Space-adjustable aerial work platform connecting frame

Abstract

The invention discloses a spacing-adjustable aerial work platform connecting frame, and relates to the field of construction equipment of a power grid crossing a high-speed rail overhead line power transmission line. During high-speed rail crossing construction, a movable crossing frame is connected with a crane derrick mast through a connecting frame, different automobile crane derrick masts need to be provided with special connecting frames corresponding to hole positions, the connecting frames of different sizes and specifications cannot be used universally, and the manufacturing cost is increased. The connecting frame comprises the four bolt seat distance adjusting devices distributed on the connecting frame body, the distance between the four connecting pin holes connected with the crane derrick mast is adjusted in the length and width directions so that corresponding connection of different crane derrick mast mounting holes can be achieved, universality is improved, and in addition, the pitching angle of the aerial work platform is adjusted through the two hydraulic cylinders. The universality of the connecting frame can be conveniently realized, connecting frames of different specifications do not need to be manufactured, the manufacturing cost is effectively reduced, and the connecting frame can be conveniently mounted and the mounting difficulty is reduced when the mounting hole position of the derrick mast of the crane is inaccurate in measurement or slightly deformed.

Description

Technical Field

[0001] The invention relates to the field of construction equipment for power grid-crossing high-speed railway overhead wire transmission lines, and in particular to a connecting frame for an aerial work platform with adjustable spacing. Background Art

[0002] In recent years, the national economy has developed rapidly, and the demand for electric energy has increased. The construction and technical transformation tasks of transmission lines of various voltage levels continue to grow. With the vertical and horizontal development of domestic high-speed rail lines, the frequency of construction of transmission lines crossing high-speed rails has continued to increase. How to ensure people's livelihood and social stability during the construction process is an important challenge faced by the construction of transmission lines crossing high-speed rail lines. High safety requirements, difficult approval, and short operation time are the main characteristics of the construction of crossing high-speed rail lines. The general skylight operation time is from 0:00 to 4:00 in the morning. Considering the power outage after the last train of high-speed rail operation and the maintenance work before the first train, the actual effective operation time is less than three hours. Combined with objective conditions such as complex transmission line construction technology and uncontrollable weather factors, it generally takes several days to complete the construction of crossing high-speed rail. This process brings severe tests to the aerial work platform for auxiliary operations during construction.

[0003] High-speed railways generally have special scenarios and requirements such as high span height, short span window period, and restoration to the original state during the non-window period. The commonly used high-speed railway span construction method is to use a mobile spanning frame, which is mainly achieved by installing a special connecting frame on the main arm of the crane, installing the mobile spanning frame on the truck crane boom, and relying on the freely movable and retractable truck crane platform to lift and rotate the spanning frame. The hole sizes of the mobile spanning frame are all the same, but in order to adapt to the installation hole sizes of different truck crane booms, the current practice is to make a connecting frame with corresponding hole size specifications for each model of crane. Connecting frames of different sizes and specifications cannot be used universally, which increases the manufacturing cost. This connecting frame method also places high demands on the dimensional measurement accuracy of the crane installation holes. If the truck crane installation is replaced or the installation hole is slightly deformed, the difficulty of installation at the construction site will increase exponentially. Summary of the invention

[0004] The technical problem to be solved and the technical task proposed by the present invention are to improve and perfect the existing technical solutions, and provide an aerial work platform connecting frame with adjustable spacing, so as to reduce the difficulty of installation between the crane jib and improve the versatility. To this end, the present invention adopts the following technical solutions.

[0005] A connecting frame for an aerial work platform with adjustable spacing includes a connecting frame body, the connecting frame body is arranged horizontally on the left and right sides, the left side of the connecting frame body is a connecting side connected to the aerial work platform, and the right side of the connecting frame body is a connecting side connected to the crane boom, and the right side of the connecting frame body is connected to four latch seat spacing adjustment devices distributed at the four corners of a rectangle, and each of the four latch seat spacing adjustment devices is provided with a boom latch connection seat, and the four latch seat spacing adjustment devices include a first latch seat spacing adjustment device and a second latch seat spacing adjustment device connected to the front and rear sides of the upper end of the connecting frame body, a third latch seat spacing adjustment device and a fourth latch seat spacing adjustment device connected to the front and rear sides of the lower end of the connecting frame body, the four boom latch connection seats are provided with connecting pin holes for connecting to the crane boom, the axes of the four connecting pin holes are all vertical, and the first latch seat spacing adjustment device The distance adjustment device and the second pin seat spacing adjustment device are provided with an axial spacing adjustment structure for adjusting the vertical position of the pick rod pin connection seat, and the four pin seat spacing adjustment devices are provided with a pin hole spacing adjustment structure for adjusting the spacing between the two connecting pin holes on the front and rear sides; the connecting frame main body is provided with an angle adjustment device, and the angle adjustment device includes two hydraulic cylinders arranged at the lower end of the connecting frame main body according to the front and rear positions, and the left ends of the two hydraulic cylinders are each provided with a hydraulic cylinder fixing plate for rotatably connecting to the connecting surface of the aerial work platform, and the hydraulic cylinder fixing plate is provided with connecting holes, and the upper left end of the connecting frame main body is provided with two connecting frame fixing plates for rotatably connecting to the connecting surface of the aerial work platform, and the connecting frame fixing plate 15 is provided with connecting holes, and the four connecting holes are distributed in a rectangular shape, and the right ends of the two hydraulic cylinders are connected to the hydraulic cylinder connecting seat arranged at the lower end of the connecting frame main body. The device is connected between the aerial work platform and the crane boom, and the pitch angle adjustment of the aerial work platform is achieved through the telescopic adjustment of the hydraulic cylinder to facilitate the operation. The vertical and horizontal spacings of the connecting pin holes between the four pin seat spacing adjustment devices are adjusted through the axial spacing adjustment structure and the pin hole spacing adjustment structure to adapt to the spacing specifications of the mounting holes on the booms of different cranes. The versatility of the connecting frame can be easily achieved, and there is no need to manufacture connecting frames of different specifications, which effectively reduces the manufacturing cost. It can also be easily installed when the measurement of the mounting hole position of the crane boom is inaccurate or slightly deformed, effectively reducing the difficulty of installation.

[0006] As a preferred technical means: the first latch seat spacing adjustment device and the second latch seat spacing adjustment device both include a pick rod latch connection seat and a long pin shaft, the long pin shaft vertically passes through the connection hole of the long pin shaft seat, the long pin shaft seat is connected and fixed to the right side of the connecting frame body, the pick rod latch connection seat is detachably rotatably connected to the long pin shaft through the pin shaft hole, and can be axially moved and fixed on the long pin shaft to form an axial spacing adjustment structure. By changing the axial position of the pick rod latch connection seat of the first latch seat spacing adjustment device and the second latch seat spacing adjustment device on the long pin shaft and fixing it, the vertical spacing of the two pick rod latch connection seats can be conveniently changed to make the spacing compatible with the size of the mounting hole in the same direction of the crane pick rod.

[0007] As a preferred technical means: the third latch seat spacing adjustment device and the fourth latch seat spacing adjustment device both include a pick rod latch connection seat and a short pin shaft, the short pin shaft vertically passes through the connection hole of the short pin shaft seat, the short pin shaft seat is connected and fixed to the right side of the connecting frame body, the pick rod latch connection seat is detachably rotatably connected to the short pin shaft through the pin shaft hole, the pin hole spacing adjustment structure includes a double-ear lifting ring, a round head screw, an adjusting nut, a slide nut and a connecting screw, the connecting screw is vertically connected to the two side ear plates of the pick rod latch connection seat, the The round-head screw is arranged horizontally, and one end of the round-head screw is provided with a round-head nut part, which is matched with the connection screw thread and is located between two side ear plates, and the screw part of the round-head screw passes through the slide nut, and the threads on both sides of the slide nut on the round-head screw are provided with adjustment nuts, and the slide nut is rotatably connected to the two earring holes of the double-ear lifting ring through the end shaft parts at both ends in the vertical direction, and the double-ear lifting ring is connected with the long pin shaft or the short pin shaft through the pin shaft hole arranged thereon, and a connection positioning structure is provided between the double-ear lifting ring and the connecting frame body to prevent it from rotating around the long pin shaft or the short pin shaft. The structure can make the round-head screw move axially by rotating the adjustment nut, thereby driving the swing of the pull rod plug connection seat, and changing the connection pin hole spacing of the two pull rod plug connection seats in the horizontal direction so that the spacing is adapted to the size of the installation hole in the same direction of the crane pull rod.

[0008] As a preferred technical means: the main body of the connecting frame is formed by welding a plurality of main square tubes to form a frame structure which is triangular in front and rear side views and rectangular in other views, and a plurality of oblique reinforcing square tubes and triangular reinforcing ribs are provided on the frame. The main frame is formed by welding square tubes, which uses less material, is easy to purchase square tube profiles, has a simple structure, high strength, and is easy to manufacture. The structural reinforcement of the square tubes and triangular reinforcing ribs can better ensure the structural strength of the connecting frame.

[0009] As a preferred technical means: the double-ear hanging ring is matched with the main square tube through the square notch at the corner to form a connection positioning structure, which can facilitate installation and positioning matching.

[0010] As a preferred technical means: the long pin shaft seat includes 3 connecting seat blocks, the 3 connecting seat blocks are vertically connected and fixed to the connecting frame body at linear equal intervals, the long pin shaft vertically passes through the long pin shaft holes of the 3 connecting seat blocks, the short pin shaft seat includes 2 connecting seat blocks arranged vertically, the short pin shaft vertically passes through the short pin shaft holes of the 2 connecting seat blocks, and the pick rod plug connecting seat is axially fixed to the long pin shaft or the short pin shaft through a detachable fixing buckle. The connection structure between the long pin shaft and the long pin shaft seat is effectively realized, and the position change of the pick rod plug connecting seat on the long pin shaft is convenient. Since the short pin shaft seat is not used for axial spacing adjustment, a shorter short pin shaft can be used, and correspondingly only 2 connecting seat blocks are needed to connect the short pin shaft.

[0011] As a preferred technical means: the pick rod latch connection seat includes a double-ear pick rod connection plate portion and a double-ear pin shaft connection plate portion, the double-ear pick rod connection plate portion and the double-ear pin shaft connection plate portion are reversely connected to a fixed plate, a reinforcing plate is fixed between the double-ear pick rod connection plate portion or the double-ear pin shaft connection plate portion and the fixed plate, and the two side ear plates are respectively fixed to the side surfaces of the double-ear pick rod connection plate portion. The pick rod latch connection seat has a simple structure and can be manufactured by plate welding, which is convenient to manufacture and low in cost.

[0012] As a preferred technical means: the described pick rod latch connection seat is divided into a long axis pick rod latch connection seat corresponding to the long pin shaft and a short axis pick rod latch connection seat corresponding to the short pin shaft, and the double-ear pick rod connection plate portion and the double-ear pin shaft connection plate portion of the described long axis pick rod latch connection seat are arranged in parallel and staggered. This structure enables the double-ear pin shaft connection plate portion to avoid position interference when the double-ear pick rod connection plate portion overlaps with the connection seat block in the middle of the long pin shaft seat due to the need for spacing adjustment.

[0013] As a preferred technical means: the double-ear hanging ring includes two double-ear plates and three connecting plates, the two double-ear plates are arranged in parallel, and the three connecting plates are respectively fixed to the three sides between the two double-ear plates. It can be conveniently manufactured by welding of sheet materials, and the manufacturing is convenient and low in cost.

[0014] As a preferred technical means: the long pin shaft, the short pin shaft and the connecting screw are all provided with anti-drop holes, and a detachable anti-drop pin is provided on the anti-drop hole. By providing the anti-drop pin, the long pin shaft, the short pin shaft or the connecting screw shaft is prevented from axially disengaging.

[0015] Beneficial effects: The device is connected between the aerial work platform and the crane boom, and the pitch angle of the aerial work platform can be adjusted through the telescopic adjustment of the hydraulic cylinder to facilitate operation. The vertical and horizontal spacing of the connecting pin holes between the four pin seat spacing adjustment devices are adjusted through the axial spacing adjustment structure and the pin hole spacing adjustment structure to adapt to the spacing specifications of the mounting holes on the booms of different cranes. The universality of the connecting frame can be easily achieved, and there is no need to manufacture connecting frames of different specifications, which effectively reduces the manufacturing cost. It can also be easily installed when the installation hole position of the crane boom is inaccurately measured or slightly deformed, effectively reducing the difficulty of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 The present invention Figure 1 Enlarged schematic diagram of part A in the middle.

[0018] Figure 3 The present invention Figure 1 Enlarged schematic diagram of part B in the middle.

[0019] Figure 4 It is a schematic diagram of the latch connection seat of the pick rod in the present invention.

[0020] Figure 5 It is a schematic diagram of a double-ear hanging ring in the present invention.

[0021] Figure 6 It is a schematic diagram of the connecting frame body in the present invention.

[0022] In the figure: 1, connecting frame body; 2, pick rod pin connection seat; 3, hydraulic cylinder; 4, hydraulic cylinder connection seat; 5, long pin shaft; 6, short pin shaft; 7, double ear lifting ring; 8, round head screw; 9, adjusting nut; 10, slideway nut; 11, connecting screw; 12, long pin shaft seat; 13, short pin shaft seat; 14, hydraulic cylinder fixing plate; 15, connecting frame fixing plate; 101, main body square tube; 102, reinforced square tube; 103, triangular reinforcing rib plate; 201, side ear plate; 202, double ear pick rod connection plate part; 203, double ear pin shaft connection plate part; 204, fixing plate; 205, reinforcing plate; 206, connecting pin hole; 2a, long axis pick rod pin connection seat; 2b, short axis pick rod pin connection seat; 701, double ear plate; 702, connection plate. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 1-4As shown, a connection frame for an aerial work platform with adjustable spacing includes a connection frame body 1, the connection frame body 1 is horizontally arranged left and right, the left side of the connection frame body 1 is a connection side connected to the aerial work platform, the right side of the connection frame body 1 is a connection side connected to the crane boom, and the right side of the connection frame body 1 is connected with 4 latch seat spacing adjustment devices distributed at the four corners of a rectangle, the 4 latch seat spacing adjustment devices are symmetrically arranged front to back, and a boom bolt connection seat 2 is provided on each of the 4 latch seat spacing adjustment devices, the 4 latch seat spacing adjustment devices include a first latch seat spacing adjustment device and a second latch seat spacing adjustment device connected to the front and rear sides of the upper end of the connection frame body 1, a third latch seat spacing adjustment device and a fourth latch seat spacing adjustment device connected to the front and rear sides of the lower end of the connection frame body 1, the 4 boom bolt connection seats 2 are provided with connecting pin holes 206 for connecting to the crane boom, and the 4 connection The axial directions of the pin holes 206 are both vertical. The first pin seat spacing adjustment device and the second pin seat spacing adjustment device are provided with an axial spacing adjustment structure for adjusting the vertical position of the pull rod pin connecting seat 2. The four pin seat spacing adjustment devices are provided with a pin hole spacing adjustment structure for adjusting the spacing between the two connecting pin holes 206 on the front and rear sides. The angle adjustment device includes two hydraulic cylinders 3 arranged at the lower end of the connecting frame body 1 according to the front and rear positions. The left ends of the two hydraulic cylinders 3 are each provided with a hydraulic cylinder fixing plate 14 for rotatably connecting to the connecting surface of the aerial work platform. The hydraulic cylinder fixing plate 14 is provided with connecting holes. The upper left end of the connecting frame body 1 is provided with two connecting frame fixing plates 15 for rotatably connecting to the connecting surface of the aerial work platform. The connecting frame fixing plate 15 is provided with connecting holes. The four connecting holes are distributed in a rectangular shape. The right ends of the two hydraulic cylinders 3 are connected to the hydraulic cylinder connecting seat 4 arranged at the lower end of the connecting frame body 1.

[0025] In order to achieve axial spacing adjustment, the first latch seat spacing adjustment device and the second latch seat spacing adjustment device both include a pick rod latch connection seat 2 and a long pin shaft 5, the long pin shaft 5 vertically passes through the connection hole of the long pin shaft seat 12, the long pin shaft seat 12 is connected and fixed to the right side of the connecting frame body 1, and the pick rod latch connection seat 2 is detachably rotatably connected to the long pin shaft 5 through the pin shaft hole, and can be axially moved and fixed on the long pin shaft 5 to form an axial spacing adjustment structure. By changing the axial position of the pick rod latch connection seat 2 of the first latch seat spacing adjustment device and the second latch seat spacing adjustment device on the long pin shaft 5 and fixing it, the vertical spacing of the two pick rod latch connection seats 2 can be conveniently changed to make the spacing compatible with the size of the mounting hole in the same direction of the crane pick rod.

[0026] In order to adjust the horizontal spacing of the pick rod pin connection seat 2, the third pin seat spacing adjustment device and the fourth pin seat spacing adjustment device both include a pick rod pin connection seat 2 and a short pin shaft 6, the short pin shaft 6 is vertically passed through the connecting hole of the short pin shaft seat 13, the short pin shaft seat 13 is connected and fixed to the right side of the connecting frame body 1, the pick rod pin connection seat 2 is detachably rotatably connected to the short pin shaft 6 through the pin shaft hole, and the pin hole spacing adjustment structure includes a double-ear lifting ring 7, a round head screw 8, an adjusting nut 9, a slide nut 10 and a connecting screw 11, the connecting screw 11 is vertically connected to the two side ear plates 201 of the pick rod pin connection seat 2, and the round head screw The rod 8 is arranged horizontally, and a round head screw 8 is provided with a round head nut part at one end, and the round head nut part is threadedly connected with the connecting screw 11 and is located between the two side ear plates 201. The screw part of the round head screw 8 passes through the slide nut 10, and the two sides of the slide nut 10 on the round head screw 8 are threadedly provided with an adjusting nut 9, and the slide nut 10 is rotatably connected to the two earring holes of the double ear lifting ring 7 through the end shaft parts at both ends in the vertical direction, and the double ear lifting ring 7 is connected with the long pin 5 or the short pin 6 through the pin shaft hole arranged thereon, and a connecting positioning structure is arranged between the double ear lifting ring 7 and the connecting frame body 1 to prevent it from rotating around the long pin 5 or the short pin 6. This structure can make the round head screw 8 move axially by rotating the adjusting nut 9, thereby driving the swing of the pull rod plug connection seat 2, and changing the distance between the connecting pin holes 206 of the two pull rod plug connection seats 2 in the horizontal direction so that the distance is adapted to the size of the mounting hole in the same direction of the crane pull rod.

[0027] In order to facilitate manufacturing and ensure structural strength, Figure 6 As shown, the connecting frame body 1 is formed by welding a plurality of main body square tubes 101 to form a frame structure which is triangular in front and rear side views and rectangular in other views, and the frame is provided with a plurality of oblique reinforcing square tubes 102 and triangular reinforcing ribs 103. The main frame is formed by welding square tubes, which uses less material, is easy to purchase square tube profiles, has a simple structure, high strength, and is easy to manufacture. The structural reinforcement of the square tubes 102 and the triangular reinforcing ribs 103 can better ensure the structural strength of the connecting frame.

[0028] In order to realize the connection and positioning between the double-ear hanging ring 7 and the connecting frame body 1, the double-ear hanging ring 7 matches with the main body square tube 101 through the square notch at its corner to form a connection and positioning structure, and the double-ear hanging ring 7 located at the third bolt seat spacing adjustment device and the fourth bolt seat spacing adjustment device is welded and fixed to the main body square tube 101. It can conveniently realize the installation and positioning matching.

[0029] In order to facilitate the position change of the pick rod plug connection seat 2 on the long pin shaft 5, the long pin shaft seat 12 includes 3 connection seat blocks, which are vertically connected and fixed to the connection frame body 1 at linear equal intervals, and the long pin shaft 5 vertically passes through the long pin shaft 5 holes of the 3 connection seat blocks, and the short pin shaft seat 13 includes 2 connection seat blocks arranged vertically, and the short pin shaft 6 vertically passes through the short pin shaft 6 holes of the 2 connection seat blocks. The pick rod plug connection seat 2 is axially fixed to the long pin shaft 5 or the short pin shaft 6 through a detachable fixing buckle. The connection structure between the pin shaft and the pin shaft seat is effectively realized, and the position change of the pick rod plug connection seat 2 on the long pin shaft 5 is convenient. Since the short pin shaft seat 13 is not used for axial spacing adjustment, a shorter short pin shaft 6 can be used, and correspondingly only two connection seat blocks are needed to connect the short pin shaft 6.

[0030] In order to facilitate the manufacture of the pick rod latch connection seat 2, as Figure 4 As shown, the pick rod latch connection seat 2 includes a double-ear pick rod connection plate portion 202 and a double-ear pin shaft connection plate portion 203, the double-ear pick rod connection plate portion 202 and the double-ear pin shaft connection plate portion 203 are reversely connected to a fixed plate 204, a reinforcing plate 205 is fixed between the double-ear pick rod connection plate portion 202 or the double-ear pin shaft connection plate portion 203 and the fixed plate 204, and two side ear plates 201 are respectively fixed to the side surfaces of the double-ear pick rod connection plate portion 202. The pick rod latch connection seat 2 has a simple structure and can be manufactured by welding of sheet materials, which is convenient to manufacture and low in cost.

[0031] In order to prevent the position interference between the pick rod plug connection seat 2 and the connection seat block in the middle of the long pin shaft seat 12 when adjusting the axial position, as shown in FIG. Figure 2 , 3 As shown, the pick rod latch connection seat 2 is divided into a long axis pick rod latch connection seat 2a corresponding to the long pin shaft 5 and a short axis pick rod latch connection seat 2b corresponding to the short pin shaft 6, and the double-ear pick rod connection plate portion 202 and the double-ear pin shaft connection plate portion 203 of the long axis pick rod latch connection seat 2a are arranged in parallel and staggered. This structure allows the double-ear pick rod connection plate portion 202 to overlap with the connection seat block in the middle of the long pin shaft seat 12 when the spacing adjustment needs to be adjusted, and the double-ear pin shaft connection plate portion 203 can avoid it and no position interference occurs.

[0032] For the convenience of manufacturing the double ear hanging ring 7, as Figure 5 As shown, the double-ear hanging ring 7 includes two double-ear plates 701 and three connecting plates 702. The two double-ear plates 701 are arranged in parallel, and the three connecting plates 702 are respectively fixed to the three sides between the two double-ear plates 701. It can be conveniently manufactured by welding sheet materials, and the manufacturing is convenient and low in cost.

[0033] In order to prevent the long pin shaft 5, the short pin shaft 6 or the connecting screw 11 from axially disengaging, the long pin shaft 5, the short pin shaft 6 and the connecting screw 11 are all provided with anti-drop holes, and detachable anti-drop pins are provided on the anti-drop holes. By providing the anti-drop pins, the long pin shaft 5, the short pin shaft 6 or the connecting screw 11 are prevented from axially disengaging.

[0034] This device is connected and fixed with the mounting holes of the crane's jib through the connection pin holes 206 on the four jib pin connection seats 2, and is connected and fixed with the aerial work platform through the connection holes on the two connection frame bodies 1 and the connection holes on the two hydraulic cylinders 3. The connection holes on the two connection frame bodies 1 are arranged on the two platform fixing plates, which are welded and fixed to the connection frame bodies 1, and the connection holes on the two hydraulic cylinders 3 are arranged on the hydraulic cylinder fixing plates 14 at the left ends of the two hydraulic cylinders 3, which are welded and fixed to the hydraulic cylinder fixing plates 14 and the hydraulic cylinders 3. The crane's jib is usually equipped with four mounting holes for mounting the jib. When viewed horizontally, the four mounting holes are connected in sequence to form a rectangle. The connection pin holes 206 on the four jib pin connection seats 2 can be directly connected with the four mounting holes of the crane's jib. Before installing the two, first measure the size between the four mounting holes on the crane boom, then adjust the relative positions of the four boom pin connection seats 2 on the connecting frame according to the size to make them correspond, and then directly connect the device to the mounting holes on the crane boom through the boom pin connection seat 2 using a pin.

[0035] During adjustment, the axial spacing and horizontal spacing of the connecting pin holes 206 on the four crane grab bar pin connection seats 2 are adjusted according to the hole spacing dimensions of the four mounting holes on the crane grab bar obtained by measurement.

[0036] The first step is to adjust the axial spacing. The axial adjustment is performed around the two long-axis pick rod plug connection seats 2a matched with the long pin shaft 5. First, starting from the connection pin hole 206 of the short-axis pick rod plug connection seat 2b matched with the short pin shaft 6, the length and hole distance of the two mounting holes in the same direction of the crane pick rod are measured along the axial direction to measure the position of the connection pin hole 206 on the long-axis pick rod plug connection seat 2a matched with the long pin shaft 5 on the same side after adjustment. When adjusting the length spacing, since the long pin shaft 5 is equipped with three connecting seat blocks, these three connecting seat blocks divide the installable position of the pick rod pin connecting seat 2 into two upper and lower areas. If the pick rod pin connecting seat 2 is moved to the adjusted position without conflicting with the position of any connecting seat blocks, the round head screw 8, adjusting nut 9, slide nut 10, connecting screw 11 and long axis pick rod pin connecting seat 2a are simultaneously moved axially along the long pin shaft 5 to the adjusted position, and the spacing between the connecting pin hole 206 position on the long axis pick rod pin connecting seat 2a and the connecting pin hole 206 position of the short axis pick rod pin connecting seat 2b on the same side and below is measured. After confirming that it is equivalent to the measured value, the long pin shaft 5 is reinserted, and the long axis pick rod pin connecting seat 2a is fixed at the current position with a fixing buckle, thereby completing the axial spacing adjustment.

[0037] Move the long-axis pull rod pin connecting seat 2a to the adjusted position. If it conflicts with the position of one of the connecting seat blocks, after removing the long pin shaft 5, it is also necessary to remove the connecting screw 11 connected to the long-axis pull rod pin connecting seat 2a, take out the two long-axis pull rod pin connecting seats 2a and vertically flip them over for installation. Since the double-ear pull rod connecting plate portion 202 and the double-ear pin shaft connecting plate portion 203 of the long-axis pull rod pin connecting seat 2a are arranged in parallel and staggered manner, the thickness difference between the connecting pin holes 206 on both sides of the long-axis pull rod pin connecting seat 2a is equivalent to the thickness of the connecting seat block, which can avoid interference with the seat block during replacement and installation, can adapt to crane pull rods of more sizes, and can be more widely used in different lifting equipment. After the long-axis pull rod pin connecting seat 2a is replaced, reinstall the connecting screw 11 to connect the long-axis pull rod pin connecting seat 2a with the round head screw 8, and then axially move the double-ear lifting ring 7, round head screw 8, adjusting nut 9, slide nut 10 and the long-axis pull rod pin connecting seat 2a along the long pin shaft 5 to the adjusted position, and measure the spacing between the connecting pin hole 206 on the long-axis pull rod pin connecting seat 2a and the short-axis pull rod pin connecting seat 2b on the same side and below. After confirming that it is equivalent to the measured value, reinsert the long pin shaft 5 and fix the long-axis pull rod pin connecting seat 2a at the current position with the fixing buckle to complete the axial spacing adjustment.

[0038] The second step is to adjust the horizontal spacing, that is, adjust the spacing between the connecting pin holes 206 of the two long-axis pull rod pin connection seats 2a and the short-axis pull rod pin connection seats 2b at the same height. Take the adjustment of the short-axis pull rod pin connection seat 2b as an example. Rotate the two adjustment nuts 9 on both sides of the slide nut 10 in the same direction clockwise or counterclockwise, drive the round-head screw 8 to pull the connecting screw 11, and the connecting screw 11 drives the short-axis pull rod pin connection seat 2b to drag and rotate around the short pin shaft 6 until the horizontal measurement of the spacing between the connecting pin holes 206 on the two short-axis pull rod pin connection seats 2b is the same as the spacing between the corresponding installation holes on the crane pull rod. When the data is confirmed to be consistent, the adjustment of the short-axis pull rod pin connection seat 2b is completed. The horizontal spacing adjustment method of the long-axis pull rod pin connection seat 2a is the same.

[0039] After completing the above spacing adjustment, use lifting equipment to lift the connecting frame, and install the four pull rod pin connecting seats 2 to the corresponding mounting holes of the crane pull rod through pins. There are certain requirements for the up and down directions during installation to ensure that the short-axis pull rod pin connecting seat 2b is located below the long-axis pull rod pin connecting seat 2a.

[0040] When adjusting the pitch angle of the aerial work platform, the aerial work platform is lifted by a crane, and the four mounting holes of the aerial work platform are fixedly installed correspondingly with the connection holes of the two connecting frame bodies 1 and the connection holes of the two hydraulic cylinders 3 through latches. During operation, the hydraulic cylinder 3 is connected to the hydraulic oil circuit to control the extension and contraction of the hydraulic cylinder 3, and the aerial work platform is rotated with the two connection holes of the connecting frame body 1 as the axis to achieve the pitch angle adjustment of the aerial work platform.

[0041] The device adjusts the pitch angle of the aerial work platform through the telescopic adjustment of the hydraulic cylinder 3 to facilitate operation, and adjusts the axial and horizontal spacing of the four connecting pin holes 206 through the axial spacing adjustment structure and the pin hole spacing adjustment structure to adapt to the spacing specifications of the mounting holes on the crane booms of different cranes. The versatility of the connecting frame can be easily achieved, and there is no need to manufacture connecting frames of different specifications, which effectively reduces the manufacturing cost. It can also be easily installed when the measurement of the mounting hole position of the crane boom is inaccurate or slightly deformed, effectively reducing the difficulty of installation.

[0042] above Figure 1-6 The aerial work platform connecting frame with adjustable spacing shown is a specific embodiment of the present invention, which has embodied the outstanding substantial features and significant progress of the present invention. According to actual use needs and under the guidance of the present invention, equivalent modifications in shape, structure, etc. can be made to it, which are all within the protection scope of this scheme.

Claims

1. A connecting frame for an aerial work platform with adjustable spacing, comprising a connecting frame body, wherein the connecting frame body is arranged horizontally on the left and right sides, the left side of the connecting frame body is a connecting side connected to the aerial work platform, and the right side of the connecting frame body is a connecting side connected to a crane boom, characterized in that: The right side of the connecting frame body is connected with 4 bolt seat spacing adjustment devices distributed at the 4 corners of a rectangle, and each of the 4 bolt seat spacing adjustment devices is provided with a pick rod bolt connecting seat. The 4 bolt seat spacing adjustment devices include a first bolt seat spacing adjustment device and a second bolt seat spacing adjustment device connected to the front and rear sides of the upper end of the connecting frame body, a third bolt seat spacing adjustment device and a fourth bolt seat spacing adjustment device connected to the front and rear sides of the lower end of the connecting frame body, and the 4 pick rod bolt connecting seats are provided with connecting pin holes for connecting with the crane pick rod, and the axial directions of the 4 connecting pin holes are all vertical. The first bolt seat spacing adjustment device and the second bolt seat spacing adjustment device are provided with axial spacing adjustment structures for adjusting the vertical position of the pick rod bolt connecting seats. Structure, the four pin seat spacing adjustment devices are each provided with a pin hole spacing adjustment structure for adjusting the spacing between the two connecting pin holes on the front and rear sides; the connecting frame body is provided with an angle adjustment device, and the angle adjustment device includes two hydraulic cylinders arranged at the lower end of the connecting frame body according to the front and rear positions, and the left ends of the two hydraulic cylinders are each provided with a hydraulic cylinder fixing plate for rotatably connecting to the connecting surface of the aerial work platform, and the hydraulic cylinder fixing plate is provided with connecting holes, and the upper left end of the connecting frame body is provided with two connecting frame fixing plates for rotatably connecting to the connecting surface of the aerial work platform, and the connecting frame fixing plate 15 is provided with connecting holes, and the four connecting holes are distributed in a rectangular shape, and the right ends of the two hydraulic cylinders are connected to the hydraulic cylinder connecting seat arranged at the lower end of the connecting frame body.

2. The aerial work platform connecting frame with adjustable spacing according to claim 1, characterized in that: The first latch seat spacing adjustment device and the second latch seat spacing adjustment device both include a pick rod latch connection seat and a long pin shaft. The long pin shaft vertically passes through the connection hole of the long pin shaft seat. The long pin shaft seat is connected and fixed to the right side of the connecting frame body. The pick rod latch connection seat is detachably rotatably connected to the long pin shaft through the pin shaft hole, and can be axially moved and fixed on the long pin shaft to form an axial spacing adjustment structure.

3. The aerial work platform connecting frame with adjustable spacing according to claim 2, characterized in that: The third latch seat spacing adjustment device and the fourth latch seat spacing adjustment device both include a pick rod latch connection seat and a short pin shaft, the short pin shaft vertically passes through the connecting hole of the short pin shaft seat, the short pin shaft seat is connected and fixed to the right side of the connecting frame body, the pick rod latch connection seat is detachably rotatably connected to the short pin shaft through the pin shaft hole, the pin hole spacing adjustment structure includes a double-ear lifting ring, a round head screw, an adjusting nut, a slide nut and a connecting screw, the connecting screw is vertically connected to the two side ear plates of the pick rod latch connection seat, the round head screw water It is arranged horizontally, and a round nut portion is provided at one end of the round-head screw, which is matched with the connecting screw thread and is located between the two side ear plates. The screw portion of the round-head screw passes through the slide nut, and the threads on both sides of the slide nut on the round-head screw are equipped with adjusting nuts. The slide nut is rotatably connected to the two earring holes of the double-ear hanging ring through the end shaft portions at both vertical ends. The double-ear hanging ring is connected to the long pin shaft or the short pin shaft through the pin shaft hole arranged thereon, and a connecting positioning structure is provided between the double-ear hanging ring and the connecting frame body to prevent it from rotating around the long pin shaft or the short pin shaft.

4. The aerial work platform connecting frame with adjustable spacing according to claim 3 is characterized in that: The connecting frame body is welded by a plurality of main square tubes to form a frame structure which is triangular in front and rear side views and rectangular in other views. The frame is provided with a plurality of oblique reinforcing square tubes and triangular reinforcing ribs.

5. The aerial work platform connecting frame with adjustable spacing according to claim 4, characterized in that: The double-ear hanging ring is matched with the main square tube through the square notch at the corner to form a connection and positioning structure.

6. The aerial work platform connecting frame with adjustable spacing according to claim 5, characterized in that: The long pin shaft seat includes three connecting seat blocks, and the three connecting seat blocks are vertically connected and fixed on the connecting frame body at linear equal intervals. The long pin shaft vertically passes through the long pin shaft holes of the three connecting seat blocks. The short pin shaft seat includes two connecting seat blocks arranged vertically, and the short pin shaft vertically passes through the short pin shaft holes of the two connecting seat blocks. The pick rod pin connecting seat is axially fixed to the long pin shaft or the short pin shaft through a detachable fixing buckle.

7. The aerial work platform connecting frame with adjustable spacing according to claim 6, characterized in that: The pick rod pin connection seat includes a double-ear pick rod connection plate portion and a double-ear pin shaft connection plate portion, the double-ear pick rod connection plate portion and the double-ear pin shaft connection plate portion are reversely connected to a fixed plate, a reinforcing plate is fixed between the double-ear pick rod connection plate portion or the double-ear pin shaft connection plate portion and the fixed plate, and the two side ear plates are respectively fixed to the side surfaces of the double-ear pick rod connection plate portion.

8. The aerial work platform connecting frame with adjustable spacing according to claim 7, characterized in that: The pick rod latch connection seat is divided into a long axis pick rod latch connection seat corresponding to the long pin shaft and a short axis pick rod latch connection seat corresponding to the short pin shaft. The double-ear pick rod connection plate part and the double-ear pin shaft connection plate part of the long axis pick rod latch connection seat are arranged in parallel and staggered manner.

9. The aerial work platform connecting frame with adjustable spacing according to claim 8, characterized in that: The double-ear hanging ring comprises two double-ear plates and three connecting plates, the two double-ear plates are arranged in parallel, and the three connecting plates are respectively fixed to the three side surfaces between the two double-ear plates.

10. The aerial work platform connecting frame with adjustable spacing according to claim 9, characterized in that: The long pin shaft, the short pin shaft and the connecting screw rod are all provided with anti-drop holes, and the anti-drop holes are provided with detachable anti-drop pins.

Images