An adjustable spacing aerial work platform connecting frame

Abstract

The application discloses a high-altitude operation platform connecting frame with adjustable spacing and relates to the field of power grid crossing high-speed rail overhead line transmission line construction equipment. When high-speed rail crossing construction is performed, a mobile crossing frame is connected with a crane grab pole through a connecting frame. Different automobile crane grab poles need to be equipped with special connecting frames with corresponding hole positions. Different size specifications of the connecting frames cannot be commonly used, which increases manufacturing cost. The application comprises four bolt seat spacing adjustment devices distributed on the connecting frame main body. The four connecting pin holes connected with the crane grab pole are adjusted in the length and width directions to realize corresponding connection of different crane grab pole mounting holes, improve commonality, and additionally, the high-altitude operation platform is adjusted in the pitch angle through two hydraulic cylinders. The commonality of the connecting frame can be conveniently realized, different specifications of the connecting frames do not need to be manufactured, manufacturing cost is effectively reduced, the connecting frame can be conveniently installed when measurement inaccuracy or slight deformation occurs in the crane grab pole mounting hole position, and installation difficulty is reduced.

Description

Technical Field

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

[0002] Construction across high-speed rail lines is characterized by high safety requirements, challenging approval processes, and short operating times. The typical operating window is from midnight to 4:00 a.m. Taking into account power outages after the last train and maintenance work before the first train, the actual effective operating time is less than three hours. Combined with the complex construction process for transmission lines and uncontrollable weather conditions, completing construction across high-speed rail lines typically requires several days, placing severe demands on the aerial work platforms used for auxiliary operations during construction.

[0003] High-speed railways generally have special scenarios and requirements such as high span heights, short span windows, and restoration to the original state during non-window periods. The currently commonly used method for high-speed railway span construction is to use a mobile spanning frame, which is mainly achieved by installing a special connecting frame on the crane's main arm, installing the mobile spanning frame on the truck crane's boom, and relying on the freely movable and retractable truck crane platform to lift and rotate the spanning frame into place. The hole sizes of the mobile spanning frame are all consistent, 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 interchangeably, which increases manufacturing costs. This connecting frame approach also places high demands on the dimensional measurement accuracy of the crane installation holes. If the truck crane installation is changed 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 to reduce the difficulty of installation between the connecting frame and the crane mast and improve versatility. To this end, the present invention adopts the following technical solutions.

[0005] The lifting mechanism is a pair of fixedly mounted on-site lifting platforms, and the fixing mechanism comprises a lifting mechanism, wherein the fixing mechanism comprises a lifting mechanism, a lifting mechanism, and a lifting mechanism. The fixing mechanism comprises a lifting mechanism, a lifting mechanism, and a lifting mechanism. The fixing mechanism comprises a lifting mechanism, a lifting mechanism, and a lifting mechanism. The fixing mechanism comprises a lifting mechanism, a lifting mechanism, and a lifting mechanism. 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 connecting seat, and the four pin seat spacing adjustment devices are provided with a pin hole spacing adjustment structure for adjusting the spacing of 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 connected to the connecting surface of the aerial work platform, and the hydraulic cylinder fixing plate is provided with a connecting hole. The upper left end of the connecting frame main body is provided with two connecting frame fixing plates for rotatably connected to the connecting surface of the aerial work platform, and the connecting frame fixing plate 15 is provided with a connecting hole. The four connecting holes are distributed in a rectangular manner, and the right ends of the two hydraulic cylinders are connected to the hydraulic cylinder connecting seat provided at the lower end of the connecting frame main body. This device is connected between the aerial work platform and the crane boom. 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 different crane booms. 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 manufacturing costs. 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.

[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 the 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 hanging 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, with a round-head nut portion at one end. The round-head nut portion is threadedly connected to the connecting screw and located between the two side lugs. The screw portion of the round-head screw passes through a slide nut. Adjustment nuts are provided on both sides of the round-head screw threadedly connected to the slide nut. The slide nut is rotatably connected to the two earring holes of the double-eared lifting ring via end shafts at both vertical ends. The double-eared lifting ring is connected to the long or short pin through the pin holes provided therein. A connecting and positioning structure is provided between the double-eared lifting ring and the connecting frame body to prevent it from rotating around the long or short pin. This structure can cause the round-head screw to move axially by rotating the adjustment nut, thereby driving the swing of the grab bar pin connector, changing the spacing between the connecting pin holes of the two horizontal grab bar pin connectors to adapt this spacing to the size of the mounting holes in the crane grab bar in the same direction.

[0008] As a preferred technical approach, the connecting frame body is constructed from multiple square tubes welded together to form a triangular frame structure viewed from the front and rear sides, and rectangular from all other directions. The frame is equipped with multiple oblique reinforcing square tubes and triangular reinforcing ribs. This welding of square tubes into the main frame reduces material consumption, facilitates the procurement of square tube profiles, and results in a simple structure, high strength, and easy manufacturing. The structural reinforcement of the square tubes and triangular reinforcing ribs further ensures 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 its corner to form a connection and positioning structure, which can facilitate installation and positioning.

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

[0011] As a preferred technical means, the described pick rod latch connector includes a double-ear pick rod connecting plate portion and a double-ear pin connecting plate portion, which are connected in opposite directions to a fixed plate. A reinforcing plate is fixed between the double-ear pick rod connecting plate portion or the double-ear pin connecting plate portion and the fixed plate. The two side ear plates are respectively fixed to the side surfaces of the double-ear pick rod connecting plate portion. The pick rod latch connector has a simple structure and can be manufactured by welding sheet metal, which is convenient and low-cost.

[0012] As a preferred technical measure, the described lever latch connector is divided into a long-axis lever latch connector corresponding to the long pin and a short-axis lever latch connector corresponding to the short pin. The long-axis lever latch connector has a double-ear lever connecting plate portion and a double-ear pin connecting plate portion arranged in parallel and staggered positions. This structure allows the double-ear pin connecting plate portion to avoid positional interference when the double-ear lever connecting plate portion overlaps with the central connecting block of the long pin connector 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 sheet metal, which is convenient and low-cost.

[0014] As a preferred technical means, the long pin, short pin and connecting screw 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, short pin or connecting screw are prevented from axially detaching.

[0015] Beneficial effects: This 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 different crane booms. 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 manufacturing costs. 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 structural schematic diagram of the present invention.

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

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

[0019] Figure 4 It is a schematic diagram of the pick rod latch connection seat 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. Pull rod pin connecting seat; 3. Hydraulic cylinder; 4. Hydraulic cylinder connecting seat; 5. Long pin; 6. Short pin; 7. Double-ear lifting eye; 8. Round head screw; 9. Adjusting nut; 10. Slide nut; 11. Connecting screw; 12. Long pin seat; 13. Short pin seat; 14. Hydraulic cylinder fixing plate; 15. Connecting frame fixing plate; 101. Main body square tube; 102. Reinforced square tube; 103. Triangular reinforcing rib; 201. Side ear plate; 202. Double-ear pull rod connecting plate; 203. Double-ear pin connecting plate; 204. Fixed plate; 205. Reinforcement plate; 206. Connecting pin hole; 2a. Long axis pull rod pin connecting seat; 2b. Short axis pull rod pin connecting seat; 701. Double-ear plate; 702. Connecting plate. DETAILED DESCRIPTION

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

[0024] like Figure 1-4As shown, a connecting frame for an aerial work platform with adjustable spacing includes a connecting frame body 1, the connecting frame body 1 is horizontally arranged left and right, the left side of the connecting frame body 1 is the connecting side connected to the aerial work platform, and the right side of the connecting frame body 1 is the connecting side connected to the crane boom, and the right side of the connecting frame body 1 is connected with 4 latch seat spacing adjustment devices distributed at the 4 corners of a rectangle, and the 4 latch seat spacing adjustment devices are symmetrically arranged front to back, and each of the 4 latch seat spacing adjustment devices is provided with a boom latch connection seat 2, and 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 positions of the upper end of the connecting frame body 1, a third latch seat spacing adjustment device and a fourth latch seat spacing adjustment device connected to the front and rear positions of the lower end of the connecting frame body 1, the 4 boom latch connection seats 2 are provided with connecting pin holes 206 for connecting to the crane boom, and the 4 connecting 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 pick rod pin connecting seat 2. The four pin seat spacing adjustment devices are all 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 main 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 a connecting hole. The upper left end of the connecting frame main 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 a connecting hole. 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 provided at the lower end of the connecting frame main 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 is vertically inserted into 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. 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 between 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. The pin hole spacing adjustment structure includes a double-ear hanging 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. The round head screw The rod 8 is arranged horizontally, and a round head screw 8 is provided with a round head nut portion at one end. The round head nut portion is threadedly connected to the connecting screw 11 and is located between the two side ear plates 201. The screw portion of the round head screw 8 passes through the slide nut 10. Adjustment nuts 9 are threadedly provided on both sides of the round head screw 8 on the slide nut 10. The slide nut 10 is rotatably connected to the two earring holes of the double ear ring 7 through the end shaft portions at both vertical ends. The double ear ring 7 is connected to the long pin 5 or short pin 6 through the pin holes provided therein. A connection and positioning structure is provided between the double ear ring 7 and the connecting frame body 1 to prevent it from rotating around the long pin 5 or short pin 6. This structure can cause the round head screw 8 to move axially by rotating the adjustment nut 9, thereby driving the swing of the pull rod pin connector 2, changing the spacing between the connecting pin holes 206 of the two horizontal pull rod pin connectors 2 to adapt the spacing to the size of the mounting holes in the same direction of the crane pull rod.

[0027] In order to facilitate manufacturing and ensure structural strength, such as Figure 6 As shown, the connecting frame body 1 is welded from multiple main square tubes 101 to form a triangular frame structure when viewed from the front and rear sides, and rectangular when viewed from the rest of the way. The frame is equipped with multiple 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, and has a simple structure, high strength, and is easy to manufacture. The structural reinforcement of the reinforcing square tubes 102 and triangular reinforcing ribs 103 further ensures the structural strength of the connecting frame.

[0028] In order to achieve the connection and positioning between the double-ear hanging ring 7 and the connecting frame body 1, the double-ear hanging ring 7 matches the main body square tube 101 through the square notch at its corner to form a connection and positioning structure. The double-ear hanging ring 7 located at the third and fourth latch seat spacing adjustment devices is welded to the main body square tube 101. This can facilitate installation and positioning.

[0029] In order to facilitate the position change of the pick rod pin 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 equal linear intervals. The long pin shaft 5 vertically passes through the long pin shaft 5 holes of the 3 connection seat blocks. 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 pin 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 pin 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. Correspondingly, only 2 connection seat blocks are needed to connect the short pin shaft 6.

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

[0031] In order to prevent the position interference between the connecting seat block in the middle of the long pin shaft seat 12 and the connecting seat 2 of the pick rod plug connector seat 2 during axial position adjustment, as shown in FIG. Figure 2 、 3 As shown, the pick rod latch connector 2 is divided into a long-axis pick rod latch connector 2a corresponding to the long pin 5 and a short-axis pick rod latch connector 2b corresponding to the short pin 6. The two-ear pick rod connecting plate portion 202 and the two-ear pin connecting plate portion 203 of the long-axis pick rod latch connector 2a are arranged in parallel and staggered positions. This structure allows the two-ear pin connecting plate portion 203 to avoid position interference when the two-ear pick rod connecting plate portion 202 overlaps with the connecting seat block in the middle of the long pin seat 12 for spacing adjustment.

[0032] For the convenience of manufacturing 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 metal, and the manufacturing cost is convenient and low.

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

[0034] This device is fixed to the mounting holes of the crane's jib via pins through the connecting pin holes 206 on the four jib latch connectors 2, and is fixed to the aerial work platform via pins through the connecting holes on the two connecting frame bodies 1 and the connecting holes on the two hydraulic cylinders 3. The connecting holes on the two connecting frame bodies 1 are provided on the two platform fixing plates, which are welded and fixed to the connecting frame bodies 1. The connecting holes on the two hydraulic cylinders 3 are provided 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 a jib. When viewed horizontally, the four mounting holes are connected in sequence to form a rectangle. The connecting pin holes 206 on the four jib latch connectors 2 can be directly connected to 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 connectors 2 on the connecting frame according to the size so that they correspond, and then directly connect the device to the mounting holes on the crane boom through the boom pin connector 2 using pins.

[0035] During adjustment, the axial and horizontal spacings of the connecting pin holes 206 on the four crane grab bar pin connection seats 2 are adjusted based on the hole spacings 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 jib pin connectors 2a that match the long pin shaft 5. First, starting from the connecting pin hole 206 of the short-axis jib pin connector 2b that matches the short pin shaft 6, the axial length and hole spacing of the two mounting holes in the same direction of the crane jib are measured to determine the adjusted position of the connecting pin hole 206 on the long-axis jib pin connector 2a that matches the long pin shaft 5 on the same side. 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 moved axially along the long pin shaft 5 to the adjusted position at the same time, 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 in 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 and reinstall them. 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 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 move the double-ear lifting ring 7, round head screw 8, adjusting nut 9, slide nut 10 and long-axis pull rod pin connecting seat 2a axially 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 consistent with the measured value, reinsert the long pin shaft 5 and fix the long-axis pull rod pin connecting seat 2a in 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 pick rod pin connectors 2a and the short-axis pick rod pin connectors 2b at the same height. The following takes the adjustment of the short-axis pick rod pin connector 2b as an example. Rotate the two adjusting 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 pick rod pin connector 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 pick rod pin connectors 2b is the same as the spacing between the corresponding mounting holes on the crane pick rod. When the data is confirmed to be consistent, the adjustment of the short-axis pick rod pin connector 2b is completed. The horizontal spacing adjustment method of the long-axis pick rod pin connector 2a is the same.

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

[0040] To adjust the aerial work platform's pitch angle, hoist the platform with a crane and secure it to its four mounting holes, two connecting holes in the main body 1, and two connecting holes in the hydraulic cylinders 3 using latches. During operation, connect the hydraulic oil circuit to the hydraulic cylinders 3 to control their extension and retraction. The aerial work platform is then rotated about the two connecting holes in the main body 1 to adjust its pitch angle.

[0041] This 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 different crane booms. It can easily achieve the versatility of the connecting frame, eliminates the need to manufacture connecting frames of different specifications, effectively reduces manufacturing costs, and facilitates installation even when the mounting hole position of the crane boom is inaccurately measured 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 scope of protection of this scheme.

Claims

1. A connecting frame for an aerial work platform with adjustable spacing, comprising a connecting frame body, the connecting frame body being arranged transversely to the left and right, the left side of the connecting frame body being connected to the aerial work platform, and the right side of the connecting frame body being connected to the crane boom, characterized in that: 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 pick rod latch connection seat. 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 positions 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 positions of the lower end of the connecting frame body, and the four pick rod latch connection seats are provided with connecting pin holes for connecting with the crane pick rod, and the axial directions of the four connecting pin holes are all vertical. The first latch seat spacing adjustment device and the second latch seat spacing adjustment device are provided with axial spacing adjustment devices for adjusting the vertical position of the pick rod latch connection seat. 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 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 a connecting hole, 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 is provided with a connecting hole, and the four connecting holes are distributed in a rectangular manner, and the right ends of the two hydraulic cylinders are connected to the hydraulic cylinder connecting seat provided at the lower end of the connecting frame main body; 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; The pin hole spacing adjustment structure comprises a double-ear hanging ring, a round head screw, an adjustment nut, a slide nut and a connecting screw.

2. The aerial work platform connecting frame with adjustable spacing according to claim 1, 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 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 rotatable and connected to the short pin shaft through the pin shaft hole, the connecting screw is vertically connected to the two side ear plates of the pick rod latch connection seat, the round head screw is horizontally arranged, and a round head nut portion is provided at one end of the round head screw. The head nut portion is matched with the threaded connection of the connecting screw and is located between the two side ear plates. The screw portion of the round head screw passes through the slide nut. 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 provided thereon. A connection 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.

3. The aerial work platform connecting frame with adjustable spacing according to claim 2, characterized in that: The connecting frame body is welded from a plurality of main square tubes to form a frame structure which is triangular when viewed from the front and rear sides and rectangular when viewed from the rest. The frame is provided with a plurality of oblique reinforcing square tubes and triangular reinforcing ribs.

4. The aerial work platform connecting frame with adjustable spacing according to claim 3, characterized in that: The double-ear hanging ring is matched with the main square tube through the square notches at the corners to form a connection and positioning structure.

5. The aerial work platform connecting frame with adjustable spacing according to claim 4, characterized in that: The long pin shaft seat includes 3 connecting seat blocks, and the 3 connecting seat blocks are vertically connected and fixed on the connecting frame body at 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, and the short pin shaft vertically passes through the short pin shaft holes of the 2 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.

6. The aerial work platform connecting frame with adjustable spacing according to claim 5, characterized in that: The grab rod pin connection seat includes a double-ear grab rod connection plate portion and a double-ear pin shaft connection plate portion, the double-ear grab 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 grab 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 grab rod connection plate portion.

7. The aerial work platform connecting frame with adjustable spacing according to claim 6, 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 portion and the double-ear pin shaft connection plate portion of the long axis pick rod latch connection seat are arranged in parallel and staggered manner.

8. The aerial work platform connecting frame with adjustable spacing according to claim 7, 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.

9. The aerial work platform connecting frame with adjustable spacing according to claim 8, characterized in that: The long pin shaft, the short pin shaft and the connecting screw rod are all provided with anti-drop holes, and detachable anti-drop pins are provided on the anti-drop holes.

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