Impact resistance detection device for precast pile

Abstract

The utility model relates to a device for detecting the impact resistance of a precast pile, which belongs to the technical field of building material detection equipment, and is characterized in that a clamping mechanism comprises a bottom plate, a pile bearing platform is arranged on the bottom plate, two symmetrical first support frames are arranged above the bottom plate, a guide rail is arranged in each first support frame, and a clamping mechanism is arranged on the bottom plate; the bottom of the guide rail is fixed above the bottom plate, a first guide rail sliding block and a second guide rail sliding block are installed on the guide rail, a first limiting sliding rod is arranged on the side face of the first guide rail sliding block, a first rack is fixed to the tail end of the first limiting sliding rod, a second limiting sliding rod is arranged on the side face of the second guide rail sliding block, and a second rack is fixed to the tail end of the second limiting sliding rod. A second rack is fixed to the tail end of the second limiting sliding rod. According to the utility model, the impact resistance of the precast pile can be efficiently and accurately detected, so that the overall firmness and stability of the precast pile are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building material testing equipment, in particular to a prefabricated pile impact resistance testing device. Background Art

[0002] Precast piles are precast concrete piles that are manufactured in factories or production sites and used to support engineering structures such as buildings or foundation projects. Selecting appropriate precast piles for installation and use according to engineering needs can provide stable foundation support and ensure the durability and reliability of engineering structures. For the minimum construction requirements, it is necessary to ensure that the precast piles have good lateral and longitudinal impact resistance so that they can withstand external forces and dynamic loads from all directions to further ensure the stability and reliability of the engineering structure. Therefore, it is necessary to test the impact resistance of the precast piles; however, the current precast pile impact resistance testing equipment can only test the lateral impact resistance of the precast piles, and the longitudinal impact resistance cannot be tested, resulting in the inability to meet the impact resistance testing requirements. At the same time, the impact resistance test can only be intermittently tested, and the rigidity of the precast piles under continuous impact hammer piles cannot be tested, making it difficult to ensure the quality of the precast pile body; and the current precast pile impact resistance testing equipment is difficult to adjust the impact force during the impact resistance test according to the testing requirements, making it impossible to achieve multi-faceted and multi-level testing of the impact resistance of the precast piles, and the testing effect is single, which makes the test results have limitations and error rates. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a device for detecting the impact resistance of a prefabricated pile.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] The utility model provides a prefabricated pile impact resistance performance detection device, the prefabricated pile impact resistance performance detection device comprises a clamping mechanism and an impact detection mechanism:

[0006] The clamping mechanism comprises a bottom plate, a pile bearing platform is arranged on the bottom plate, two symmetrical first support frames are arranged above the bottom plate, a guide rail is installed in each of the first support frames, and the bottom of the guide rail is fixed above the bottom plate, a first guide rail slider and a second guide rail slider are respectively installed on the guide rails, a first limiting slide bar is arranged on the side of the first guide rail slider, a first rack is fixed at the end of the first limiting slide bar, a second limiting slide bar is arranged on the side of the second guide rail slider, and a second rack is fixed at the end of the second limiting slide bar;

[0007] The impact detection mechanism includes a second support frame, a rotating motor is installed on the top of the second support frame, the rotating shaft of the rotating motor is connected to the adjusting device, the adjusting device is connected to one end of the connecting rod, and a first hinge block is installed on the other end of the connecting rod, and the bottom of the first hinge block is fixed to the top of the impact hammer.

[0008] Furthermore, in a preferred embodiment of the present invention, a spur gear is meshed between the teeth of the first rack and the teeth of the second rack.

[0009] Furthermore, in a preferred embodiment of the present invention, the spur gear is mounted on the rotating shaft of the first servo motor, and the first servo motor is fixed on the bottom plate.

[0010] Furthermore, in a preferred embodiment of the utility model, the same clamping plate is arranged above the first guide rail slider and the second guide rail slider, the top of the clamping plate is a slightly curved surface, and an impact force sensor is installed in the clamping plate.

[0011] Furthermore, in a preferred embodiment of the utility model, the same cylinders are installed above the two first support frames, and a pile clamping block is installed on the output shaft end of each cylinder, and the top of the pile clamping block is a slightly curved surface.

[0012] Furthermore, in a preferred embodiment of the utility model, a first limiting slide groove is provided on the side of the first support frame, and the first limiting slide groove is used to limit the installation of the first limiting slide rod.

[0013] Furthermore, in a preferred embodiment of the utility model, a second limiting slide groove is provided on the side of the first support frame, and the second limiting slide groove is used to limit the installation of the second limiting slide rod.

[0014] Furthermore, in a preferred embodiment of the utility model, the adjusting device includes an adjusting housing, a screw is installed in the adjusting housing, and one end of the screw is connected to the output shaft of the second servo motor.

[0015] Furthermore, in a preferred embodiment of the utility model, a second hinge block is connected to the screw rod via a screw nut, and the second hinge block is connected to the connecting rod.

[0016] Furthermore, in a preferred embodiment of the utility model, a limiting horizontal plate is provided in the second support frame, and the limiting horizontal plate is provided with a circular through hole, and the circular through hole is used to limit the installation of the impact hammer.

[0017] The beneficial technical effects of the utility model are:

[0018] The prefabricated column is placed vertically on the pile-bearing platform, and the first servo motor is controlled to start and drive the spur gear to rotate forward, thereby driving the first rack and the second rack to move toward each other. At this time, the first rack makes the clamping plate on the first guide rail slider move closer to the pile-bearing platform, and the second rack makes the clamping plate on the second guide rail slider move closer to the pile-bearing platform, thereby clamping the prefabricated pile on the pile-bearing platform to complete the clamping effect of the longitudinal impact resistance performance test of the prefabricated pile. The impact force sensor can detect the impact force currently borne by the prefabricated pile, achieve the purpose of the longitudinal impact resistance performance test of the prefabricated pile, and improve the longitudinal load-bearing capacity of the prefabricated pile. Capacity and reliability; control the output shaft of the second servo motor to drive the screw to rotate, thereby driving the second hinge block to adjust to the left synchronously through the screw nut, and fixing the second hinge block. At this time, the left adjustment of the second hinge block will cause the connecting rod to extend downward and gradually tend to vertical, and the impact hammer will adjust downward and move closer to the precast pile below. Moreover, since the second hinge block is close to the left side of the adjustment shell, the reciprocating impact stroke of the impact hammer driven by the rotation of the adjustment shell is shortened, and its impact force will be reduced, so as to achieve the effect of adjusting to the minimum impact force, and realize the purpose of testing the impact resistance of the precast pile according to the detection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of the clamping mechanism of the utility model;

[0023] Figure 4 It is a partial structural schematic diagram of the clamping mechanism of the utility model;

[0024] Figure 5 It is a schematic diagram of the overall structure of the regulating device of the utility model.

[0025] In the figure:

[0026] 1. Bottom plate; 2. First support frame; 3. Guide rail; 4. First guide rail slider; 5. Second guide rail slider; 6. First limiting slide bar; 7. First rack; 8. Second limiting slide bar; 9. Second rack; 10. Spur gear; 11. First servo motor; 12. Clamping plate; 13. Cylinder; 14. Pile clamping block; 15. First limiting slide groove; 16. Second limiting slide groove; 17. Second support frame; 18. Rotating motor; 19. Connecting rod; 20. First hinge block; 21. Impact hammer; 22. Adjusting housing; 23. Screw; 24. Second servo motor; 25. Second hinge block; 26. Limiting cross plate; 27. Pile support platform. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the utility model, the reference to "embodiment", "one embodiment", "some embodiments", or "other embodiments" indicates that the specific features, structures or characteristics described in conjunction with the embodiment are included in at least some embodiments, but not necessarily all embodiments. Multiple occurrences of "embodiment", "one embodiment", or "some embodiments" do not necessarily all refer to the same embodiment. If the specification describes that a component, feature, structure or characteristic "may", "perhaps" or "can" be included, the specific component, feature, structure or characteristic is not necessarily included. If the specification or claim mentions "one" element, it does not mean that there is only one element. If the specification or claim mentions "another" element, it does not exclude the presence of more than one other element. In addition, specific features, structures, functions or characteristics can be combined in one or more embodiments in any suitable manner. For example, the first embodiment can be combined with the second embodiment, as long as the specific features, structures, functions or characteristics associated with the two embodiments are not mutually exclusive.

[0029] In the description of the present invention, unless otherwise specified, the use of ordinal adjectives such as "first", "second", and "third" to describe a common object only refers to different instances of the same object, and does not imply that the objects described in this way must adopt a given order, whether in time, space, order, or any other manner. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] Example

[0032] like Figure 1 As shown, the present application provides a device for testing the impact resistance of prefabricated piles, and the device for testing the impact resistance of prefabricated piles includes a clamping mechanism and an impact detection mechanism.

[0033] like Figure 1 , 2 As shown in Figures 3 and 4, the clamping mechanism includes a base plate 1, on which a pile support platform 27 is provided, and above the base plate 1 there are two symmetrical first support frames 2, each of which is equipped with a guide rail 3, and the bottom of the guide rail 3 is fixed above the base plate 1, and on the guide rail 3 are respectively installed a first guide rail slider 4 and a second guide rail slider 5, a first limiting slide bar 6 is provided on the side of the first guide rail slider 4, and a first rack 7 is fixed to the end of the first limiting slide bar 6, a second limiting slide bar 8 is provided on the side of the second guide rail slider 5, and a second rack 9 is fixed to the end of the second limiting slide bar 8.

[0034] like Figure 3 , 4 As shown, a spur gear 10 is meshed between the teeth of the first rack 7 and the teeth of the second rack 9 .

[0035] like Figure 3 As shown, the spur gear 10 is mounted on the rotating shaft of the first servo motor 11 , and the first servo motor 11 is fixed on the base plate 1 .

[0036] like Figure 2 As shown, the same clamping plate 12 is disposed above the first guide rail slider 4 and the second guide rail slider 5 , the top of the clamping plate 12 is a slightly curved surface, and an impact force sensor is installed in the clamping plate 12 .

[0037] It should be noted that when the longitudinal impact resistance of the precast pile is tested, the precast column is first placed on the pile support platform 27 in the vertical direction, and then the first servo motor 11 is controlled to start forward rotation. The first servo motor 11 causes the spur gear 10 to rotate in the forward direction. When the spur gear 10 rotates, it will simultaneously drive the first rack 7 and the second rack 9, so that the first rack 7 and the second rack 9 move toward each other. At this time, the first rack 7 drives the first guide rail slider 4 to move closer to the pile support platform 27 through the first limiting slide bar 6, and the second rack 9 drives the second guide rail slider 5 to move closer to the pile support platform 27 through the second limiting slide bar 8, until the clamping plate 1 on the first guide rail slider 4 is 2 and the clamping plate 12 on the second guide rail slider 5 clamp the precast pile on the pile support platform 27, thereby completing the clamping effect of the precast pile longitudinal impact resistance performance test, and then the impact detection mechanism can be controlled to perform the longitudinal impact resistance test on the vertical precast pile; during the impact test on the precast pile body, the impact force sensor can detect the impact force currently borne by the precast pile and convert it into a specific value for output, thereby achieving the purpose of the longitudinal impact resistance performance test of the precast pile, improving the longitudinal bearing capacity and reliability of the precast pile, avoiding the probability of safety accidents caused by poor longitudinal impact resistance, and ensuring the quality of the engineering structure.

[0038] like Figure 1 , 2 As shown, the same cylinder 13 is installed above each of the two first support frames 2, and a pile clamping block 14 is installed on the output shaft end of each cylinder 13, and the top of the pile clamping block 14 is a slightly curved surface.

[0039] It should be noted that if it is necessary to test the longitudinal impact resistance of the precast pile, the middle part of the precast pile is placed horizontally on the pile support platform 27, and the two ends of the precast pile are placed on the clamping plate on the first guide rail slider 4 and the clamping plate 12 on the second guide rail slider 5 respectively. The precast pile is in a horizontally stable placement state. At this time, the cylinder 13 is started, so that the output rods of the two cylinders 13 extend outward at the same time, so that the pile body clamping block 14 on the output shaft end of the cylinder 13 can cooperate with the upper part of the clamping plate 12 to clamp and fix the two ends of the precast pile, thereby completing the effect of horizontal clamping of the precast pile, and then the impact detection mechanism can be controlled to perform a horizontal impact resistance test on the pile body of the vertical precast pile, so as to achieve the purpose of detecting the horizontal impact resistance of the precast pile, and further determine the horizontal impact resistance parameters of the precast pile, so as to facilitate the construction personnel to evaluate and adjust the precast pile, improve the all-round impact resistance stability of the precast pile, improve the firmness of the project, reduce the occurrence of engineering accidents, and have high reliability.

[0040] like Figure 4 As shown, a first limiting sliding groove 15 is provided on the side of the first supporting frame 2 , and the first limiting sliding groove 15 is used to limit the installation of the first limiting sliding rod 6 .

[0041] like Figure 3 As shown, a second limiting sliding groove 16 is provided on the side of the first supporting frame 2 , and the second limiting sliding groove 16 is used to limit the installation of the second limiting sliding rod 8 .

[0042] It should be noted that since the spur gear 10 drives the first rack 7 and the second rack 9 to translate in the horizontal direction, if only one limiting slide groove is set for sharing, there will be a large activity space between the first limiting slide bar 6 and the second limiting slide bar 8, which will cause the first limiting slide bar 6 and the second limiting slide bar 8 to shake, rub or even break during the translation process, which is not conducive to driving the sliding of the first guide rail slider 4 and the second guide rail slider 5, and thus cannot stably clamp and fix the precast pile; therefore, the first limiting slide groove 15 and the second limiting slide groove 16 are respectively set for the translation of the first limiting slide bar 6 and the second limiting slide bar 8, which can further limit the translation sliding trajectory, avoid shaking, friction and breakage, improve the operating performance and service life of the device, and ensure the stability and reliability of the precast pile clamping.

[0043] like Figure 1 , 2 As shown, the impact detection mechanism includes a second support frame 17, a rotating motor 18 is installed on the top of the second support frame 17, the rotating shaft of the rotating motor 18 is connected to the adjusting device, the adjusting device is connected to one end of the connecting rod 19, and the other end of the connecting rod 19 is installed with a first hinge block 20, and the bottom of the first hinge block 20 is fixed to the top of the impact hammer 21.

[0044] It should be noted that, when the precast pile is placed on the clamping mechanism, the rotating motor 18 is started, and the rotating shaft of the rotating motor 18 drives the adjusting device to rotate horizontally at a uniform speed. It should be supplemented that the installation connection point of the rotating shaft of the rotating motor 18 on the adjusting device is biased to the left, and the adjusting device is in a state of being shorter on the left and longer on the right; so that when the connection between the connecting rod 19 and the second hinge block 25 is located on the right side of the adjusting device, the rotation of the adjusting device can drive the impact hammer 21 to move up and down through the connecting rod 19 based on the hinged activity of the first hinge block 20 and the second hinge block 25, so that the impact hammer 21 can perform reciprocating impact hammering on the precast pile, thereby testing the continuous impact resistance of the precast pile, ensuring that the overall rigidity of the precast pile meets the construction requirements, reducing the damage to the pile body when the precast pile is continuously hammered into the ground during the actual construction process, and improving the durability and reliability of the precast pile.

[0045] like Figure 2 As shown, the adjusting device includes an adjusting housing 22 , a screw rod 23 is installed in the adjusting housing 22 , and one end of the screw rod 23 is connected to the output shaft of the second servo motor 24 .

[0046] like Figure 2As shown, the screw rod 23 is connected to a second hinge block 25 via a screw rod nut, and the second hinge block 25 is connected to the connecting rod 19 .

[0047] like Figure 1 As shown, a limiting transverse plate 26 is disposed in the second support frame 17 , and a circular through hole is formed in the limiting transverse plate 26 , and the circular through hole is used to limit the installation of the impact hammer 21 .

[0048] It should be noted that the impact resistance of different precast piles is different, so the impact force they can withstand is also different. Therefore, it is necessary to detect the maximum and minimum impact resistance that the precast piles can withstand, so that the construction personnel can adjust the production of the precast piles according to the maximum impact resistance. When it is necessary to adjust to a smaller impact force, the output shaft of the second servo motor 24 is controlled to rotate, so that the screw rod 19 rotates synchronously. When the screw rod 19 rotates, it will drive the screw nut to translate to the left, thereby driving the second hinge block 25 to adjust to the left synchronously, and after adjusting to a certain position, the second servo motor 24 is controlled to stop rotating, so that the second hinge block 25 is fixed. At this time, the left adjustment of the second hinge block 25 will cause the connecting rod to extend downward and gradually tend to vertical, and the impact hammer 21 will adjust downward to move closer to the precast pile below, and because the second hinge block 25 is close to the left side of the adjustment shell, When the adjusting shell 22 rotates, the reciprocating impact stroke of the impact hammer 21 is shortened, and its impact force will be reduced, so as to achieve the effect of adjusting to the minimum impact force; if the maximum impact force is required, it is only necessary to control the second hinge block 25 to move to the right side of the adjusting shell. Since the second hinge block 25 is close to the right side of the adjusting shell 22, the reciprocating impact stroke of the impact hammer 21 is enlarged when the adjusting shell 22 rotates, and its impact force will be increased, so as to achieve the effect of adjusting to the maximum impact force, and realize the purpose of testing the impact resistance of prefabricated piles according to the detection requirements, so as to facilitate the construction personnel to adjust the production of prefabricated piles to improve the impact resistance and bearing stability of the prefabricated piles; wherein, the limiting horizontal plate 26 can make the impact hammer stably reciprocate in the vertical direction, improve the hammering stability, avoid the shaking and deviation of the impact hammer 21, and ensure the accuracy of the detection results.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A device for testing the impact resistance of precast piles, comprising a clamping mechanism and an impact detection mechanism, characterized in that: The clamping mechanism includes a base plate, a pile bearing platform is provided on the base plate, two symmetrical first support frames are provided above the base plate, a guide rail is installed in each of the first support frames, and the bottom of the guide rail is fixed above the base plate, a first guide rail slider and a second guide rail slider are respectively installed on the guide rails, a first limiting slide rod is provided on the side of the first guide rail slider, a first rack is fixed to the end of the first limiting slide rod, a second limiting slide rod is provided on the side of the second guide rail slider, and a second rack is fixed to the end of the second limiting slide rod; The impact detection mechanism includes a second support frame, a rotating motor is installed on the top of the second support frame, the rotating shaft of the rotating motor is connected to the adjusting device, the adjusting device is connected to one end of the connecting rod, and the other end of the connecting rod is installed with a first hinge block, and the bottom of the first hinge block is fixed to the top of the impact hammer.

2. The device for detecting the impact resistance of precast piles according to claim 1, characterized in that: A spur gear is meshed between the teeth of the first rack and the teeth of the second rack.

3. The device for detecting the impact resistance of precast piles according to claim 2, characterized in that: The spur gear is mounted on the rotating shaft of the first servo motor, and the first servo motor is fixed on the bottom plate.

4. The device for detecting the impact resistance of precast piles according to claim 1, characterized in that: The same clamping plate is arranged above the first guide rail slider and the second guide rail slider. The top of the clamping plate is a slightly curved surface, and an impact force sensor is installed in the clamping plate.

5. The device for detecting the impact resistance of precast piles according to claim 1, characterized in that: An identical cylinder is installed above each of the two first support frames, and a pile clamping block is installed on the output shaft end of each cylinder. The top of the pile clamping block is a slightly curved surface.

6. The device for detecting the impact resistance of precast piles according to claim 1, characterized in that: A first limiting sliding groove is provided on the side surface of the first supporting frame, and the first limiting sliding groove is used to limit the installation of the first limiting sliding rod.

7. The device for detecting the impact resistance of precast piles according to claim 1, characterized in that: A second limiting sliding groove is provided on the side of the first supporting frame, and the second limiting sliding groove is used to limit the installation of the second limiting sliding rod.

8. The device for detecting the impact resistance of precast piles according to claim 1, characterized in that: The adjusting device comprises an adjusting housing, a screw rod is installed in the adjusting housing, and one end of the screw rod is connected to the output shaft of the second servo motor.

9. The device for detecting the impact resistance of precast piles according to claim 8, characterized in that: The screw rod is connected with a second hinge block via a screw rod nut, and the second hinge block is connected to the connecting rod.

10. The device for detecting the impact resistance of precast piles according to claim 1, characterized in that: A limiting transverse plate is provided in the second supporting frame. The limiting transverse plate is provided with a circular through hole. The circular through hole is used for limiting the installation of the impact hammer.

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