Modularized assembly type hydraulic jacking portal crane

Abstract

The invention discloses a modular assembly type hydraulic jacking portal crane which comprises a rail device, a hydraulic jacking device and a hydraulic jacking device. The number of the walking devices is two, the walking devices are movably arranged on the left track and the right track respectively, each walking device comprises a power unit and a walking vehicle, and the power units are connected to the walking vehicles in a replaceable mode and used for driving the walking vehicles to move along the track devices; the supporting device is detachably arranged on the walking vehicle; the cross beam is detachably arranged on the supporting device; wherein the rail device, the walking device, the supporting device and the cross beam are all of modular structures and can be adaptively adjusted and assembled according to needs, and the driving friction force of the power unit relative to the rail device can be adjusted. The crane can efficiently and conveniently complete manual installation, hoisting operation and disassembly transition in a high-floor room and other scenes with limited space, the driving friction force can be accurately and efficiently adjusted, and efficient and safe load hoisting can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting equipment, more particularly to a modular assembled hydraulic jacking gantry crane. BACKGROUND

[0002] In some textile, pharmaceutical, household appliance and other light industry production workshops, due to limited space, it is inconvenient to install a crown block in the workshop, resulting in that some equipment cannot be directly hoisted into place by a truck crane; some equipment needs to be installed, repaired and other operations in high floor indoor conditions. Under such conditions, the conventional method is to hoist by setting up a steel structure hoisting point and cooperating with a hand-operated hoist and a winch. However, these operation methods have limitations, such as small lifting capacity, low hoisting precision, inconvenient disassembly and reinstallation, and safety hazards in the operation process.

[0003] The current hydraulic gantry crane, although the structure is relatively simple, but its structure is not designed for high floor indoor operation conditions, such as the size and weight of its components cannot be installed by using an elevator or manual operation; the connection between its components does not consider the convenience of field installation and the flexibility of assembling a suitable crane according to the working environment.

[0004] Therefore, there is an urgent need for a modular assembled hydraulic jacking gantry crane with simple structure, small space occupation, convenient assembly and disassembly, easy maintenance and repair to solve the above problems. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a modular assembled hydraulic jacking gantry crane to solve the problems in the prior art.

[0006] According to the present application, a modular assembled hydraulic jacking gantry crane is provided, which comprises: a track device comprising a left track and a right track; a walking device, the number of which is two, respectively movably arranged on the left track and the right track, comprising a power unit and a walking vehicle, the power unit being replaceably connected to the walking vehicle for driving the walking vehicle to move along the track device; a support device, which is detachably arranged on the walking vehicle; a cross beam, which is detachably arranged on the support device; wherein the track device, the walking device, the support device and the cross beam are modular structures, which can be adaptively adjusted and assembled according to needs, and the driving friction of the power unit relative to the track device is adjustable.

[0007] Preferably, the power unit is rotatably connected to the walking vehicle, and a lead screw is connected between the power unit and the walking vehicle to adjust the driving friction.

[0008] Preferably, the lead screw is a bidirectional lead screw, including a positive adjustment end and a reverse adjustment end, both of which include a nut segment and a screw rod, the nut segment is provided with a first nut cavity segment, a tapered light cavity segment, a second nut cavity segment and a cylindrical light cavity segment in sequence, and the screw rod includes a first screw segment, a reduced-diameter light rod segment and a second screw segment in sequence. The first screw segment is screwed into the first nut cavity segment, and the second screw segment is used in cooperation with the second nut cavity segment, the screw rod has a first adjustment state and a second adjustment state, and the second screw segment can be located in the cylindrical light cavity segment or screwed into the second nut cavity segment, so that the lead screw is in the first adjustment state or the second adjustment state.

[0009] Preferably, the end of the first screw segment close to the reduced-diameter light rod segment is provided with a damping adjustment assembly, which includes a damping ball, an outer push spring and an adjusting plug, a through hole is formed in the first screw segment along the radial direction, two damping balls are arranged at both ends of the through hole and partially exposed from the through hole, the adjusting plug is screwed into the first screw segment and vertically penetrates into the through hole, and one side of the adjusting plug in the through hole is respectively provided with one outer push spring, one end of the outer push spring is connected with the damping ball, and the other end is pressed against the adjusting plug.

[0010] Preferably, the supporting device includes a hydraulic cylinder, and a connecting unit for connecting the cross beam is arranged at the upper end of the hydraulic cylinder, the connecting unit includes a hinged seat and a connecting assembly, and the hinged seat is hinged to the telescopic rod of the hydraulic cylinder. The connecting assembly includes an ear seat bottom plate, a cross beam pressing plate and a limiting plate, the ear seat bottom plate is fixed to the hinged seat, two cross beam pressing plates are arranged at a predetermined distance apart and are connected to the ear seat bottom plate by fastening bolts, the limiting plate is clamped between each cross beam pressing plate and the ear seat bottom plate, the cross beam pressing plate and the corresponding limiting plate are staggered and stacked, and the two cross beam pressing plates are close to each other, so that the ear seat bottom plate, the two cross beam pressing plates and the two limiting plates form a clamping space for clamping and fixing the cross beam.

[0011] Preferably, a pre-tightening adjusting spring is sleeved on the fastening bolt, and the pre-tightening adjusting spring is pressed between the limiting plate and the cross beam pressing plate. A strip-shaped sliding hole is arranged on the limiting plate for the bolt to pass through.

[0012] Preferably, the left rail and the right rail each include: A pillow beam includes an inner beam and an outer beam arranged in parallel with each other, and a connecting plate is arranged between the inner beam and the outer beam and can be detachably connected through the connecting plate. A power rail is detachably arranged on the connecting plate and located between the inner beam and the outer beam. A wheel stop is arranged on the inner beam or the outer beam to limit the rolling of the wheels of the walking vehicle.

[0013] Preferably, the left rail and the right rail each comprise a plurality of rail units connected in sequence, and each rail unit is provided with a butt joint tail at both ends matched with the adjacent rail unit. The butt joint tails at both ends of each rail unit are respectively a protruding V-shaped butt joint and a concave V-shaped butt joint.

[0014] Preferably, the cross beam comprises a plurality of beam segments connected in sequence, and the plurality of beam segments are detachably connected through the hoop plates. The cross beam is provided with a hoisting assembly, the hoisting assembly comprises two sliding units arranged at a preset distance, a length adjusting rod and a driving oil cylinder, both sliding units are sleeved on the cross beam, the length adjusting rod is connected between the two sliding units, and the length adjusting rod is used to adjust the distance between the two sliding units. One end of the driving oil cylinder is hinged to one side of the cross beam, and the other end is connected with an adjacent sliding unit.

[0015] Preferably, the sliding unit comprises a sliding vehicle and a hoisting lock, the sliding vehicle is slidably supported on the top wall of the cross beam, and the hoisting lock is inserted into the sliding vehicle and sleeved on the cross beam.

[0016] The modular assembled hydraulic jib crane has the following beneficial technical effects: 1. The rail device, the walking device, the supporting device and the cross beam are all modular structures, which can be quickly assembled and disassembled, so that the modular assembled hydraulic jib crane can be more conveniently installed manually, hoisted and disassembled in a high floor indoor space and other space-limited scenes; 2. Each module has strong adaptability, can be adaptively adjusted and assembled according to needs, and the power unit can be quickly replaced according to load driving needs, so that the modular assembled hydraulic jib crane of different specifications can be adapted, and the user can flexibly assemble the crane according to the working scene; 3. By arranging the lead screw between the power unit and the walking vehicle, the driving friction of the power unit relative to the rail device can be adjusted, so that the walking of the modular assembled hydraulic jib crane can be stably and safely operated; 4. By rationally designing the support device, on the one hand, it can ensure that when the multi-stage hydraulic cylinders on both sides of the crane are not raised and lowered synchronously, the hydraulic cylinders are not affected by lateral forces, thus ensuring the stability of the crane during operation; on the other hand, this structural design of the connecting components can adjust the size of the clamping space by adjusting the distance between the two limit plates, and adjust the clamping force of the fastening bolts on the pre-tightening adjustment spring, thereby adapting to different specifications of crossbeams and firmly installing the crossbeams. 5. By rationally designing the track device, the various track units of the track device can be quickly and accurately connected, ensuring efficient installation of the track and the straightness of the installation. Attached Figure Description

[0017] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the invention with reference to the accompanying drawings.

[0018] Figure 1 A three-dimensional structural schematic diagram of a modular, assembled hydraulic jacking gantry crane according to an embodiment of the present invention is shown.

[0019] Figure 2 A front view of a modular, assembled hydraulic jacking gantry crane according to an embodiment of the present invention is shown.

[0020] Figure 3 A left view of a modular, assembled hydraulic jacking gantry crane according to an embodiment of the present invention is shown.

[0021] Figure 4 A schematic diagram of the connection structure between the track device, the walking device, and the support device according to an embodiment of the present invention is shown.

[0022] Figure 5 A three-dimensional structural schematic diagram of the track unit of a modular assembled hydraulic jacking gantry crane according to an embodiment of the present invention is shown.

[0023] Figure 6 A top view of the track unit of a modular, assembled hydraulic jacking gantry crane according to an embodiment of the present invention is shown.

[0024] Figure 7 A three-dimensional structural schematic diagram of the traveling device of a modular assembled hydraulic jacking gantry crane according to an embodiment of the present invention is shown, with the device arranged on one of the tracks.

[0025] Figure 8 A front view of the traveling device of a modular, assembled hydraulic jacking gantry crane according to an embodiment of the present invention is shown, with the device arranged on one of the tracks.

[0026] Figure 9A side view of the traveling device of a modular, assembled hydraulic jacking gantry crane according to an embodiment of the present invention is shown, with the device arranged on one of the tracks.

[0027] Figure 10 A schematic diagram of a lead screw according to an embodiment of the present invention is shown.

[0028] Figure 11 It shows Figure 10 A schematic diagram of the structure of one of the adjustment terminals.

[0029] Figure 12 It shows Figure 11 Enlarged view of section A.

[0030] Figure 13 A schematic diagram of the push ring according to an embodiment of the present invention is shown.

[0031] Figure 14 A schematic diagram of the structure of a beam according to an embodiment of the present invention is shown.

[0032] Figure 15 A schematic diagram of the lifting lock according to an embodiment of the present invention is shown.

[0033] Figure 16 A disassembly diagram of the sliding unit of the hoisting assembly according to an embodiment of the present invention is shown.

[0034] Figure 17 A schematic diagram of the structure of a mobile hydraulic station according to an embodiment of the present invention is shown.

[0035] In the diagram: Track device 1, sleeper beam 11, power rail 12, wheel guard rail 13, V-shaped connector 14, V-shaped interface 15, connecting plate 16, traveling device 2, power unit 21, traveling vehicle 22, lead screw 23, first lead screw cavity section 231, conical optical cavity section 232, second lead screw cavity section 233, cylindrical optical cavity section 234, first lead screw section 235, reduced diameter optical rod section 236, second lead screw section 237, damping adjustment assembly 238, damping ball 2381, push spring 2 382, Adjusting plug 2383, Support device 3, Hydraulic cylinder 31, Connecting unit 32, Hinge seat 321, Connecting assembly 322, Ear seat base plate 3221, Crossbeam pressure plate 3222, Limiting plate 3223, Fastening bolt 3224, Support rod 33, Crossbeam 4, Beam segment 41, Hoop plate 42, Lifting assembly 43, Sliding unit 431, Sliding trolley 4311, Lifting lock 4312, Length adjusting rod 432, Drive cylinder 433, Mobile hydraulic station 5. Detailed Implementation

[0036] Various embodiments of the invention will now be described in more detail with reference to the accompanying drawings. In the various drawings, the same elements are indicated by the same or similar reference numerals. For clarity, the various parts in the drawings are not drawn to scale.

[0037] like Figures 1-3 As shown, this invention provides a modular, assembled hydraulic jacking gantry crane, which includes a track device 1, a traveling device 2, a support device 3, and a crossbeam 4. The track device 1 includes a left track and a right track; the traveling device 2, consisting of two units movably mounted on the left and right tracks respectively, includes a power unit 21 and a traveling carriage 22. The power unit 21 is interchangeably connected to the traveling carriage 22 for driving the traveling carriage 22 to move along the track device; the support device 3 is detachably mounted on the traveling carriage 22; and the crossbeam 4 is detachably mounted on the support device 3. The track device 1, traveling device 2, support device 3, and crossbeam 4 are all modular structures, allowing for adaptive assembly and adjustment as needed. The driving friction force of the power unit 21 relative to the track is adjustable.

[0038] refer to Figures 5-6 Both the left and right tracks include a sleeper beam 11, a power rail 12, and a wheel stop rail 13. The sleeper beam 11 includes an inner beam and an outer beam arranged parallel to each other, with a connecting plate 16 between them, and they are detachably connected via the connecting plate 16. The power rail 12 is detachably mounted on the connecting plate 16 and located between the inner and outer beams. The wheel stop rail 13 is mounted on the inner or outer beam and is used to limit the rolling motion of the wheels of the traveling vehicle 22.

[0039] Both the left and right tracks consist of multiple track units connected in sequence. Each track unit has a mating tail at both ends that matches the adjacent track unit. The mating tails at both ends of each track unit are a protruding V-shaped mating head 14 and a concave V-shaped mating head 15, respectively.

[0040] In this embodiment, the inner and outer beams are made of I-beams, and the connecting plates 16 are made of channel steel. Connecting plates 16 are provided on the inner sides of both the inner and outer beams, and the connecting plates 16 of the inner and outer beams are bolted back-to-back. Connecting end plates are provided at the ends of the inner and outer beams, and elongated holes are provided on the connecting end plates to achieve the connection between the track units.

[0041] Reinforcing ribs are provided on the inner and outer beams. The power rail 12 is a plate-like structure, bolted to the connecting plate 16. Both ends of the inner and outer beams have protruding or concave beveled edges. The two protruding beveled edges at one end form a protruding V-shaped connector 14, and the two concave beveled edges at the other end form a concave V-shaped interface 15. The protruding V-shaped connectors 14 and concave V-shaped interfaces 15 at both ends of the track units improve the docking efficiency between track units and ensure the straightness of the track device 1 after docking.

[0042] The wheel rail 13 is a groove-shaped structure located on the top wall of the inner or outer beam. It is used to limit the rolling of the wheels of the traveling vehicle 22, guide the traveling vehicle 22, and prevent it from slipping.

[0043] The traveling vehicle 22 has rollers on both sides of its bottom, and the two rollers are used to support the corresponding power rails 12. The traveling vehicle 22 has a column on one side of its upper part for connecting to the power unit 21.

[0044] refer to Figure 4 and Figures 7-9 The power unit 21 includes a drive box and a hydraulic motor. The hydraulic motor is mounted on one side of the drive box, and its shaft extends into the drive box and is connected to the drive shaft inside the drive box. A roller is provided at the bottom of the drive box, which is mounted on the drive shaft and protrudes from the bottom of the drive box. The lead screw at the lower end of the cylinder of the lead screw 23 is rotatably connected to the top wall of the drive box.

[0045] The power unit 21 is rotatably connected to the traveling vehicle 22 via the lead screw 23, and is also adjustablely connected to the traveling vehicle 22 via the lead screw 23.

[0046] In this embodiment, the side wall of the drive box is rotatably connected to the side wall of the traveling vehicle 22, and the rotating shaft is detachable.

[0047] The lead screw 23 is a bidirectional lead screw 23. The upper end of the cylinder of the lead screw 23 is hinged to the column of the traveling vehicle 22, and the lower end of the cylinder is rotatably connected to the drive box of the power unit 21. The connecting shaft between the lead screw, the column, and the traveling vehicle 22 can be detached, thus realizing a detachable connection between the lead screw 23, the power unit 21, and the traveling vehicle 22. An operating hole is provided in the middle of the cylinder of the lead screw 23 for inserting an operating rod, such as an external hexagonal wrench, to rotate the cylinder of the lead screw 23 to adjust the extension length of the lead screw at both ends. On the one hand, this adjusts the friction between the roller of the power unit 21 and the power rail 12, ultimately adjusting the driving force of the power unit 21, so that the traveling device 2 can operate smoothly. On the other hand, when the load being hoisted changes, a matching model of the power unit 21 can be replaced as needed, and the power unit 21 can be adjusted to a suitable position through the lead screw 23.

[0048] refer to Figures 10-12 In another embodiment, the lead screw 23 is a bidirectional lead screw 23, including a forward adjustment end and a reverse adjustment end, both of which include a screw section and a lead rod. The screw section has a first screw cavity section 231, a tapered optical cavity section 232, a second screw cavity section 233, and a cylindrical optical cavity section 234 arranged sequentially. The lead rod includes a first screw section 235, a reduced-diameter optical rod section 236, and a second screw section 237 arranged sequentially. The first screw section 235 is screwed into the first screw cavity section 231, and the second screw section 237 is used in conjunction with the second screw cavity section 233. The lead rod has a first adjustment state and a second adjustment state. The second screw section 237 can be located in the cylindrical optical cavity section 234 or screwed into the second screw cavity section 233, thereby making the lead screw 23 in the first adjustment state or the second adjustment state.

[0049] A damping adjustment assembly 238 is provided at the end of the first wire segment 235 near the reduced diameter smooth rod segment 236. The assembly includes a damping ball 2381, an outward push spring 2382, and an adjusting plug 2383. A through hole is provided on the first wire segment 235 along the radial direction. Two damping balls 2381 are located at both ends of the through hole and partially protrude from the through hole. The adjusting plug 2383 is screwed onto the first wire segment 235 and extends vertically through the through hole. An outward push spring 2382 is provided on both sides of the adjusting plug 2383 in the through hole. One end of the outward push spring 2382 is connected to the damping ball 2381, and the other end is pressed against the adjusting plug 2383.

[0050] Furthermore, the conical optical cavity section 232 has a through adjustment hole for inserting tools, such as an external hex wrench. When not in use, the adjustment hole can be blocked with something such as a breather valve or a plug. The damping adjustment assembly 238, the conical optical cavity section 232, and the adjustment hole together form the damping adjustment unit. When the second adjustment state is needed, the external hex wrench is inserted to externally rotate the adjustment plug 2383 outwards until it disengages from the through hole, thereby providing inward space for the two outward-pushing springs 2382. The adjustment plug 2383 is recessed into the first threaded section 235. The plug body of the adjustment plug 2383 includes a threaded section, a compression section, and an insertion tip arranged sequentially. The inner sides of the two compression springs are respectively provided with push rings. See [reference needed]. Figure 13 The push ring has multiple claws distributed circumferentially, with grooves formed between adjacent claws. The claws on two push rings are positioned opposite each other, and the adjacent grooves of the two push rings form a squeezing groove to facilitate the insertion of the insertion tip. The insertion tip is used to drive the cylindrical body of the adjusting plug 2383 into the space between the two external push springs 2382, and the outer end of the adjusting plug 2383 sinks into the first thread segment 235. The number of claws on the push ring can be specifically set according to needs and debugging conditions, and is not specifically limited here.

[0051] In this embodiment, the outer diameters of the first wire segment 235 and the second wire segment 237 are the same, and the pitch of the threads is the same. The diameter of the tapered optical cavity segment 232 gradually decreases from the second wire cavity segment 233 toward the first wire cavity segment 231 and transitions to the first wire cavity segment 231. When the lead screw extends outward, the two damping balls 2381 of the damping adjustment component 238 are gradually squeezed by the tapered optical cavity segment 232 and generate a damping effect, thereby gradually reducing the control adjustment speed. The closer to the adjustment end, the greater the adjustment damping match, making the end adjustment of the driving friction force more precise. On the other hand, after the adjustment is completed, it can also play a certain degree of locking role during use.

[0052] Because manual adjustment of the lead screw 23 is relatively convenient, it cannot be too bulky. However, a small-sized lead screw 23 cannot meet the needs of large-span adjustment, thus failing to meet the requirements of multiple scenarios. However, in this embodiment, the design of the lead screw 23, through the design of a reduced-diameter smooth rod section 236, two wire sections, and multiple cavity sections with different structures, with each rod section and cavity section ingeniously matched, makes the lead screw 23 neither bulky nor difficult to adjust due to the excessive oblique extrusion resistance of a full-size, large-diameter lead screw. At the same time, it has two adjustment states. The first adjustment state can meet the needs of most scenarios, and the second adjustment state matches the driving force requirements of larger specifications, which can meet the special working conditions with high driving force requirements, and the adjustment accuracy is extremely controllable.

[0053] refer to Figure 4 The support device 3 includes a hydraulic cylinder 31. The upper end of the hydraulic cylinder 31 is provided with a connecting unit 32 for connecting the crossbeam 4. The connecting unit 32 includes a hinge seat 321 and a connecting assembly 322. The hinge seat 321 is hinged to the telescopic rod of the hydraulic cylinder 31. The bottom of the hydraulic cylinder 31 is detachably connected to the traveling vehicle 22, specifically by means of a threaded connection to the top wall of the traveling vehicle 22.

[0054] In this embodiment, the hinge shaft of the hinge seat 321 is detachable, and the hydraulic cylinder 31 is a multi-stage hydraulic cylinder 31. By setting the support device 3, a hinge component of the crossbeam 4 is formed to ensure that when the multi-stage hydraulic cylinders 31 on both sides of the crane are raised and lowered asynchronously, the hydraulic cylinders 31 are not affected by lateral forces, thereby ensuring the stability of the crane during operation. Furthermore, rotation angle limiting plates are provided on opposite sides of the hinge seat 321 to limit the rotation angle of the support device 3. On the one hand, this ensures that the support device 3 is in a certain position, which is beneficial for the assembly of the crossbeam 4; on the other hand, it prevents the support device 3 from tilting over rapidly and significantly, which could damage the telescopic rod of the hydraulic cylinder 31.

[0055] The traveling vehicle 22 has connecting seats at its four corners on its top surface. The hydraulic cylinder 31 is supported on the traveling vehicle 22 by four support rods 33. The lower end of each support rod 33 is rotatable and detachably connected to the corresponding connecting seat, and the upper end is provided with a fixing plate, which is detachably wrapped around and fixed to the peripheral wall of the hydraulic cylinder 31. In this embodiment, every two support rods 33 form a group and share a fixing plate, which is connected to each other by bolts.

[0056] The connecting assembly 322 includes an ear base plate 3221, a crossbeam pressure plate 3222, and a limiting plate 3223. The ear base plate 3221 is fixed on the hinge seat 321. The two crossbeam pressure plates 3222 are set at a preset distance and are respectively connected to the ear base plate 3221 by fastening bolts 3224. The limiting plate 3223 is clamped between each crossbeam pressure plate 3222 and the ear base plate 3221. The crossbeam pressure plates 3222 and the corresponding limiting plates 3223 are stacked alternately. The two crossbeam pressure plates 3222 are close to each other, so that a clamping space is formed between the ear base plate 3221, the two crossbeam pressure plates 3222, and the two limiting plates 3223 for clamping and fixing the crossbeam 4.

[0057] As a further preferred technical solution, a preload adjustment spring (not shown in the figure) is fitted onto the fastening bolt 3224. The preload adjustment spring is pressed between the limiting plate 3223 and the crossbeam pressure plate 3222. The limiting plate 3223 is provided with a strip-shaped sliding hole for the bolt to pass through. When the multi-stage hydraulic cylinders 31 on both sides of the crane are not synchronized in lifting and lowering, the preload adjustment spring can make local adaptive micro-adjustments to correspond to the clamping part of the crossbeam 4, thereby cooperating with the hinge seat 321 to prevent the hydraulic cylinders 31 from being affected by lateral forces and to prevent damage to the connecting assembly 322, thus ensuring the stability of the crane during operation.

[0058] The structural design of the connecting component 322 allows for adjustment of the clamping space by adjusting the distance between the two limiting plates 3223, and adjustment of the clamping force of the pre-tightening spring by adjusting the fastening bolt 3224, thereby adapting to different specifications of crossbeams 4 and ensuring the crossbeams 4 are securely installed.

[0059] If the span of the crossbeam 4 is large, the connecting component 322 can be replaced with different specifications of the ear base plate 3221 and the limiting plate 3223 to adapt to different specifications of the crossbeam 4, thus enriching the application scenarios of the modular assembly hydraulic jacking gantry crane.

[0060] refer to Figures 14-16The crossbeam 4 is a spliced ​​structure, comprising multiple beam segments 41 connected in sequence, which are detachably connected by a clamping plate 42. The crossbeam 4 is equipped with a hoisting assembly 43, which includes two sliding units 431 spaced at a preset distance, a length adjusting rod 432, and a drive cylinder 433. The two sliding units 431 are both sleeved on the crossbeam 4 and are connected by the length adjusting rod 432, which is used to adjust the distance between the two sliding units 431. One end of the drive cylinder 433 is hinged to one side of the crossbeam 4, and the other end is connected to an adjacent sliding unit 431.

[0061] In this embodiment, there are two beam segments 41, both made of hot-rolled H-beams, and the two beam segments 41 are connected by bolts via a clamping plate 42. The modular design of the crossbeam 4 allows it to be disassembled and transported to the working floor by elevator when performing indoor operations on high floors. In addition, crossbeams 4 with different spans can be formed by replacing beam segments 41 of different lengths.

[0062] The sliding unit 431 includes a sliding carriage 4311 and a lifting lock 4312. The sliding carriage 4311 is slidably supported on the top wall of the crossbeam 4, and the lifting lock 4312 is inserted into the sliding carriage 4311 and sleeved on the crossbeam 4.

[0063] In this embodiment, the sliding carriage 4311 has hinge ears at both ends for connecting to the drive cylinder 433 or the length adjusting rod 432. The sliding carriage 4311 has pulleys protruding from its bottom surface for sliding on the bottom wall of the crossbeam 4. The sliding carriage 4311 has two insertion slots for inserting the lifting lock 4312. The lifting lock 4312 includes two perforated hanging plates spaced at a preset distance, connected by a connecting plate to form a lifting ring structure.

[0064] The modular, assembled hydraulic jacking gantry crane also includes a mobile hydraulic station 5, which comprises an oil tank, hydraulic valve platform, electric motor, hydraulic pump, and a base with casters. The mobile hydraulic station 5 is connected to two sets of hydraulic cylinders 31, two sets of hydraulic motors, and a drive cylinder 433 via hydraulic hoses. It provides hydraulic power to the modular, assembled hydraulic jacking gantry crane through the hydraulic hoses. Casters are installed under its base for easy movement.

[0065] When using the modular, assembled hydraulic jacking gantry crane in this embodiment, the following steps can be followed: 1. After the crane is transported to the site, the left and right rails are quickly assembled and the rail assembly is formed according to the site layout. 2. Then the traveling vehicle 22 is installed on the track device 1, and then the power unit 21 is installed, thereby installing the traveling device 2 on the track device 1; 3. Install support device 3 on walking device 2; 4. Assemble the crossbeam 4 and install the crossbeam 4 onto the support device 3; 5. Connect the oil pipes of the mobile hydraulic station 5 to the corresponding hydraulic components; In this way, modular assembly of hydraulic jacking gantry cranes is achieved.

[0066] By adopting the above technical solution, the power source and the execution end of the modular assembled hydraulic jacking gantry crane can be detachably connected, thus achieving the effect of lightweighting the crane.

[0067] In summary, the modular assembly hydraulic jacking gantry crane of this invention has the following beneficial technical effects: 1. The track device 1, traveling device 2, support device 3, and crossbeam 4 are all modular structures, which can be quickly assembled and disassembled. This allows the modular assembled hydraulic jacking gantry crane to easily complete manual installation, hoisting operations, and disassembly and relocation in high-rise indoor spaces and other spaces with limited space. 2. Each module is highly adaptable and can be adjusted and assembled according to needs. The power unit 21 can be quickly replaced according to the load drive requirements. In this way, it can be adapted to modular assembled hydraulic jacking gantry cranes of different specifications. Users can flexibly assemble the crane according to the operation scenario. 3. By setting a lead screw 23 between the power unit 21 and the traveling vehicle 22, the driving friction force of the power unit 21 relative to the track device 1 can be adjusted, so that the travel of the modular assembled hydraulic lifting gantry crane can be stable and safe. 4. By making reasonable structural designs for the support device 3, on the one hand, it can ensure that when the multi-stage hydraulic cylinders 31 on both sides of the crane are not raised and lowered synchronously, the hydraulic cylinders 31 are not affected by lateral forces, thereby ensuring the stability of the crane during operation; on the other hand, the structural design of the connecting component 322 can adjust the size of the clamping space by adjusting the distance between the two limit plates 3223, and adjust the clamping force of the pre-tightening adjustment spring by adjusting the fastening bolts 3224, thereby adapting to different specifications of crossbeams 4 and firmly installing the crossbeams 4. 5. By rationally designing the track device 1, the various track units of the track device 1 can be quickly and accurately connected, ensuring efficient installation of the track and the straightness of the installation.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A modular assembled hydraulic gantry crane, characterized in that, The utility model relates to a track device, walking device, support device and crossbeam, and the track device, walking device, support device and crossbeam are all modular structure, can carry out adaptability adjustment assembly according to need, and the driving friction of power unit relative track device is adjustable. The power unit is rotatably connected to the walking vehicle, a lead screw is connected between the power unit and the walking vehicle, and the driving friction is adjustable. The lead screw is a bidirectional lead screw, including a positive adjustment end and a reverse adjustment end, both of which include a screw cylinder segment and a screw rod. The first screw segment is screwed into the first screw cavity segment, the second screw segment is used in cooperation with the second screw cavity segment, the screw rod has a first adjustment state and a second adjustment state, and the second screw segment can be located in the cylindrical light cavity segment or screwed into the second screw cavity segment, so that the lead screw is in the first adjustment state or the second adjustment state. The end of the first screw segment close to the reduced diameter light rod segment is provided with a damping adjustment assembly, which includes a damping ball, an outer push spring and an adjusting plug. The support device includes a hydraulic cylinder, a connecting unit for connecting the crossbeam is arranged on the upper end of the hydraulic cylinder, the connecting unit includes a hinged seat and a connecting assembly, and the hinged seat is hinged to the telescopic rod of the hydraulic cylinder.

2. The modular assembled hydraulic jib crane of claim 1, wherein, The connecting assembly includes an ear seat bottom plate, a crossbeam pressing plate and a limiting plate, the ear seat bottom plate is fixed to the hinged seat, two crossbeam pressing plates are arranged at a predetermined distance apart and are connected to the ear seat bottom plate by fastening bolts, the limiting plate is clamped between each crossbeam pressing plate and the ear seat bottom plate, the crossbeam pressing plate and the corresponding limiting plate are staggered and stacked, the two crossbeam pressing plates are close to each other, so that the ear seat bottom plate, the two crossbeam pressing plates and the two limiting plates form a clamping space for clamping and fixing the crossbeam.

3. The modular assembled hydraulic jib crane of claim 2, wherein, A pre-tightening adjusting spring is sleeved on the fastening bolt, and the pre-tightening adjusting spring is pressed between the limiting plate and the crossbeam pressing plate. A strip-shaped sliding hole is arranged on the limiting plate for the bolt to pass through.

4. The modular assembled hydraulic jib crane of claim 3, wherein, The left track and the right track each include:

5. The modular assembled hydraulic jib crane of claim 1, wherein, a sleeper beam including an inner beam and an outer beam arranged parallel to each other, a connecting plate arranged between the two, and detachably connected through the connecting plate; a power rail detachably arranged on the connecting plate and located between the inner beam and the outer beam; 6. The modular assembled hydraulic jib crane of claim 5, wherein, ​ ​ 7. The modular assembled hydraulic jib crane of claim 1, wherein, ​ ​ ​ A wheel stop is arranged on the inner beam or the outer beam to limit the rolling of the wheels of the walking vehicle.

8. The modular assembled hydraulic jib crane of claim 1, wherein, The left rail and the right rail each comprise a plurality of rail units connected in sequence, and each rail unit is provided with a butt joint tail at both ends matching the butt joint tail of the adjacent rail unit. The butt joint tails at both ends of each rail unit are respectively a protruding V-shaped butt joint and a recessed V-shaped butt joint.

9. The modular assembled hydraulic jib crane of claim 1, wherein, The cross beam comprises a plurality of beam segments connected in sequence, and the beam segments are detachably connected through a hoop plate. A hoisting assembly is arranged on the cross beam, and the hoisting assembly comprises two sliding units arranged at a preset distance, a length adjusting rod, and a driving oil cylinder. One end of the driving oil cylinder is hinged to one side of the cross beam, and the other end is connected to an adjacent sliding unit.

10. A modular assembled hydraulic jib crane according to claim 9, characterized in that, The sliding unit comprises a sliding vehicle and a hoisting lock, the sliding vehicle is slidably supported on the top wall of the cross beam, and the hoisting lock is inserted into the sliding vehicle and sleeved on the cross beam.

Images