CN-224226558-U - Photovoltaic anchorage stretching jack

Abstract

The utility model discloses a photovoltaic anchor tensioning jack, which comprises a jacking device and a tensioning jack, wherein a jacking piston rod of the jacking device is in butt joint with the large end of a working clamping piece, a front tool clamping piece is arranged at the rear end of a jacking oil cylinder of the jacking device, a front buffer spring is arranged at the large end of the front tool clamping piece, a tensioning compression nut is arranged at the front end of the tensioning oil cylinder of the tensioning jack, through holes are formed in the center of the jacking piston rod and the center of the tensioning piston of the tensioning jack, the tail end of the tensioning piston abuts against the front part of a tool anchor plate, the rear end of the tool anchor plate is in threaded connection with a spring gland, a rear steel strand guide sleeve is connected to the large end of the rear tool clamping piece, and a rear buffer spring is sleeved on the rear steel strand guide sleeve. The utility model can solve the problems of large and heavy appearance, light tensioning operation, easy damage to the screw teeth of the working clamping piece or impurity filling in the tooth gaps, thereby affecting the anchoring performance of the photovoltaic anchorage device and causing the sliding loss of the steel strand in the prior art.

Inventors

• LAN HAIYONG
• DENG GUOQUAN
• HUANG XIAOYI
• ZENG JINLAN
• ZHANG WENQIAN
• HUANG KANG

Assignees

• 柳州凌桥预应力机械有限公司

Dates

Publication Date

20260512

Application Date

20250604

Claims (5)

1. 1. The photovoltaic anchor tensioning jack is characterized by comprising a jacking cylinder (6) and a jacking piston rod (3), wherein the front end of the jacking piston rod (3) is abutted to the large end of a working clamping piece (2), a jacking sealing plug (23) is arranged at the front part of the jacking cylinder (6), a front tool clamping piece (7) is arranged at the rear end of a cylinder body of the jacking cylinder (6), a front buffer spring (22) is arranged at the large end of the front tool clamping piece (7), the jacking cylinder (6) is communicated with a jacking cylinder oil return opening (4) and a jacking cylinder oil inlet (5), and a through hole is formed in the center of the jacking piston rod (3); The tensioning jack comprises a tensioning oil cylinder (8) and a tensioning piston (9), wherein a tensioning sealing plug (18) is arranged at the front part of the tensioning oil cylinder (8), a tensioning compression nut (20) is arranged at the front end of the tensioning oil cylinder (8), a tensioning oil inlet (10) is communicated with the front section of the tensioning oil cylinder (8), a tensioning oil return opening (11) is communicated with the rear section of the tensioning oil cylinder (8), a through hole is arranged in the center of the tensioning piston (9), a tensioning through sleeve (17) is sleeved at the through hole, one end of the tensioning through sleeve (17) abuts against the front tool clamping piece (7), the other end abuts against the small end of the rear tool clamping piece (13), the tail end of the tensioning piston (9) abuts against the front part of a tool anchor plate (12), the rear end of the tool anchor plate (12) is in threaded connection with a spring gland (15), a rear steel strand guide sleeve (14) is connected with the large end of the rear tool clamping piece (13), a rear buffer spring (16) is sleeved on the rear steel strand guide sleeve (14), and the spring (15) presses the rear buffer spring (16) in the tool anchor plate (12).
2. 2. The photovoltaic anchorage tensioning jack according to claim 1, wherein the working clamping piece (2) is sleeved in the working anchorage plate (1), the working anchorage plate (1) is fixed on a limit nut (24), and the limit nut (24) is in threaded connection with the front end of the jacking oil cylinder (6).
3. 3. The photovoltaic anchorage tensioning jack according to claim 1 or 2, wherein the rear end of the cylinder body of the jacking cylinder (6) is connected with a tensioning compression nut (20) through a connecting flange (21).
4. 4. A photovoltaic anchor tensioning jack according to claim 3, characterized in that the front tool jaw (7) and the rear tool jaw (13) are identical in specification and model.
5. 5. The photovoltaic anchor tensioning jack of claim 4, wherein the front (22) and rear (16) buffer springs are identical in gauge and model.

Description

Photovoltaic anchorage stretching jack Technical Field The utility model relates to the technical field of prestress construction, in particular to a jack for tensioning a photovoltaic anchor in prestress construction. Background The flexible support photovoltaic anchorage device is widely applied to the fields of distributed photovoltaic power generation projects, large-scale ground photovoltaic power stations and the like, but the photovoltaic anchorage device can have a slipping phenomenon when the prestress is insufficient, and the reliability is obviously reduced. The clamping piece anchor has higher requirements on tensioning load and tensioning technology, the pre-stressing force in the light Fu Rouxing bracket rope structure is relatively low, and the clamping piece cannot be pressed against after tensioning, so that the clamping piece and a steel strand cannot be completely meshed, the clamping piece anchor slipping phenomenon frequently occurs, and the problem in the prior art is that the single-hole front clamping type jack is directly tensioned. 2. The front end of the jack is not provided with a jacking device, and the jacking work clamping piece is not provided with the function of jacking, so that the problems of steel strand sliding off and the like caused by uneven follow-up of the work clamping piece are easily caused. 3. The photovoltaic anchorage device is generally tensioned, the jack needs to repeatedly topple, stretches and stretches for a plurality of strokes to be tensioned to the design stress, but the topple can only clamp a steel strand to be stressed through the working clamping piece to realize force conversion each time, so that the working clamping piece needs to work repeatedly, the damage of the screw teeth of the working clamping piece or the phenomenon that the tooth gaps are filled with impurities is easily caused, the anchoring performance of the photovoltaic anchorage device is affected, and the steel strand is caused to slip. Disclosure of utility model The utility model aims to solve the technical problems that the existing photovoltaic anchor tensioning jack is large in appearance, heavy and heavy, the tensioning operation is not portable enough, a jacking device is not arranged at the front end of the jack, the function of a jacking working clamping piece is not achieved, the damage of a screw tooth of the working clamping piece or the impurity filling of a tooth gap is easily caused, the anchoring performance of the photovoltaic anchor is affected, and the sliding of a steel strand is caused. The technical scheme includes that the photovoltaic anchor tensioning jack comprises a jacking device at the front end and a tensioning jack at the rear end, wherein the jacking device comprises a jacking oil cylinder and a jacking piston rod arranged in the jacking oil cylinder, the front end of the jacking piston rod is in butt joint with the large end of a working clamping piece arranged in a working anchor plate, a jacking sealing plug is arranged at the front part of the jacking oil cylinder, a front tool clamping piece is arranged at the rear end of a cylinder body of the jacking oil cylinder, a front buffer spring is arranged at the large end of the front tool clamping piece, a jacking cylinder oil return opening and a jacking cylinder oil inlet are respectively communicated at the positions of the jacking oil cylinder in front of and behind a piston of the jacking piston rod, and a through hole for a steel strand to pass through is arranged in the center of the jacking piston rod; The tensioning jack comprises a tensioning oil cylinder and a tensioning piston, wherein a tensioning sealing plug is arranged at the front part of the tensioning oil cylinder, a tensioning compression nut is arranged at the front end of the tensioning oil cylinder, a tensioning cylinder oil inlet is communicated with the front section of the tensioning oil cylinder at the inner end position of the tensioning sealing plug, a tensioning cylinder oil return opening is communicated with the rear section of the tensioning oil cylinder, a through hole for a steel strand to pass through is formed in the center of the tensioning piston, a tensioning core penetrating sleeve is sleeved on the through hole, one end of the tensioning core penetrating sleeve props against the front tool clamping piece, the other end of the tensioning core penetrating sleeve props against the small end of a rear tool clamping piece arranged in a tool anchor plate, the tail end of the tensioning piston props against the front part of the tool anchor plate, the rear end of the tool anchor plate is in threaded connection with a spring gland, a rear steel strand guide sleeve extending out of the spring gland is connected to the large end of the rear tool clamping piece, a rear buffer spring is sleeved on the rear steel strand guide sleeve, and the spring gland presses the rear buffer spring into the tool anchor plate. Accord