Adjustable excitation hammer mounting seat for grouting compactness detection

Abstract

The utility model relates to the technical field of pile foundation engineering quality detection equipment, in particular to an adjustable excitation hammer mounting seat for grouting compactness detection, which is characterized in that an excitation hammer is screwed on the mounting seat through a bolt, the mounting seat is slidably erected on a guide rod, and two support seats are respectively and fixedly arranged on the left side wall and the right side wall of the mounting seat in bilateral symmetry; the upper end and the lower end of the guide rod are fixedly arranged on the supporting frames on the upper side and the lower side respectively, the two supporting rods movably penetrate through the supporting bases on the left side and the right side respectively, the upper end and the lower end of each supporting rod are fixedly arranged on the supporting frames on the upper side and the lower side respectively, and the supporting springs are arranged on the supporting rods in a sleeving mode. The upper end of the supporting spring abuts against the supporting frame on the upper side. The spring structure is adopted to drive the excitation hammer, so that the same striking mode of the excitation hammer in different working environments is controlled through the fixed compression stroke of the spring structure, fixed and unified vibration waves are generated, and grouting detection of a cast-in-place pile is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pile foundation engineering quality detection equipment technical field, concretely relates to a adjustable exciting hammer mounting seat for grouting compactness detection. BACKGROUND

[0002] The grouting compactness detection has extremely important significance in the construction engineering, especially in the construction of prestressed concrete bridge, and the grouting compactness is directly related to the protection effect of prestressed tendon, if grouting is not dense, water and air are easy to enter the hole, resulting in corrosion of prestressed tendon, thereby reducing its effective prestress, and even possibly leading to prestressed tendon fracture, greatly influencing the durability and safety of bridge, and the grouting quality defect can also lead to concrete stress concentration, thereby changing the design stress state of beam body and influencing the bearing capacity and service life of prestressed concrete bridge.

[0003] Usually, the grouting compactness is detected by using hole grouting compactness detector (impact echo instrument), and the principle of hole grouting compactness detector (impact echo instrument) is to excite transient impact elastic wave on the surface of structure or component by artificial impact and receive direct, reflected, refracted and transmitted echo signals, and the thickness and defect of the measured structure or component are judged by analyzing the change of wave velocity, wave shape and main frequency and other parameters, and the method has the phenomenon that the same equipment is knocked by different people, and the waveforms are different, and the quality of waveform greatly influences the final discrimination result, so it is necessary to adopt a standard and unified method to regulate the knocking in order to improve the waveform quality and the identification of analysis result.

[0004] The artificial knocking is a kind of physical excitation with strong experience, in order to avoid unnecessary troubles caused by experience in detection, a physical device is used to replace the artificial knocking excitation, and the corresponding platform structure for installing the exciting hammer is designed. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of adjustable exciting hammer mounting seats for grouting compactness detection, it is driven by adopting spring structure to exciting hammer, to realize the same hitting mode of exciting hammer in different working environments by the fixed compression stroke of spring structure, to generate fixed, unified vibration wave, to realize the grouting detection of cast-in-place pile.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] It includes mounting seat, exciting hammer, wherein bolt is fixedly arranged on exciting hammer, and exciting hammer is rotatably arranged on mounting seat by bolt, and it further includes:

[0008] The guiding rods are symmetrically arranged in pairs, and the two guiding rods of one pair are symmetrically arranged in front and back.

[0009] The support seats are symmetrically arranged in pairs and fixed on the left and right side walls of the mounting seat, and the support seats extend out of the front and back guiding rods of one pair.

[0010] The support frames are symmetrically arranged in pairs, and the upper and lower ends of the guiding rods are fixed on the upper and lower support frames.

[0011] The support rods are movably arranged in pairs on the left and right support seats, and the upper and lower ends of the support rods are fixed on the upper and lower support frames.

[0012] The support spring is sleeved on the support rod, and the upper end of the support spring is arranged on the upper support frame, and the lower end of the support spring is arranged above the support seat.

[0013] Preferably, the lower end of the support spring is fixed with a support ring, the support ring is movably sleeved on the support rod, the support spring is arranged on the upper surface of the support seat through the support ring, a limiting rod is fixed on the support ring, a limiting groove is formed on the wall of the guiding rod facing the support ring, and the limiting rod is movably inserted into the limiting groove.

[0014] Preferably, the wall of the lower support frame facing the support seat is fixed with an elastic sheet.

[0015] Preferably, the left and right side walls of the lower support frame are rotatably provided with limiting seats through torsion springs, the front and back sides of the limiting seats are symmetrically provided with one-way limiting claws, the one-way limiting claws are rotatably arranged on the side walls of the support frame through torsion springs, the one-way limiting claws are clamped on the side edges of the limiting seats, a trigger handle is fixed on the one-way limiting claw, and the upper end of the trigger handle extends above the lower support frame.

[0016] Preferably, the upper surface of the upper support frame is fixed with a mounting sleeve, a limiting plate is movably arranged in the mounting sleeve, a through hole is formed in the limiting plate, a hook is fixed on the upper surface of the mounting seat, and the hook is arranged in cooperation with the through hole of the limiting plate.

[0017] Preferably, the outer of the support frame is provided with a mounting frame, and the front and rear walls of the support frame are movably arranged on the inner walls of the mounting frame, the threaded sleeves are fixed on the front and rear edges of the support frame, the threaded rods are rotatably arranged on the inner walls of the mounting frame through bearings, the threaded rods are rotatably arranged in the threaded sleeves through threaded connection, the upper ends of the threaded rods are arranged on the top plate of the mounting frame, and the transmission rods are rotatably arranged on the upper surface of the mounting frame through pivots, and the front and rear ends of the transmission rods are movably connected with the upper ends of the front and rear threaded rods through the bevel gear sets.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] 1, this scheme adopts guide rod to support and guide installation seat, thereby setting vibration hammer on installation seat, guiding support base on installation seat through support rod, setting support spring on support rod, thereby pushing support base through compression support spring and control compression stroke, thereby pushing installation seat and driving vibration hammer to hit to detect pile foundation grouting compactness;

[0020] 2, this scheme sets up mounting frame, sets up threaded rod on mounting frame, thereby realizing position adjustment of support frame through cooperation of threaded rod and threaded sleeve, thereby realizing normal hitting of vibration hammer on uneven working surface through position adjustment of support frame. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic diagram of the utility model.

[0022] Figure 2 It is Figure 1 the left lower side view.

[0023] Figure 3 It is the structure schematic diagram of the mounting frame in the utility model.

[0024] Figure 4 It is the structure schematic diagram of the support frame, guide rod and support rod in the utility model.

[0025] Figure 5 It is the structure schematic diagram of the installation seat and vibration hammer in the utility model.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] Installation seat 1, vibration hammer 2, guide rod 3, support base 4, support frame 5, support rod 6, support spring 7, support ring 8, limiting rod 9, limiting groove 10, elastic sheet 11, limiting seat 12, one-way limiting claw 13, trigger handle 14, mounting sleeve 15, limiting plate 16, hook claw 17, mounting frame 18, threaded sleeve 19, threaded rod 20, transmission rod 21. Detailed Implementation

[0028] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] like Figures 1-5 As shown, the specific implementation adopts the following technical solution:

[0030] It includes a mounting base 1 and a vibratory hammer 2, wherein bolts are fixedly installed on the vibratory hammer 2, and the vibratory hammer 2 is screwed onto the mounting base 1 by the bolts. It also includes:

[0031] Mounting bracket 18, which is movably mounted on the outside of mounting base 1;

[0032] Support frame 5, there are two support frames 5 respectively and they are respectively arranged on the upper and lower sides of the mounting base 1. The front and rear side walls of the support frame 5 abut against the front and rear inner side walls of the mounting frame 18 respectively.

[0033] The guide rod 3 is provided in four parts, and the upper and lower ends of the guide rod 3 are respectively fixed on the support frame 5 on the upper and lower sides.

[0034] The threaded rod 20 consists of two symmetrically arranged threaded rods 20, which are screwed onto the front and rear inner side walls of the mounting frame 18 via bearings, and the upper end of the threaded rod 20 passes through the top plate of the mounting frame 18.

[0035] The threaded sleeve 19 is inserted and fixed on the front and rear sides of the support frame 5. The threaded sleeve 19 is a semi-open U-shaped structure, and the thread inside the threaded sleeve 19 is a tooth structure that mates with the thread groove on the threaded rod 20. The threaded rod 20 is inserted into the threaded sleeve 19 by threaded connection.

[0036] The transmission rod 21 is screwed onto the upper side wall of the mounting bracket 18 via bearings, and the front and rear ends of the transmission rod 21 are respectively connected to the upper ends of the threaded rods 20 on the front and rear sides via bevel gear sets.

[0037] Support base 4, there are two support bases 4 which are symmetrically fixed on the left and right side walls of the mounting base 1, and the support base 4 has a set of front and rear guide rods 3 extending out;

[0038] Mounting sleeve 15, which is fixedly mounted on the upper surface of the upper support frame 5;

[0039] The limiting plate 16 is movably inserted into the mounting sleeve 15, and the limiting plate 16 has holes.

[0040] Hook 17, the hook 17 is fixedly installed on the upper surface of the mounting base 1, and the hook 17 is configured to cooperate with the hole on the limiting plate 16;

[0041] Support rod 6, there are two support rods 6 which are movably inserted on the support seats 4 on the left and right sides respectively, and the upper and lower ends of the support rod 6 are fixedly set on the support frames 5 on the upper and lower sides respectively.

[0042] A support spring 7 is sleeved on the support rod 6, and the upper end of the support spring 7 abuts against the upper support frame 5.

[0043] The support ring 8 is fixedly disposed at the lower end of the support spring 7 and is movably sleeved on the support rod 6. The support spring 7 is movably abutted against the upper surface of the support base 4 through the support ring 8.

[0044] Limiting rods 9, two of which are fixedly fixed on the front and rear sides of the support ring 8 in a symmetrical manner. The guide rod 3 has a limiting groove 10 on the side facing the support ring 8. The end of the limiting rod 9 away from the support ring 8 is movably inserted into the limiting groove 10.

[0045] Elastic sheet 11 is fixedly disposed on the upper surface of the lower support frame 5, and the elastic sheet 11 is disposed on the side of the support base 4.

[0046] The limiting seat 12 is spun onto the side wall of the lower support frame 5 via a rotating shaft with a torsion spring, and the limiting seat 12 is located on the lower side of the support seat 4.

[0047] One-way limiting claw 13, the one-way limiting claw 13 is spun on the side wall of the lower support frame 5 by a rotating shaft with a torsion spring, and the one-way limiting claw 13 is movably locked on the side of the limiting seat 12.

[0048] The trigger handle 14 is fixedly mounted on the one-way limiting claw 13, and the upper end of the trigger handle 14 extends above the support frame 5 on the lower side.

[0049] When using this device, rotating the transmission rod 21 drives the threaded rod 20 to rotate, which in turn moves the threaded sleeve 19, thereby moving the support frame 5 within the mounting frame 18. This adjusts the position of the support frame 5 within the mounting frame 18 so that when the lower end of the mounting frame 18 abuts against the working surface, the mounting seat 1 drives the vibrating hammer 2 downward and strikes the working surface. After adjusting the position of the support frame 5, pulling the mounting seat 1 upward on the guide rod 3 moves the support seat 4 upward on the support rod 6, pushing the limiting plate 16 so that the hole on the limiting plate 16 aligns with the hook 17, thereby raising the mounting seat 1 and causing it to... The hook 17 passes through the hole in the limiting plate 16, and then the limiting plate 16 is pushed so that it hooks the hook 17. This causes the support seat 4 to press the support spring 7 and maintain it in a pressed state. Next, the limiting seats 12 on both sides of the lower support frame 5 are moved to flatten, and the one-way limiting claws 13 hold the limiting seats 12 in a flattened state. After the probe is installed and ready to receive the vibration waves generated by the vibrating hammer 2, the lower end of the mounting frame 18 is pressed against the working surface of the striking operation. Then, the limiting plate 16 is pulled to release the hook 17, and the support spring 7, through its accumulated elastic potential energy, pushes the support seat 4 downwards. The support seat 4 then causes the mounting seat 1 to descend. The mounting base 1 drives the vibrating hammer 2 to descend, causing the mounting base 1 to slide to the lowest end of the guide rod 3 and drive the vibrating hammer 2 to pass through the lower support frame 5 and strike the working surface to generate vibration waves. When the mounting base 1 drives the support seat 4 to move downward to the lowest end of its stroke, the limiting plate 16 moves to the lowest end of the limiting groove 10, thereby restricting the support ring 8 from moving further downward so that the support ring 8 disengages from the upper surface of the support seat 4. The support seat 4 pushes the trigger handle 14 downward, causing the trigger handle 14 to drive the one-way limiting pawl 13 to rotate and disengage from the limiting seat 12. The support seat 4 presses against the elastic plate 11 and clamps the elastic plate 11. Then, after the vibrating hammer 2 completes a single strike, the vibrating hammer 2 is pushed upward by the recoil force. The spring bounces up, and the bending energy-storing elastic plate 11 assists in pushing the support seat 4 upward. The limiting seat 12, which is disengaged from the one-way limiting claw 13, is pushed back and rotated upright by its rotating shaft with a torsion spring. As a result, the support seat 4 rises and is supported by the upright limiting seat 12 to prevent the support seat 4 from moving downward again. This allows the vibrating hammer 2 to strike the working surface once and then lift up, thus completing a single strike on the working surface. When the mounting seat 1 is lifted up and limited, the compression stroke of the supporting spring 7 remains constant, thus ensuring that the vibrating hammer 2 pushes the same stroke through the supporting spring 7 to strike the working surface once in any state, thereby maintaining the standard and uniform striking pattern of the vibrating hammer 2.

[0050] Compared with the prior art, the beneficial effects of this utility model are:

[0051] 1. This device is equipped with a mounting base 1 guided by a guide rod 3, through which a vibrating hammer 2 is mounted. A support base 4 guided by a support rod 6 is mounted on the mounting base 1, and a support spring 7 is mounted on the support rod 6. By compressing the support spring 7, the support base 4 is pushed, thereby realizing that the energy stored in the support spring 7 is used to push the vibrating hammer 2 to strike in a standardized pattern, which can easily generate standardized vibration waves to detect workpieces.

[0052] 2. This device uses a support frame 5 to set a guide rod 3, and an installation frame 18 is set on the outside of the support frame 5. A threaded rod 20 is set on the installation frame 18, and the threaded rod 20 is connected to the support frame 5 through a threaded sleeve 19. This allows the position of the support frame 5 within the installation frame 18 to be adjusted. Thus, in uneven working environments, by adjusting the position of the support frame 5, the vibrating hammer 2 can strike the working surface precisely when the installation frame 18 is pressed against the working surface.

[0053] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable vibratory hammer mounting base for grout compaction testing, comprising a mounting base (1) and a vibratory hammer (2), wherein a bolt is fixedly mounted on the vibratory hammer (2), and the vibratory hammer (2) is screwed onto the mounting base (1) by the bolt; characterized in that, It also includes: Guide rod (3), the guide rod (3) is arranged in pairs and is symmetrically arranged from left to right, and the two guide rods (3) in a pair are arranged symmetrically from front to back. The mounting base (1) is slidably mounted on the guide rod (3); Support base (4), the support base (4) consists of two and is fixedly installed on the left and right side walls of the mounting base (1) in a symmetrical manner, and the support base (4) extends out of a set of front and rear guide rods (3); Support frame (5), there are two support frames (5) arranged symmetrically in the upper and lower positions, and the upper and lower ends of the guide rod (3) are respectively fixed on the support frames (5) on the upper and lower sides; Support rod (6), there are two support rods (6) which are respectively movably inserted on the support seats (4) on the left and right sides, and the upper and lower ends of the support rod (6) are respectively fixed on the support frames (5) on the upper and lower sides. The support spring (7) is sleeved on the support rod (6), and the upper end of the support spring (7) abuts against the upper support frame (5), and the lower end of the support spring (7) is positioned above the support seat (4).

2. The adjustable vibratory hammer mounting base for grout compaction testing according to claim 1, characterized in that: The lower end of the support spring (7) is fixedly provided with a support ring (8), and the support ring (8) is movably sleeved on the support rod (6). The support spring (7) abuts against the upper surface of the support seat (4) through the support ring (8). A limit rod (9) is fixedly provided on the support ring (8). A limit groove (10) is opened on the wall of the guide rod (3) facing the support ring (8). The limit rod (9) is movably inserted into the limit groove (10).

3. The adjustable vibratory hammer mounting base for grout compaction testing according to claim 2, characterized in that: An elastic sheet (11) is fixedly installed on the wall of the lower support frame (5) facing the support base (4).

4. The adjustable vibratory hammer mounting base for grout compaction testing according to claim 3, characterized in that: On the left and right sides of the lower support frame (5), a limiting seat (12) is spun on by a rotating shaft with a torsion spring. One-way limiting claws (13) are symmetrically arranged on the front and rear sides of the limiting seat (12). The one-way limiting claws (13) are spun on the side wall of the support frame (5) by a rotating shaft with a torsion spring. The one-way limiting claws (13) are locked on the side of the limiting seat (12). A trigger handle (14) is fixedly arranged on the one-way limiting claw (13). The upper end of the trigger handle (14) extends above the lower support frame (5).

5. The adjustable vibratory hammer mounting base for grout compaction testing according to claim 4, characterized in that: An installation sleeve (15) is fixedly installed on the upper surface of the upper support frame (5). A limiting plate (16) is movably inserted inside the installation sleeve (15), and a through hole is provided on the limiting plate (16). A hook (17) is fixedly installed on the upper surface of the mounting base (1), and the hook (17) is configured to cooperate with the through hole on the limiting plate (16).

6. The adjustable vibratory hammer mounting base for grout compaction testing according to claim 5, characterized in that: The support frame (5) is externally mounted with a mounting frame (18), and the front and rear side walls of the support frame (5) are movably abutted against the front and rear inner side walls of the mounting frame (18). Threaded sleeves (19) are fixedly installed on the front and rear side walls of the support frame (5). Threaded rods (20) are screwed onto the front and rear inner walls of the mounting frame (18) through bearings. The threaded rods (20) are screwed into the threaded sleeves (19) through threads. The upper end of the threaded rods (20) is inserted into the top plate of the mounting frame (18). A transmission rod (21) is screwed onto the upper surface of the mounting frame (18) through a rotating shaft. The front and rear ends of the transmission rod (21) are respectively connected to the upper ends of the threaded rods (20) on the front and rear sides through a bevel gear set.

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