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CN-224216477-U - Bridge deck pavement layer shear stress testing device

CN224216477UCN 224216477 UCN224216477 UCN 224216477UCN-224216477-U

Abstract

The utility model discloses a bridge deck pavement layer shear stress testing device; the bridge deck pavement shear stress testing device comprises a base, a frame plate arranged on two sides of the upper end of the base, a pressing component arranged on the lower side of the center of the frame plate, a shearing component arranged on the lower side of the pressing component and a displacement component arranged on two sides of the lower end of the base, when a bridge deck pavement needs to be subjected to a shear stress testing, a motor is controlled to operate to drive a first bevel gear connected with the first bevel gear to rotate, meshing drives two second bevel gears on two sides to rotate, a hydraulic jack is controlled to extend downwards, a top block moves downwards, balance plates on two sides are embedded in grooves, side plates are embedded in side grooves and rear plates are sleeved on the limit of the outer surface of a rear rod arranged in the rear grooves, the top block moves downwards more stably, and therefore the shearing plate is driven to move downwards more stably, the bridge deck and the pavement layer on the lower side are subjected to the shear testing, and the testing stability is improved.

Inventors

  • WANG YUNLONG
  • Zhai Yuanpeng
  • WANG ZIHUI
  • HAN YU
  • Lv Xiaochao

Assignees

  • 黑龙江省公路桥梁勘测设计院有限公司

Dates

Publication Date
20260508
Application Date
20250326

Claims (10)

  1. 1. The bridge deck pavement layer (7) shear stress testing device is characterized by comprising a base (1), a frame plate (2) arranged on two sides of the upper end of the base (1), a pressing component arranged on the lower side of the center of the frame plate (2), a shearing component arranged on the lower side of the pressing component and a displacement component arranged on two sides of the lower end of the base (1); The pressing assembly comprises a hydraulic jack (301) arranged at the lower side of the center of the frame plate (2), a jacking block (302) is arranged at the lower end of the hydraulic jack (301) in a matched mode, balance plates (303) are arranged on the surfaces of two sides of the jacking block (302), and grooves (304) matched with the balance plates (303) are formed in the inner walls of two sides of the frame plate (2); The shearing assembly comprises a slot (401) arranged on the lower side of the top block (302), a plugboard (402) is detachably inserted in the slot (401), an inner groove (403) is formed in the front side (307) and the rear side (307) of the plugboard (402), and a panel (404) is movably arranged in the inner groove (403); The displacement assembly comprises a hollow groove (501) formed in the front end and the rear end of two sides of a base (1), a first conical gear (502) is arranged on the transverse inner wall of the hollow groove (501), a motor (503) is connected between the first conical gears (502) on the front side and the rear side in a matched mode, and a second conical gear (504) matched with the first conical gear (502) is arranged on the inner wall of the lower end of the hollow groove (501).
  2. 2. The shear stress testing device for the bridge deck pavement layer (7) according to claim 1, wherein the side grooves (305) are formed in the central side walls of the grooves (304), and side plates (306) matched with the side grooves (305) are arranged on the central outer walls of the balance plates (303).
  3. 3. The shear stress testing device for the bridge deck pavement layer (7) according to claim 1, wherein the rear side (307) of the slot (304) is provided with a rear slot, a rear rod (308) is arranged in the rear slot, the rear side (307) of the balance plate (303) is provided with a rear plate (309) matched with the rear slot, and the rear plate (309) is matched and sleeved on the outer wall of the rear rod (308).
  4. 4. The device for testing shear stress of a bridge deck pavement layer (7) according to claim 1, wherein the upper side and the lower side of the inner groove (403) are provided with first side grooves (405), the upper side and the lower side of the panel (404) are provided with first side plates (406) which are matched with the first side grooves (405), one side of each first side plate (406) close to the center of the panel (402) is provided with a first telescopic rod (407), and the outer wall of each first telescopic rod (407) is sleeved with a first spring (408) in a matched mode.
  5. 5. The shear stress testing device for a bridge deck pavement layer (7) according to claim 1, wherein the front side (307) and the rear side (307) of the slot (401) are provided with caulking grooves (409) which are mutually matched with the panel (404), and pushing plates (410) are movably arranged in the caulking grooves (409).
  6. 6. The device for testing shear stress of a bridge deck pavement layer (7) according to claim 5, wherein the upper side and the lower side of the caulking groove (409) are provided with second side grooves (411), the upper side and the lower side of the push plate (410) are provided with second side plates (412) matched with the second side grooves (411), one side, close to the inserting plate (402), of each second side plate (412) is provided with a second telescopic rod (413), and a second spring (414) is sleeved on the outer wall of each second telescopic rod (413) in a matched mode.
  7. 7. The shear stress testing device for a bridge deck pavement layer (7) according to claim 1, wherein the outer surface of the lower side of the plugboard (402) is provided with a shearing plate (415) in a matched manner.
  8. 8. The device for testing shear stress of the bridge deck pavement layer (7) according to claim 1, wherein a bottom groove (505) is formed in the outer portion of the lower side of the empty groove (501), a screw (506) is arranged in the bottom groove (505), a bottom plate (507) is sleeved on the outer wall of the screw (506) in a matched mode, and a moving wheel (510) is arranged on the lower end surface of the bottom plate (507) in a matched mode.
  9. 9. The shear stress testing device for the bridge deck pavement layer (7) according to claim 8, wherein the side wall of the bottom groove (505) is provided with a limit groove (508), and the side wall of the bottom plate (507) is provided with a limit plate (509) which is mutually matched with the limit groove (508).
  10. 10. The shear stress testing device for the bridge deck pavement layer (7) according to claim 1, wherein the bridge deck plate (6) is inserted into the upper side of the center of the base (1), and the pavement layer (7) is arranged at the upper end of the bridge deck plate (6) in a matched mode.

Description

Bridge deck pavement layer shear stress testing device Technical Field The utility model relates to the technical field of testing devices, in particular to a bridge deck pavement layer shear stress testing device. Background Along with the rapid development of the economy in China, the highway bridge construction industry is greatly developed, and the bridge construction has reached the world leading level. The bridge deck pavement layer is used as an important component of the bridge structure, and under the action of external comprehensive factors, pavement layer diseases caused by insufficient shearing capacity of the whole pavement layer structure are particularly expressed as pushing permanent deformation, delamination, cracks and the like. Therefore, the overall shear performance of the bridge deck pavement structure is an important mechanical index of the bridge deck pavement structure, and accurate measurement is required. The existing bridge deck pavement shear stress testing device has the problems that 1, the existing bridge deck pavement shear stress testing device is composed of hydraulic equipment and a frame body, is heavy in structure, needs to be moved to a using position by means of conveying equipment in the process of testing, and needs to be independently positioned and fixed, and the testing device cannot directly and autonomously move, so that inconvenience is brought to use. 2. And traditional testing arrangement is to the shear property test under the straight state more, is difficult to simulate the bending shear combined action under the bending deformation state of bridge floor because of load or temperature, leads to test result and actual conditions to have the deviation. 3. Meanwhile, the pressing structure of the existing testing device only presses down through hydraulic equipment to realize shearing force application, but the hydraulic equipment transversely shakes in the stretching process, so that the shearing force application is unstable. Disclosure of utility model The utility model aims to provide a bridge deck pavement layer shear stress testing device for solving the problems in the background technology. In order to solve the technical problems, the utility model provides the following technical proposal that the device comprises a base, a frame plate arranged at two sides of the upper end of the base, a pressing component arranged at the lower side of the center of the frame plate, a shearing component arranged at the lower side of the pressing component and displacement components arranged at two sides of the lower end of the base; the pressing assembly comprises a hydraulic jack arranged at the lower side of the center of the frame plate, a jacking block is arranged at the lower end of the hydraulic jack in a matched mode, balance plates are arranged on the surfaces of two sides of the jacking block, and grooves matched with the balance plates are formed in the inner walls of two sides of the frame plate; The shearing assembly comprises a slot arranged on the lower side of the top block, a plugboard is detachably inserted in the slot, inner grooves are formed in the front side and the rear side of the plugboard, and a panel is movably arranged in the inner grooves; The displacement assembly comprises an empty groove formed in the front end and the rear end of two sides of the base, a first conical gear is arranged on the transverse inner wall of the empty groove, a motor is connected between the first conical gears on the front side and the rear side in a matched mode, and a second conical gear matched with the first conical gear is arranged on the inner wall of the lower end of the empty groove. As a still further proposal of the utility model, the side wall of the center of the slotting is provided with a side slot, and the outer wall of the center of the balance plate is provided with a side plate which is mutually matched with the side slot. As a still further proposal of the utility model, the rear side of the slot is provided with a rear slot, the rear slot is internally provided with a rear rod, the rear side of the balance plate is provided with a rear plate matched with the rear slot, and the rear plate is matched and sleeved on the outer wall of the rear rod. As a still further scheme of the utility model, the upper side and the lower side of the inner groove are provided with first side grooves, the upper side and the lower side of the panel are provided with first side plates matched with the first side grooves, one side of each first side plate, which is close to the center of the plugboard, is provided with a first telescopic rod, and the outer wall of each first telescopic rod is sleeved with a first spring in a matched manner. As a still further proposal of the utility model, the front side and the rear side of the slot are provided with caulking grooves which are mutually matched with the panels, and the inside of the caulking grooves is movabl