing energy along the first direction away from the wall, the heavy hammer can pass by the pointer slider without contacting the pointer slider, avoiding accidental touch. And during the process of the guiding column driving the guide rod to slide in the third sliding section, the third sliding section plays a buffering role in the sliding of the guide rod, weakening the shaking of the guide rod after stopping sliding, reducing the friction between the heavy hammer and the guide rod, and improving the detection accuracy. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a strength detection device for a building structure of the present invention;

[0019] Figure 2 It is a state diagram of the heavy hammer pushing the pointer slider to rebound in an embodiment of a strength detection device for a building structure of the present invention;

[0020] Figure 3 It is a front view of the overall structure of an embodiment of a strength detection device for a building structure of the present invention;

[0021] Figure 4 is Figure 3 a cross-sectional view along A-A in

[0022] Figure 5 is Figure 4 a cross-sectional view along B-B in

[0023] Figure 6 is Figure 5 an enlarged view at C in

[0024] Figure 7 Schematic diagram of the guiding slideway and ratchet rack inside the housing of an embodiment of a strength detection device for a building structure according to the present invention;

[0025] Figure 8 is Figure 7 the enlarged view at D in

[0026] Figure 9 Schematic diagram of the guiding slideway and ratchet rack inside the housing of an embodiment of a strength detection device for a building structure according to the present invention from another perspective;

[0027] Figure 10 is Figure 9 the enlarged view at E in

[0028] Figure 11 State diagram of the heavy hammer after energy storage during the next detection after the first detection of an embodiment of a strength detection device for a building structure according to the present invention.

[0029] In the figure: 100, housing; 101, impact rod; 102, guide rod; 103, heavy hammer; 104, guide disc; 105, guide post; 106, pointer slider; 107, first elastic member; 108, second elastic member; 109, buffer spring; 110, pointer rod; 111, elastic sheet; 112, hook; 113, convex platform; 114, drive block; 115, ratchet rack; 116, first push rod; 117, second push rod; 118, adjusting member; 119, one-way tooth; 120, hanging rod; 121, spring telescopic rod; 200, guiding slideway; 210, first sliding section; 211, first edge; 220, second sliding section; 230, third sliding section; 231, second edge; 240, synchronous sliding section. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] An embodiment of a strength detection device for a building structure according to the present invention is as Figures 1 to 11 shown.

[0032] A strength detection device for a building structure, which is used to detect the concrete wall surface in the building structure (hereinafter simply referred to as the wall surface), includes a housing 100, a striker 101, a guide rod 102, a weight 103 and a guide plate 104. The housing 100 is arranged along a first direction, the first direction is perpendicular to the wall surface, the striker 101 is arranged along the first direction and is coaxial with the housing 100. One end of the striker 101 is installed in the housing 100, and the other end extends out of the housing 100 and faces the wall surface. The striker 101 is slidably installed in the housing 100 along the first direction.

[0033] The weight 103 and the guide plate 104 are sequentially arranged in the housing 100 along the first direction. The weight 103 is located on the side of the guide plate 104 closer to the wall surface in the first direction, and when the guide plate 104 moves away from the wall surface along the first direction, the weight 103 can move synchronously with the guide plate 104. The guide rod 102 is arranged along the first direction. One end of the guide rod 102 along the first direction is connected to the striker 101, and the other end along the first direction passes through the weight 103 and is fixedly connected to the guide plate 104.

[0034] A pointer slider 106 is arranged in the housing 100. The pointer slider 106 is arranged side by side with the guide rod 102 in a second direction, and the second direction is perpendicular to the first direction. A guiding slideway 200 is arranged in the housing 100. The guide rod 102 and the guiding slideway 200 are sequentially arranged in a third direction, and the third direction is perpendicular to the first direction and the second direction respectively. The guiding slideway 200 includes a first sliding section 210, a second sliding section 220 and a third sliding section 230. Both the first sliding section 210 and the third sliding section 230 are arranged along the first direction. The second sliding section 220 is inclined and connects the first sliding section 210 and the third sliding section 230. The third sliding section 230 is located on the side of the first sliding section 210 closer to the pointer slider 106 in the second direction. And a first edge 211 is arranged at the end of the first sliding section 210 along the first direction away from the wall surface. The first edge 211 is used to limit the guiding column 105 from moving away from the wall surface along the first direction in the first sliding section 210, and allows the guiding column 105 to move towards the wall surface along the first direction in the first sliding section 210.

[0035] A guiding column 105 is arranged on the guide plate 104. In the initial state, the guiding column 105 is slidably installed in the first sliding section 210, and when the guiding column 105 slides in the first sliding section 210, the weight 103 does not contact the pointer slider 106 when passing by the pointer slider 106. When the guiding column 105 slides in the third sliding section 230, the weight 103 can contact the pointer slider 106 when passing by the pointer slider 106.

[0036] In this embodiment, a shell 100, a striking rod 101, a guide rod 102, a weight 103 and a guide plate 104 are arranged to cooperate with each other. In the power accumulation stage, the operator holds the shell 100 and makes the striking rod 101 contact vertically with the wall, and then pushes the shell 100 to move along a first direction toward the side close to the wall, so that the striking rod 101 slides and retracts into the shell 100 along the first direction. The movement of the striking rod 101 will drive the guide rod 102 to move along the first direction away from the wall. At this time, the guide rod 102 will drive the weight 103 to move synchronously through the guide plate 104, so that the guide column 105 on the guide plate 104 slides in the first sliding section 210.

[0037] When the guide post 105 slides in the first slide section 210, the guide post 105 will drive the guide plate 104 to produce an axial offset, and the guide plate 104 will drive the guide rod 102 to deflect, and the deflection of the guide rod 102 will cause the weight 103 to move in the second direction to the side away from the pointer slider 106, so that the weight 103 will not contact the pointer slider 106 when passing through the pointer slider 106. When the guide post 105 slides to the first edge 211 in the first slide section 210, the first edge 211 will block the movement of the guide post 105 and cause the guide post 105 to slide from the first slide section 210 to the second slide section 220, that is, the guide post 105 moves in the second direction to the side close to the pointer rod 110, and the guide post 105 will drive the guide plate 104 to move, and drive the guide rod 102 to move through the guide plate 104. After the guide column 105 moves from the second sliding section 220 to the third sliding section 230, the guide rod 102 moves from the offset state to the coaxial state. The movement of the guide rod 102 will prompt the weight 103 to move in the second direction toward the side close to the pointer slider 106. In the process of the guide column 105 sliding along the third sliding section 230, if the weight 103 passes through the pointer slider 106 along the first direction, the weight 103 will contact the pointer slider 106.

[0038] That is, in the force accumulation stage, after the guide column 105 moves from the first slide section 210 to the third slide section 230 via the second slide section 220, the guide rod 102 will also move from the offset state to the coaxial state, ensuring that when the weight 103 accumulates force along the first direction toward the side away from the wall, the weight 103 can pass through the pointer slider 106 without contacting the pointer slider 106, thereby avoiding accidental contact. In addition, when the guide column 105 drives the guide rod 102 to slide in the third slide section 230, the third slide section 230 acts as a buffer for the sliding of the guide rod 102, weakening the shaking of the guide rod 102 after it stops sliding, reducing the friction between the weight 103 and the guide rod 102, and improving the accuracy of detection.

[0039] Furthermore, when the guide column 105 moves along the first direction toward the side away from the wall, the sliding distance of the guide column 105 in the first sliding section 210 is smaller than the sliding distance of the sliding guide column 105 in the third sliding section 230 .

[0040] This setting enables the guide post 105 to provide sufficient buffering time for the guide rod 102 during the sliding process within the third sliding section 230.

[0041] In a further embodiment, the housing 100 is connected to the weight 103 through a first elastic member 107. The first elastic member 107 is arranged along the first direction and is a spring. The guide disc 104 is installed in the housing 100 through a second elastic member 108. The second elastic member 108 is arranged along the first direction. The second elastic member 108 is a spring.

[0042] Specifically, one end of the guide rod 102 along the first direction is connected to the striker rod 101 through a buffer spring 109. The buffer spring 109 is arranged along the first direction.

[0043] In a further embodiment, a pointer rod 110 is arranged inside the housing 100. The pointer rod 110 is arranged along the first direction. The pointer rod 110 and the guide rod 102 are arranged side by side in the second direction. The pointer slider 106 is slidably installed on the pointer rod 110. A spring piece 111 is arranged on the pointer slider 106. The spring piece 111 is inclined and elastic. The spring piece 111 has a first end and a second end. The first end is located on the side of the second end far from the wall surface along the first direction, and the first end is located on the side of the second end close to the central axis of the pointer slider 106 in the first direction along the second direction.

[0044] The two ends of the pointer rod 110 along the first direction are respectively referred to as the head end and the tail end. The head end is located on the side of the tail end close to the wall surface in the first direction. In the initial state, the pointer slider 106 is located on the side of the head end of the pointer rod 110, and at this time, the weight 103 is located on the side of the pointer slider 106 close to the wall surface in the first direction.

[0045] That is, in the energy storage stage, at this time, the guide post 105 slides along the first direction away from the wall surface within the first sliding section 210. When passing by the pointer slider 106, the weight 103 will not contact the pointer slider 106, and after passing through the first sliding section 210, the guide post 105 will slide from the second sliding section 220 to the third sliding section 230 until the weight 103 completes energy storage. In the release stage, when the weight 103 impacts along the first direction towards the wall surface, even if the weight 103 passes by the spring piece 111, due to the fact that the first end of the spring piece 111 is located on the side of the second end far from the wall surface along the first direction and the first end is located on the side of the second end close to the central axis of the pointer slider 106 in the first direction along the second direction, the spring piece 111 will not hinder the weight 103 from passing. After the weight 103 completes the strike, in the rebound stage, the weight 103 rebounds along the first direction away from the wall surface. At this time, the weight 103 will drive the pointer slider 106 to move through the spring piece 111, read the value and complete the detection.

[0046] In a further embodiment, a ratchet rack 115 is disposed inside the housing 100. The ratchet rack 115 is disposed along a first direction, and the ratchet rack 115 and the guiding slideway 200 are disposed side by side inside the housing 100 along a second direction. A first push rod 116, a second push rod 117, and an adjusting member 118 are slidably disposed on the plumb bob 103. Both the first push rod 116 and the second push rod 117 are disposed along the first direction, and the first push rod 116 is located on the side of the second push rod 117 closer to the wall surface in the first direction. The adjusting member 118 is disposed along a third direction and is located between the first push rod 116 and the second push rod 117, and a one-way tooth 119 is disposed on the adjusting member 118. The one-way tooth 119 can be telescopic. After the one-way tooth 119 meshes with the ratchet rack 115, the adjusting member 118 can only move along the first direction to the side away from the wall surface, and the movement of the adjusting member 118 along the first direction to the side closer to the wall surface is restricted. Moreover, when the first push rod 116 and the second push rod 117 move away from each other in the first direction, the adjusting member 118 can move along the third direction to the side away from the ratchet rack 115, so that the ratchet rack 115 and the one-way tooth 119 are disengaged; when the first push rod 116 and the second push rod 117 move closer to each other in the first direction, the adjusting member 118 can move along the third direction to the side closer to the ratchet rack 115, so that the ratchet rack 115 and the one-way tooth 119 are engaged. Moreover, when the guide disk 104 moves along the first direction to the side away from the wall surface, the first push rod 116 and the second push rod 117 can move away from each other in the first direction.

[0047] Specifically, a first slideway and a second slideway are formed on the plumb bob 103. The first slideway penetrates the plumb bob 103 along the first direction. Both the first push rod 116 and the second push rod 117 are slidably installed in the first slideway, and both the first push rod 116 and the second push rod 117 are in contact with the inner wall surface of the first slideway. The second slideway is disposed along the third direction. One end of the second slideway communicates with the first slideway, and the other end penetrates the plumb bob 103 along the third direction.

[0048] The adjusting member 118 includes an adjusting block and an adjusting rod. The adjusting block and the adjusting rod are sequentially arranged and fixedly connected in the third direction. The adjusting block and the adjusting rod are of an integrally formed structure. The adjusting block is of a trapezoidal structure. Both the adjusting block and the adjusting rod are in contact with the inner wall surface of the second slideway. The one-way tooth 119 is installed on the adjusting rod. A first wedge surface is provided on the first push rod 116, and a second wedge surface is provided on the second push rod 117. The first wedge surface and the second wedge surface are arranged face to face in the first direction. A wedge groove for cooperating with the first wedge surface and the second wedge surface is provided on the adjusting block. Thus, when the first push rod 116 and the second push rod 117 move away from each other in the first direction, the adjusting member 118 can move along the third direction to the side away from the ratchet rack 115, so that the ratchet rack 115 and the one-way tooth 119 are disengaged; when the first push rod 116 and the second push rod 117 move closer to each other in the first direction, the adjusting member 118 can move along the third direction to the side close to the ratchet rack 115, so that the ratchet rack 115 and the one-way tooth 119 are engaged.

[0049] In a further embodiment, a hook 112 is provided on the guide disc 104. The hook 112 is rotatably arranged relative to the guide disc 104 around the third direction. A boss 113 is provided on the plumb bob 103. The boss 113 is located on the side of the plumb bob 103 away from the wall surface in the first direction. A hanging rod 120 is provided at one end of the second push rod 117 away from the wall surface in the first direction. The hanging rod 120 and the second push rod 117 are of an integrally formed structure, that is, the second push rod 117 and the hanging rod 120 form an L-shaped structure. A chute is formed on the boss 113, and the hanging rod 120 is slidably installed in the chute. In the initial state, the hook 112 is engaged with the hanging rod 120.

[0050] Specifically, the hook 112 has a first inclined surface, and the boss 113 is provided with a second inclined surface. When the guide disc 104 moves relative to the plumb bob 103 along the first direction to the side close to the wall surface under the action of the second elastic member 108, the first inclined surface on the hook 112 can move along the second inclined surface on the boss 113 and engage with the hanging rod 120 after passing the hanging rod 120. It should be particularly noted that at this time, the hanging rod 120 and the hook 112 are only hung together, and the hook 112 does not apply a force to the hanging rod 120 to move away from the wall surface in the first direction. Therefore, the hanging rod 120 will not move in the chute in the first direction.

[0051] In a further embodiment, a driving block 114 is provided in the housing 100. The driving block 114 is located on the side of the hook 112 away from the plumb bob 103 in the first direction, and the hook 112 can abut against the driving block 114 when moving away from the wall surface in the first direction. After the hook 112 abuts against the driving block 114, the driving block 114 can cause the hook 112 to rotate around the third direction and disengage the hook 112 from the protruding hanging rod 120.

[0052] During the energy storage phase, the striker rod 101 retracts into the housing 100 along the first direction. The movement of the striker rod 101 will drive the guide rod 102 to move along the first direction away from the wall side. The movement of the guide rod 102 will cause the guide plate 104 to move. Since the guide plate 104 and the hanging rod 120 are hooked together in the initial state, under the pushing action of the guide rod 102, the hook 112 on the guide plate 104 will give the hanging rod 120 a force to move along the first direction away from the wall side, causing the hanging rod 120 to pull the second push rod 117 to move. The second push rod 117 will move away from the first push rod 116 in the first slideway and extend outside the weight 103. The movement of the second push rod 117 will cause the adjusting block to move in the third direction away from the ratchet rack 115, and through the adjusting block, the first push rod 116 will move along the first direction towards the wall side, that is, the first push rod 116 and the second push rod 117 move away from each other in the first direction, causing the first push rod 116 to extend outside the weight 103. And the adjusting block drives the adjusting rod to move in the third direction, so that the one-way tooth 119 disengages from the ratchet rack 115. When the weight 103 stores energy, at this time, the guide post 105 slides along the first direction away from the wall side in the first sliding section 210, and the one-way tooth 119 does not engage with the ratchet rack 115.

[0053] And when the hanging rod 120 moves to the extreme position in the chute, that is, the hanging rod 120 moves from one end of the chute to the other end. As the guide plate 104 continues to move, the weight 103 can move synchronously with the guide plate 104, stretching the first elastic member 107 and compressing the second elastic member 108.

[0054] During the release phase, when the hook 112 moves to abut against the driving block 114, the hook 112 will disengage from the boss 113, and then the weight 103 will move along the first direction towards the wall side under the action of the first elastic member 107. And at this time, the wall will restrict the actions of the guide plate 104, the guide rod 102 and the striker rod 101.

[0055] After the plumb bob 103 impacts towards the side close to the wall surface in the first direction and causes the first push rod 116 to move to contact the impact rod 101, the first push rod 116 will move towards the side close to the second push rod 117 in the first direction under the action of the impact rod 101 and retract into the plumb bob 103. The movement of the first push rod 116 will prompt the adjusting block to move towards the side close to the ratchet rack 115 in the third direction, and through the adjusting block, prompt the second push rod 117 to move towards the side close to the wall surface in the first direction. That is, the first push rod 116 and the second push rod 117 approach each other in the first direction, causing the second push rod 117 to retract into the plumb bob 103. And the adjusting block drives the adjusting rod to move in the third direction, causing the one-way tooth 119 to engage with the ratchet rack 115, restricting the plumb bob 103 from moving towards the side close to the wall surface in the first direction. After the plumb bob 103 finishes impacting, the plumb bob 103 rebounds towards the side away from the wall surface in the first direction. At this time, the plumb bob 103 will drive the pointer slider 106 to move through the elastic piece 111, take a reading and complete the detection.

[0056] In a further embodiment, a spring telescopic rod 121 is fixedly arranged on the guide disc 104. The spring telescopic rod 121 is arranged along the first direction and is located on the side of the guide disc 104 close to the wall surface in the first direction. In the initial state, the spring telescopic rod 121 abuts against the pointer slider 106, and the spring telescopic rod 121 is in a compressed state.

[0057] A plurality of guiding chutes 200 are provided. The plurality of guiding chutes 200 are sequentially arranged along the first direction in the housing 100 and are interconnected. The second edge 231 is provided at one end of the third sliding section 230 close to the wall surface in the first direction. The second edge 231 is used to restrict the guiding post 105 from moving towards the side close to the wall surface in the first direction within the third sliding section 230 and allows the guiding post 105 to move towards the side away from the wall surface in the first direction within the third sliding section 230.

[0058] Or, a second edge 231 is provided on the third sliding section 230 of a guiding chute 200 far from the wall surface in the first direction. The second edge 231 is located at one end of the third sliding section 230 close to the wall surface in the first direction.

[0059] In this embodiment, by providing a plurality of guiding chutes 200, after one detection is completed, the operator moves the strength detection device of the building structure to another position. When the impact rod 101 disengages from the wall surface, the second elastic member 108 will cause the guide disc 104 to reset, so that the guide disc 104 moves along the first direction towards the side close to the wall surface, and the hook 112 will hang the hanging rod 120 again. During this process, the guiding post 105 on the guide disc 104 will also move along the first direction towards the side close to the wall surface within the third sliding section 230, and when passing the second edge 231, the second edge 231 will block the movement of the guiding post 105 and cause the guiding post 105 to slide from the third sliding section 230 to the second sliding section 220, so that the guiding post 105 returns to the first sliding section 210 (this first sliding section 210 corresponds to the first sliding section 210 of the guiding chute 200 on the side far from the wall surface in the first direction), and drives the guide disc 104 to act synchronously, so that the guide rod 102 returns to the offset state, and as the guide disc 104 moves, the guiding post 105 continues to slide along the first sliding section 210 of the plurality of guiding chutes 200 and gradually approaches the wall surface.

[0060] Moreover, the movement of the guide disc 104 will cause the spring telescopic rod 121 to move synchronously, so that the spring telescopic rod 121 pushes the pointer slider 106, and further causes the pointer slider 106 to move along the first direction towards the side close to the wall surface and reset on the pointer rod 110. At this time, the weight 103 will also be driven by the guide rod 102 through the guide disc 104 to return to the offset state, and move in the reverse direction to make way for the movement of the pointer slider 106, so that the pointer slider 106 can cross over the weight 103 and be located on the side of the weight 103 close to the wall surface in the first direction. And the length of the spring telescopic rod 121 is limited. After the weight 103 is locked by the one-way tooth 119 and the ratchet rack 115, the pointer slider 106 cannot be reset to the initial position again, and at this time the first elastic member 107 is in a state of storing energy, and the impact rod 101 is not fully extended. That is, at this time, it can be considered that the weight 103 is in the process of storing energy.

[0061] This setting is because when detecting the walls of the same batch, the strength of the walls should be within a certain range. Therefore, without resetting the weight 103 and the pointer slider 106 to the initial position, when performing the next detection, the displacement of the pointer slider 106 sliding on the pointer rod 110 can be reduced, the friction between the pointer slider 106 and the pointer rod 110 can be reduced to a certain extent, and the detection error can be reduced. Moreover, when storing energy during the next detection, the stroke of the weight 103 moving along the first direction towards the side far from the wall surface to store energy is shortened, the physical strength consumption of the operator is reduced, and at the same time the detection speed is increased and the detection efficiency is improved.

[0062] In a further embodiment, a synchronous sliding section 240 is provided on the outer shell 100. The synchronous sliding section 240 is arranged along the first direction and communicates with the first sliding section 210 of the guiding slideway 200 on the side close to the wall surface in the first direction. In the initial state, the guiding column 105 is slidably installed in the synchronous sliding section 240.

[0063] By providing the synchronous sliding section 240, during the first detection, the guiding column 105 is slidably installed in the synchronous sliding section 240, so that when the weight 103 passes through the pointer slider 106 during the energy storage stage, there is enough avoidance stroke.

[0064] In a further embodiment, the one-way gear 119 is located on the side of the ratchet rack 115 close to the wall surface in the first direction in the initial state.

[0065] By making the one-way gear 119 located on the side of the ratchet rack 115 close to the wall surface in the first direction in the initial state, when the weight 103 finishes the impact and rebounds along the first direction away from the wall surface, the one-way gear 119 will first slide empty for a section and then engage with the ratchet rack 115.

[0066] That is, when the strength of the object to be detected is small enough, the one-way gear 119 will not engage with the ratchet rack 115 during the rebound. After the wall surface detection is completed, when it is necessary to reset the entire building structure strength detection device, the impact rod 101 is abutted against the sponge or a substance with a small enough strength. In this way, when the weight 103 finishes the impact and rebounds along the first direction away from the wall surface, the one-way gear 119 will not be able to engage with the ratchet rack 115, the weight 103 will reset after the rebound, and the pointer slider 106 will reset under the action of the spring telescopic rod 121.

[0067] Combined with the above embodiments, the specific working process is as follows:

[0068] During the energy storage stage, the operator holds the housing 100 and makes the impact rod 101 contact the wall perpendicularly. Then, the operator pushes the housing 100 to move along the first direction towards the side close to the wall, causing the impact rod 101 to slide and retract into the housing 100 along the first direction. The movement of the impact rod 101 will drive the guide rod 102 to move along the first direction away from the wall side. The movement of the guide rod 102 will prompt the guide plate 104 to move. Since the guide plate 104 and the hanging rod 120 are hooked together in the initial state, under the action of the guide rod 102, the hook 112 on the guide plate 104 will give the hanging rod 120 a force to move along the first direction away from the wall side, causing the hanging rod 120 to pull the second push rod 117 to move. The second push rod 117 will move towards the side away from the first push rod 116 in the first slideway and extend out of the weight 103. The movement of the second push rod 117 will prompt the adjusting block to move along the third direction towards the side away from the ratchet rack 115, and through the adjusting block, the first push rod 116 will move along the first direction towards the side close to the wall, that is, the first push rod 116 and the second push rod 117 move away from each other in the first direction, causing the first push rod 116 to extend out of the weight 103. And the adjusting block drives the adjusting rod to move along the third direction, causing the one-way tooth 119 to disengage from the ratchet rack 115.

[0069] And when the hanging rod 120 moves to the limit position in the chute, that is, the hanging rod 120 moves from one end of the chute to the other end. As the guide plate 104 continues to move, the weight 103 can move synchronously with the guide plate 104, stretching the first elastic member 107 and compressing the second elastic member 108.

[0070] During this process, the guide post 105 on the guide plate 104 slides in the first sliding section 210. When the guide post 105 slides in the first sliding section 210, the guide post 105 will drive the guide plate 104 to produce an axial offset, and through the guide plate 104, the guide rod 102 will be offset. The offset of the guide rod 102 will prompt the weight 103 to move along the second direction towards the side away from the pointer slider 106, so that the weight 103 will not contact the pointer slider 106 when passing through the pointer slider 106 at this time. When the guide post 105 slides to the first edge 211 in the first sliding section 210, the first edge 211 will block the movement of the guide post 105 and prompt the guide post 105 to slide from the first sliding section 210 to the second sliding section 220, that is, the guide post 105 moves along the second direction towards the side close to the pointer rod 110. The guide post 105 will drive the guide plate 104 to move, and through the guide plate 104, the guide rod 102 will be driven to move. And after the guide post 105 comes from the second sliding section 220 to the third sliding section 230, the guide rod 102 moves from the offset state to the coaxial state until the weight 103 completes the energy storage.

[0071] That is to say, during the energy storage stage, after the guiding column 105 moves from the first sliding section 210 through the second sliding section 220 to the third sliding section 230, the guide rod 102 will also move from the offset state to the coaxial state, ensuring that during the process of the weight 103 storing energy in the first direction away from the wall surface, the weight 103 can pass by the pointer slider 106 without contacting it, thus avoiding accidental contact. And during this process, the one-way gear 119 will not restrict the movement of the weight 103.

[0072] During the release stage, when the hook 112 moves to abut against the driving block 114, the hook 112 will disengage from the boss 113, and then the weight 103 will move in the first direction towards the wall surface under the action of the first elastic member 107. At this time, the wall surface will restrict the actions of the guide plate 104, the guide rod 102 and the impact rod 101, and restrict the reset of the second elastic member 108.

[0073] When the weight 103 impacts in the first direction towards the wall surface, even if the weight 103 passes by the elastic piece 111, since the first end of the elastic piece 111 is located on the side of the second end away from the wall surface in the first direction, and the first end is located on the side of the second end close to the central axis of the pointer slider 106 in the second direction, the elastic piece 111 will not hinder the weight 103 from passing. After the weight 103 impacts in the first direction towards the wall surface and the first push rod 116 moves to contact the impact rod 101, the first push rod 116 will move in the first direction towards the side close to the second push rod 117 under the action of the impact rod 101 and retract into the weight 103. The movement of the first push rod 116 will cause the adjusting block to move in the third direction towards the side close to the ratchet rack 115, and through the adjusting block, the second push rod 117 will move in the first direction towards the side close to the wall surface, that is, the first push rod 116 and the second push rod 117 approach each other in the first direction, causing the second push rod 117 to retract into the weight 103. And the adjusting block drives the adjusting rod to move in the third direction, making the one-way gear 119 engage with the ratchet rack 115, restricting the weight 103 from moving in the first direction towards the wall surface.

[0074] That is to say, after the release stage, the position of the weight 103 is temporarily locked by the one-way gear 119 and the ratchet rack 115, and the weight 103 cannot move in the first direction towards the wall surface, but can move in the first direction away from the wall surface.

[0075] During the rebound stage, the weight 103 rebounds in the first direction away from the wall surface. At this time, the weight 103 will drive the pointer slider 106 to move through the elastic piece 111, read the value and complete the detection, and the weight 103 will also be temporarily fixed at the reading position.

[0076] After one detection is completed, the operator moves the strength detection device of the building structure to another position. After the impact rod 101 disengages from the wall surface, the second elastic member 108 will cause the guide plate 104 to reset, making the guide plate 104 move along the first direction towards the side close to the wall surface, so that the hook 112 hooks the hanging rod 120 again. During this process, the guide post 105 on the guide plate 104 will also move along the first direction towards the side close to the wall surface within the third sliding section 230. When passing through the second edge 231, the second edge 231 will block the movement of the guide post 105 and cause the guide post 105 to slide from the third sliding section 230 to the second sliding section 220, making the guide post 105 return to the first sliding section 210 and driving the guide plate 104 to move synchronously, so that the guide rod 102 returns to the offset state. And as the guide plate 104 moves, the guide post 105 continues to slide along the first sliding section 210 of the plurality of guiding chutes 200, gradually approaching the wall surface.

[0077] Moreover, the movement of the guide plate 104 will cause the spring telescopic rod 121 to move synchronously, making the spring telescopic rod 121 push the pointer slider 106. As a result, the pointer slider 106 moves along the first direction towards the side close to the wall surface and resets on the pointer rod 110. At this time, the weight 103 will also be driven by the guide rod 102 through the guide plate 104 to return to the offset state, moving in the reverse direction to make way for the movement of the pointer slider 106, so that the pointer slider 106 can cross over the weight 103 and be located on the side of the weight 103 close to the wall surface in the first direction. And the length of the spring telescopic rod 121 is limited. After the weight 103 is locked by the one-way tooth 119 and the ratchet rack 115, the pointer slider 106 cannot be reset to the initial position again. And at this time, the first elastic member 107 is in a state of storing energy, and the impact rod 101 is not fully extended. That is, at this time, it can be considered that the weight 103 is in the process of storing energy, and then the next detection can be continued.

[0078] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A strength detection device for a building structure, used for detecting a wall surface, characterized in that: It includes a housing, a striking rod, a guide rod, a weight and a guide plate; the housing is arranged in a first direction which is perpendicular to the wall surface, and the striking rod is slidably mounted on the housing along the first direction; the weight and the guide plate are sequentially arranged in the housing along the first direction, the weight is located on the side close to the wall surface in the first direction of the guide plate, and when the guide plate moves away from the wall surface along the first direction, the weight can move synchronously with the guide plate; the guide rod is arranged along the first direction, one end of the guide rod is connected to the striking rod, and the other end passes through the weight and is fixedly connected to the guide plate; a pointer slider is arranged in the housing, and the pointer slider and the guide rod are arranged side by side in a second direction which is perpendicular to the first direction; a guiding slideway is arranged in the housing, and the guide rod and the guiding slideway are sequentially arranged in a third direction which is perpendicular to both the first direction and the second direction; the guiding slideway includes a first sliding section, a second sliding section and a third sliding section, both the first sliding section and the third sliding section are arranged along the first direction, the second sliding section is inclined and connects the first sliding section and the third sliding section, and a first edge is arranged at the end of the first sliding section far from the wall surface along the first direction, and the first edge is used to limit the guiding column from moving away from the wall surface along the first direction in the first sliding section; a guiding column is arranged on the guide plate, and in the initial state, the guiding column is slidably mounted in the first sliding section, and at this time, the weight does not contact the pointer slider when passing the pointer slider; when the guiding column slides in the third sliding section, the weight can contact the pointer slider when passing the pointer slider.

2. The strength detection device for a building structure according to claim 1, wherein: When the guiding column moves away from the wall surface along the first direction, the sliding distance of the guiding column in the first sliding section is less than the sliding distance of the guiding column in the third sliding section.

3. The strength detection device for a building structure according to claim 1, characterized in that: The housing and the weight are connected by a first elastic member which is arranged along the first direction; the guide plate is mounted in the housing by a second elastic member which is arranged along the first direction.

4. The strength detection device for a building structure according to claim 1, wherein: A pointer rod is arranged in the housing, and the pointer rod is arranged along the first direction; the pointer rod and the guide rod are arranged side by side in the second direction, the pointer slider is slidably mounted on the pointer rod, and an elastic piece is arranged on the pointer slider, the elastic piece is inclined and elastic, the elastic piece has a first end and a second end, the first end is located on the side far from the wall surface in the first direction of the second end, and the first end is located on the side close to the central axis of the pointer slider in the first direction of the second end.

5. The strength detection device for a building structure according to claim 1, characterized in that: A ratchet rack is arranged inside the outer shell. The ratchet rack is arranged along the first direction, and the ratchet rack and the guiding slideway are arranged in parallel inside the outer shell along the second direction. A first push rod, a second push rod and an adjusting member are slidably arranged on the weight. Both the first push rod and the second push rod are arranged along the first direction, and the first push rod is located on the side of the second push rod closer to the wall surface in the first direction. The adjusting member is arranged along the third direction and is located between the first push rod and the second push rod, and a one-way tooth is arranged on the adjusting member. The one-way tooth can be telescopic. After the one-way tooth meshes with the ratchet rack, the adjusting member can only move along the first direction to the side away from the wall surface, and the movement of the adjusting member along the first direction towards the side close to the wall surface is restricted. And when the first push rod and the second push rod move away from each other in the first direction, the adjusting member can move along the third direction to the side away from the ratchet rack, so that the ratchet rack and the one-way tooth are disengaged. When the first push rod and the second push rod move closer to each other in the first direction, the adjusting member can move along the third direction to the side close to the ratchet rack, so that the ratchet rack and the one-way tooth are engaged. And when the guide plate moves along the first direction to the side away from the wall surface, the first push rod and the second push rod can move away from each other in the first direction.

6. The strength detection device for a building structure according to claim 5, characterized in that: A first slideway and a second slideway are formed on the weight. The first slideway penetrates the weight along the first direction, and both the first push rod and the second push rod are slidably installed in the first slideway. The second slideway is arranged along the third direction. One end of the second slideway is communicated with the first slideway, and the other end penetrates the weight along the third direction.

7. The strength detection device for a building structure according to claim 5, wherein: The adjusting member includes an adjusting block and an adjusting rod. The adjusting block and the adjusting rod are arranged in sequence and fixedly connected in the third direction. The adjusting block is of a trapezoidal structure, and the one-way tooth is installed on the adjusting rod. A first wedge surface is arranged on the first push rod, and a second wedge surface is arranged on the second push rod. The first wedge surface and the second wedge surface are arranged face to face in the first direction. A wedge-shaped groove for cooperating with the first wedge surface and the second wedge surface is arranged on the adjusting block.

8. The strength detection device for a building structure according to claim 5, characterized in that: A hook is arranged on the guide plate. The hook is arranged on the guide plate so as to be able to rotate relative to the guide plate around the third direction. A convex platform is arranged on the weight. The convex platform is located on the side of the weight away from the wall surface along the first direction. A hanging rod is arranged at one end of the second push rod away from the wall surface along the first direction. A chute is formed on the convex platform, and the hanging rod is slidably installed in the chute. In the initial state, the hook is clamped with the hanging rod.

9. The strength detection device for a building structure according to claim 8, characterized in that: A driving block is arranged inside the outer shell. The driving block is located on the side of the hook away from the weight in the first direction, and when the hook moves along the first direction to the side away from the wall surface, the hook can abut against the driving block. After the hook abuts against the driving block, the driving block can prompt the hook to rotate around the third direction and disengage the hook from the hanging rod.

10. The strength detection device for a building structure according to claim 9, characterized in that: A spring telescopic rod is fixedly arranged on the guide plate. The spring telescopic rod is arranged along the first direction and is located on the side of the guide plate close to the wall surface in the first direction. In the initial state, the spring telescopic rod abuts against the pointer slider, and the spring telescopic rod is in a compressed state. A plurality of guiding slideways are arranged. The plurality of guiding slideways are arranged in sequence and communicated with each other inside the outer shell along the first direction. A second edge is arranged at one end of the third sliding section close to the wall surface along the first direction. The second edge is used to restrict the guiding column from moving along the first direction to the side close to the wall surface in the third sliding section.

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