A strength testing device based on a concrete pole

Abstract

This invention discloses a strength testing device based on concrete poles, relating to the field of power facility technology. The device comprises a base plate with symmetrically hinged fixing plates on both sides of the top of the base plate. The fixing plates are connected by an extended connecting rod. Each fixing plate has a fixing seat with a circular through hole fixed to its top surface. The two ends of the concrete pole are inserted into the through holes for positioning. A fixing ring is provided inside the fixing seat, and an outer ring is rotatably sleeved on the outside of the fixing ring. Two sets of vertical first rollers and two sets of longitudinal second rollers are arranged on the outer sides of both, tightly fitting against the outer wall of the pole for stable clamping and positioning. This device can apply bending force to the concrete pole in both forward and reverse directions, completing bending strength testing from all angles, providing comprehensive testing dimensions. The overall structure is simple, easy to operate, and runs smoothly. It is adaptable to testing various specifications of concrete poles, exhibiting good versatility. It can significantly improve testing efficiency and effectively ensure accurate and reliable strength test data.

Description

Technical Field

[0001] This invention relates to the field of power facility technology, and in particular to a strength testing device based on concrete poles. Background Technology

[0002] Concrete poles are core foundation components for power transmission and communication infrastructure projects. Their bending strength directly determines the safety and service life of the lines, making strength testing during both manufacturing and maintenance essential. With the continuous development of the power infrastructure industry, the production specifications of concrete poles have become increasingly diverse, leading to the emergence of various pole strength testing equipment on the market. Early testing equipment was mostly simple fixed clamping structures, capable of only performing point strength testing on poles of a single specification. Subsequently, the industry gradually optimized and developed fine-tunable clamping testing equipment, initially achieving adaptable testing for poles of different sizes, basically meeting the needs of foundation bending strength testing, and is widely used in pole production testing scenarios.

[0003] Current concrete pole strength testing equipment still suffers from numerous technical shortcomings, limiting testing accuracy and efficiency. Existing equipment primarily uses fixed, rigid clamping structures, which cannot adaptively adjust to the pole's outer diameter. This results in poor centering and positioning, leading to pole shifting and loosening during testing, and consequently, significant data deviations. Furthermore, most equipment cannot achieve synchronous symmetrical swinging of the two sides, resulting in uneven bending stress on the pole and difficulty in performing bidirectional bending strength tests. The testing dimension is limited, failing to comprehensively assess the pole's overall strength performance. The equipment's versatility, testing stability, and accuracy all need improvement. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art, and to propose a strength testing device based on concrete poles.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution: A strength testing device based on a concrete pole includes a base plate, which is a rectangular plate structure. A pair of symmetrically arranged fixing plates are hinged to both sides of the top surface of the base plate and connected by an extended connecting rod. A fixing seat is fixedly installed on the top surface of each fixing plate, and a circular through hole is opened on each fixing seat. A concrete pole is placed between the pair of fixing seats, and the two ends of the concrete pole are respectively inserted through the two circular through holes to achieve the positioning of the concrete pole. A fixing ring integrally formed with a circular through hole is fixedly installed on the inner side of the fixing base. An outer ring is rotatably fitted on the outer surface of the fixing ring. A pair of vertically parallel first rollers are arranged on the outer sides of the fixing ring and the outer ring. A pair of longitudinally parallel second rollers are arranged on the outer sides of the fixing ring and the outer ring. The pair of first rollers and the pair of second rollers are staggered to form a parallelogram limiting structure. The first rollers and the second rollers respectively abut against the outer wall surface of the concrete pole.

[0006] Preferably, a pair of fixed shafts are rotatably inserted on both sides of the top surface of the base plate, and the top end of each fixed shaft is fixedly connected to the fixed plate on the corresponding side. A pair of arc-shaped sliding grooves distributed around the fixed shafts are opened on the left and right sides of the top surface of the base plate.

[0007] Preferably, each of the fixed plates has a limiting pin fixedly installed at the two corners on the rear side of the bottom surface, and the bottom end of each limiting pin is slidably inserted into the arc-shaped groove on the corresponding side to limit and guide the rotation stroke of the fixed plate.

[0008] Preferably, each of the fixed plates is fixedly provided with a fixed connecting plate on its front side. The front end of the fixed connecting plate on the left side is movably hinged to the left end of the extended connecting rod, and the right end of the extended connecting rod is movably hinged to the center of the top surface of the fixed plate on the right side, so as to realize the adjustment and positioning of the distance between the two fixed plates.

[0009] Preferably, a hydraulic telescopic cylinder is hinged at the right front corner of the top surface of the base plate. The end of the telescopic rod of the hydraulic telescopic cylinder is movably hinged to the front end of the fixed connecting plate located on the right side, providing power support for the rotation adjustment of the fixed plate.

[0010] Preferably, an integrally formed arc-shaped rack is fixedly provided on the top surface of the outer ring, and a rectangular notch is provided on the top surface of the fixing seat. A servo motor is fixedly installed inside the rectangular notch, and a drive gear is fixedly sleeved on the end of the motor shaft of the servo motor. The drive gear meshes with the arc-shaped rack to achieve rotational adjustment of the outer ring.

[0011] Preferably, the outer surfaces of the fixing ring and the outer ring are respectively staggered and rotatably inserted with two pairs of long rod connecting shafts, and the outer end of each long rod connecting shaft is fixedly provided with a first ear seat.

[0012] Preferably, each of the first rollers has a first roller shaft fixedly inserted through the middle of its middle section. One end of each first roller shaft is rotatably inserted into a first ear on the corresponding side, and the other end of each first roller shaft is slidably inserted through the first ear on the corresponding side, thereby realizing the flexible rotation and adaptation adjustment of the first roller.

[0013] Preferably, two pairs of short rods are inserted alternately and rotatably on the outer sides of the fixed ring and the outer ring, and a second ear seat is fixedly provided at the outer end of each short rod.

[0014] Preferably, each of the second rollers has a second roller shaft fixedly inserted through the middle, one end of each second roller shaft is rotatably inserted into the second ear seat on the corresponding side, and the other end of each second roller shaft is slidably inserted through the second ear seat on the corresponding side, so as to realize the flexible rotation and adaptation adjustment of the second roller.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the overall structure is rationally designed and highly interconnected. By combining an adaptive clamping structure with a symmetrical swing testing structure, the problems of poor adaptability, unstable clamping, and uneven testing force in traditional testing devices are solved, effectively improving the stability and accuracy of concrete pole bending strength testing; 2. In this invention, a rotatable outer ring and an interlaced roller clamping structure are provided, which can adaptively adjust the clamping position according to different outer diameter electric rods to achieve centered flexible positioning and prevent the electric rod from shifting or loosening during testing; at the same time, the extended connecting rod can drive the two side fixing plates to rotate synchronously in opposite directions, and with the arc-shaped sliding groove and the limiting pin shaft limiting and guiding, it can ensure that the electric rod is subjected to uniform force and the testing process is stable. In summary, this invention can apply bending force in both positive and negative directions, enabling comprehensive testing of the bending strength of concrete poles with a more complete testing dimension. The equipment is easy to operate, runs stably, and can be adapted to testing concrete poles of various specifications, demonstrating strong versatility and practicality, and effectively improving testing efficiency and data accuracy. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention (excluding concrete poles); Figure 3 This is a schematic diagram of the base plate and a pair of fixing plates of the present invention; Figure 4 For the present invention Figure 3 Explosion-proof diagram of the structure; Figure 5 This is a schematic diagram of the fixed base and the structure of a pair of first rollers and a pair of second rollers of the present invention; Figure 6 For the present invention Figure 5Explosion-proof diagram of the structure; The numbers in the diagram are as follows: 100, base plate; 101, fixed shaft; 102, fixed plate; 103, arc-shaped slide groove; 104, limit pin; 105, fixed connecting plate; 106, extended connecting rod; 107, hydraulic telescopic cylinder; 108, concrete pole; 200, fixed seat; 201, fixed ring; 202, outer ring; 203, arc-shaped rack; 204, servo motor; 205, drive gear; 206, first ear seat; 207, first roller shaft; 208, first roller; 209, second ear seat; 210, second roller shaft; 211, second roller. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Example: This example provides a strength testing device based on a concrete pole. See [link to example]. Figures 1 to 6 Specifically, the base plate 100 is a rectangular plate structure. It serves as the foundation of the entire strength testing device, supporting all other components and ensuring the overall stability of the equipment. A pair of symmetrically arranged fixing plates 102 are hinged to both sides of the top surface of the base plate 100. Each fixing plate 102 supports the upper fixing seat 200 and rotates to swing the concrete pole 108, applying a bending test force. The pair of fixing plates 102 are connected by an extended connecting rod 106, which acts as a linkage transmission mechanism, enabling synchronous operation of the two fixing plates 102. Reverse rotation ensures consistent action. Each fixed plate 102 has a fixed seat 200 fixed on its top surface. The fixed seat 200 has a circular through hole for inserting and placing the concrete pole 108. It also carries clamping and adjusting components. Each fixed seat 200 has a circular through hole. The concrete pole 108 is placed between a pair of fixed seats 200. The two ends of the concrete pole 108 are inserted into the inside of a pair of circular through holes to achieve the positioning of the concrete pole 108. The concrete pole 108 is the workpiece to be tested in this strength test. It withstands bending force to complete the strength test. A fixing ring 201, integrally formed with a circular through hole, is fixedly installed on the inner side of the fixing base 200. The fixing ring 201 is integrated with the fixing base 200 and serves as the rotating base for the outer ring 202, where various roller connecting components are arranged. The outer ring 202 is rotatably fitted onto the outer surface of the fixing ring 201. The outer ring 202 can rotate around the fixing ring 201, changing the roller arrangement position during rotation to achieve adaptive adjustment of the clamping size. A pair of vertically parallel first rollers 208 are provided on the outer sides of the fixing ring 201 and the outer ring 202. 8. The rollers are arranged vertically to fit the outer wall of the concrete pole 108 and work with the other rollers to complete the centering clamping and positioning. The outer sides of the fixing ring 201 and the outer ring 202 are jointly provided with a pair of longitudinally parallel second rollers 211. The second rollers 211 are arranged longitudinally to fit the outer wall of the concrete pole 108 and combine with the first rollers 208 to form a limiting clamping structure. The pair of first rollers 208 and the pair of second rollers 211 are arranged alternately to form a parallelogram limiting structure, and the first rollers 208 and the second rollers 211 respectively abut against the outer wall surface of the concrete pole 108.

[0019] In the specific implementation process, such as Figure 3 and Figure 4 As shown, a pair of fixed shafts 101 are rotatably inserted on both sides of the top surface of the base plate 100. The fixed shafts 101 provide rotational support fulcrums for the fixed plate 102 and limit the rotation center of the fixed plate 102. The top end of each fixed shaft 101 is fixedly connected to the fixed plate 102 on the corresponding side. A pair of arc-shaped sliding grooves 103 distributed around the fixed shafts 101 are provided on the left and right sides of the top surface of the base plate 100. The arc-shaped sliding grooves 103 cooperate with the limiting pins 104 to limit the rotation trajectory and maximum rotation range of the fixed plate 102. Each fixed plate 102 has a limit pin 104 fixedly installed at the two corners on the rear side of the bottom surface. The limit pin 104 moves synchronously with the fixed plate 102 and slides in the arc-shaped slide groove 103 to realize rotation guidance and stroke limitation. The bottom end of each limit pin 104 is slidably inserted into the arc-shaped slide groove 103 on the corresponding side to realize the limiting guidance of the rotation stroke of the fixed plate 102. Each fixed plate 102 has a fixed connecting plate 105 fixedly installed on its front side. The fixed connecting plate 105 forms a connection structure between the fixed plate 102, the extended connecting rod 106, and the hydraulic telescopic cylinder 107, transmitting power. The front end of the fixed connecting plate 105 on the left side is movably hinged to the left end of the extended connecting rod 106, and the right end of the extended connecting rod 106 is movably hinged to the center of the top surface of the fixed plate 102 on the right side, so as to realize the spacing adjustment and positioning of a pair of fixed plates 102. A hydraulic telescopic cylinder 107 is hinged at the right front corner of the top surface of the base plate 100. The hydraulic telescopic cylinder 107 outputs telescopic power to drive the fixed plate 102 to complete forward and reverse rotation, providing a power source for bending tests. The telescopic rod end of the hydraulic telescopic cylinder 107 is movably hinged to the front end of the fixed connecting plate 105 located on the right side, providing power support for the rotation adjustment of the fixed plate 102.

[0020] It should be noted that: such as Figure 5 and Figure 6 As shown, an integrally formed arc-shaped rack 203 is fixedly installed on the top surface of the outer ring 202. The arc-shaped rack 203 meshes with the drive gear 205, transmitting the rotational power of the servo motor 204 to the outer ring 202. A rectangular notch is provided on the top surface of the fixed base 200. The servo motor 204 is fixedly installed inside the rectangular notch. The servo motor 204 outputs rotational power to provide power support for the angle adjustment of the outer ring 202. The drive gear 205 is fixedly sleeved on the end of the motor shaft of the servo motor 204. The drive gear 205 rotates with the servo motor 204, meshing and driving the arc-shaped rack 203 to complete the transmission action. The drive gear 205 and the arc-shaped rack 203 mesh with each other to realize the rotational adjustment of the outer ring 202. Two pairs of long rods are interleaved and rotatably inserted on the outer surfaces of the fixed ring 201 and the outer ring 202. Each long rod is fixedly provided with a first ear seat 206 at its outer end. The first ear seat 206 is fixed to the end of the long rod and provides a support point for the installation and movement of the first roller shaft 207. Each first roller 208 is fixedly inserted through the middle of a first roller shaft 207. The first roller shaft 207 is installed through the first roller 208 to meet the rotation and position sliding adjustment requirements of the first roller 208. One end of each first roller shaft 207 is rotatably inserted into the first ear seat 206 on the corresponding side, and the other end of each first roller shaft 207 is slidably inserted into the first ear seat 206 on the corresponding side, so as to realize the flexible rotation and adaptation adjustment of the first roller 208. Two pairs of short rod connecting shafts are alternately inserted into the outer surfaces of the fixed ring 201 and the outer ring 202. Each short rod connecting shaft has a second lug 209 fixedly installed at its outer end. The second lug 209 is fixed to the end of the short rod connecting shaft and is used to mount and support the second roller shaft 210. A second roller shaft 210 is fixedly inserted through the middle of each second roller 211. The second roller shaft 210 carries the second roller 211 and adapts to the rotation and position adjustment of the second roller 211. One end of each second roller shaft 210 is rotatably inserted into the corresponding second lug 209, and the other end of each second roller shaft 210 is slidably inserted through the corresponding second lug 209, enabling flexible rotation and adjustment of the second roller 211. The working principle of this embodiment is as follows: First, the two ends of the concrete pole 108 to be tested are inserted through the circular through holes of a pair of fixing seats 200 and the inside of the fixing ring 201, respectively, to complete the initial positioning of the concrete pole 108 and lay the foundation for subsequent strength testing.

[0021] During the clamping and fitting stage, the servo motor 204 installed inside the rectangular notch of the fixed base 200 is activated. The motor shaft of the servo motor 204 drives the drive gear 205 to rotate synchronously. Through the gear meshing transmission relationship, the drive gear 205 drives the arc-shaped rack 203 and the integrated outer ring 202 that mesh with it to perform rotational adjustment movements along the outer surface of the fixed ring 201.

[0022] During the rotation of the outer ring 202 relative to the fixed ring 201, the relative positions of a pair of first rollers 208 and a pair of second rollers 211 can be adjusted synchronously by relying on the rotation and sliding adaptation structure of the long rod connecting shaft, the first ear seat 206, and the first roller shaft 207 arranged alternately on the outside of the fixed ring 201 and the outer ring 202, as well as the rotation and sliding adaptation structure of the short rod connecting shaft, the second ear seat 209, and the second roller shaft 210.

[0023] Ultimately, a pair of vertically parallel first rollers 208 and a pair of longitudinally parallel second rollers 211 are arranged in an alternating pattern to form a stable parallelogram limiting structure, and the first rollers 208 and the second rollers 211 are respectively in close contact with the outer wall surface of the concrete pole 108.

[0024] This adaptive adjustment structure can be adapted to concrete poles 108 with different outer diameters, enabling centered positioning and flexible clamping of concrete poles 108 of various specifications, effectively preventing pole displacement and loosening during testing and ensuring test accuracy.

[0025] During the strength test, the hydraulic telescopic cylinder 107, which is hinged at the right front corner of the top surface of the base plate 100, is activated. The telescopic rod of the hydraulic telescopic cylinder 107 extends, and the end of the telescopic rod pulls the right fixed plate 105, causing the right fixed plate 102 to rotate clockwise around the fixed shaft 101.

[0026] At the same time, through the linkage transmission of the extended connecting rod 106, the left fixed connecting plate 105 and the left fixed plate 102 are pulled to rotate counterclockwise around the fixed shaft 101.

[0027] During the rotation of the two fixed plates 102, the limiting pin 104 on the rear side of the bottom surface of the fixed plate 102 slides along the corresponding arc-shaped groove 103 on the top surface of the base plate 100. Through the cooperation of the arc-shaped groove 103 and the limiting pin 104, the rotation stroke of the fixed plate 102 is precisely limited and guided, ensuring that the pair of fixed plates 102 rotate symmetrically and smoothly in opposite directions.

[0028] As the pair of fixed plates 102 rotate, they drive the pair of fixed seats 200 fixed at the top to swing in opposite directions in sync, so that the concrete pole 108 clamped and fixed is subjected to a uniform bending force, thereby completing the bending strength test of the concrete pole 108.

[0029] Once the test deformation and stress values ​​reach the preset test standards, the hydraulic telescopic cylinder 107 can be controlled to stop working, and the corresponding strength test data can be recorded.

[0030] To conduct a reverse bending strength test, simply control the retraction of the telescopic rod of the hydraulic telescopic cylinder 107 to drive a pair of fixed plates 102 to rotate in the opposite direction. This will apply a reverse bending force to the concrete pole 108 and complete the reverse strength test. The entire operation is stable and highly adaptable, and it can efficiently complete the bending strength test of the concrete pole 108.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A strength testing device based on a concrete pole, comprising a base plate (100), characterized in that: A pair of fixing plates (102) are hinged to both sides of the top surface of the base plate (100), and the pair of fixing plates (102) are connected by an extension rod (106). A fixing seat (200) is fixedly installed on the top surface of the fixing plate (102). A circular through hole is opened on the fixing seat (200). A concrete pole (108) is set between the pair of fixing seats (200). The two ends of the concrete pole (108) are respectively inserted through the two circular through holes. The inner side of the fixed base (200) is fixedly provided with a fixed ring (201) integrally formed with a circular through hole. The outer surface of the fixed ring (201) is rotatably fitted with an outer ring (202). The outer sides of the fixed ring (201) and the outer ring (202) are jointly provided with a pair of first rollers (208). The outer sides of the fixed ring (201) and the outer ring (202) are jointly provided with a pair of second rollers (211). The pair of first rollers (208) and the pair of second rollers (211) are arranged alternately to form a parallelogram limiting structure. The first rollers (208) and the second rollers (211) respectively abut against the outer wall surface of the concrete pole (108).

2. The strength testing device based on a concrete pole according to claim 1, characterized in that: A pair of fixed shafts (101) are rotatably inserted on both sides of the top surface of the base plate (100). The top end of the fixed shaft (101) is fixedly connected to the fixed plate (102) on the corresponding side. A pair of arc-shaped grooves (103) distributed around the fixed shaft (101) are provided on the left and right sides of the top surface of the base plate (100).

3. The strength testing device based on a concrete pole according to claim 2, characterized in that: The bottom surface of the fixed plate (102) is fixedly provided with two corners of the rear side of the fixed plate (102), and the bottom end of the fixed plate (104) is slidably inserted into the arc-shaped groove (103) on the corresponding side.

4. The strength testing device based on a concrete pole according to claim 1, characterized in that: A fixed connecting plate (105) is fixedly installed on the front side of the fixed plate (102). The front end of the fixed connecting plate (105) on the left side is movably hinged to the left end of the extended connecting rod (106), and the right end of the extended connecting rod (106) is movably hinged to the middle of the top surface of the fixed plate (102) on the right side.

5. The strength testing device based on a concrete pole according to claim 4, characterized in that: A hydraulic telescopic cylinder (107) is hinged at the right front corner of the top surface of the base plate (100). The end of the telescopic rod of the hydraulic telescopic cylinder (107) is movably hinged to the front end of the fixed connecting plate (105) located on the right side.

6. The strength testing device based on a concrete pole according to claim 1, characterized in that: An arc-shaped rack (203) is fixedly provided on the top surface of the outer ring (202), and a servo motor (204) is fixedly installed on the top surface of the fixed base (200). A drive gear (205) is fixedly sleeved on the end of the motor shaft of the servo motor (204), and the drive gear (205) meshes with the arc-shaped rack (203) for transmission.

7. The strength testing device based on a concrete pole according to claim 1, characterized in that: The outer surfaces of the fixed ring (201) and the outer ring (202) are respectively interleaved and rotatably inserted with two pairs of long rod connecting shafts, and the outer ends of the long rod connecting shafts are fixedly provided with a first ear seat (206).

8. The strength testing device based on a concrete pole according to claim 7, characterized in that: The first roller (208) has a first roller shaft (207) fixedly inserted in the middle. One end of the first roller shaft (207) is rotatably inserted into the first ear seat (206) on the corresponding side, and the other end of the first roller shaft (207) is slidably inserted into the first ear seat (206) on the corresponding side.

9. The strength testing device based on a concrete pole according to claim 1, characterized in that: The outer surfaces of the fixed ring (201) and the outer ring (202) are respectively interleaved with two pairs of short rod connecting shafts, and the outer ends of the short rod connecting shafts are fixedly provided with a second ear seat (209).

10. A strength testing device based on a concrete pole according to claim 9, characterized in that: The second roller shaft (210) is fixedly inserted in the middle of the second roller (211). One end of the second roller shaft (210) is rotatably inserted into the second ear seat (209) on the corresponding side, and the other end of the second roller shaft (210) is slidably inserted into the second ear seat (209) on the corresponding side.

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