A vehicle unloading device

Abstract

The present invention provides an unloading device, which belongs to the technical field of unloading liquefied gas tanks. The unloading device comprises a transport vehicle and a gas tank located on the transport vehicle, and also comprises two support assemblies located at the front and rear sides of the transport vehicle and two fixing assemblies respectively installed on the two support assemblies and used for fixing the gas tank. The support assembly comprises a support rod extending along the axial direction of the gas tank, a support frame, lifting universal wheels located at the bottom of both ends of the support frame, a first driving member, a second driving member, and a first connecting block and a second connecting block for installing the fixing assembly. The support frame is slidably installed at the bottom of the support rod along the axial direction of the gas tank. The bottoms of the first connecting block and the second connecting block are respectively hinged to the two ends of the top of the support rod to form a rotating shaft with an axis parallel to the axis of the gas tank. One end of the fixing assembly is hinged to the first connecting block, and the other end of the fixing assembly is clamped to the second connecting block, so as to avoid shaking of the gas tank during unloading and installation.

Description

Technical Field

[0001] The invention belongs to the technical field of liquefied gas tank unloading, and in particular relates to an unloading device. Background Art

[0002] A liquefied gas tank is a container for storing compressed liquefied gas, usually made of steel or aluminum. When transporting the liquefied gas tank to the gas station for installation, the tank needs to be unloaded from the vehicle. There are two types of liquefied gas tanks: vertical tanks and horizontal tanks. Due to the heavy weight of liquefied gas tanks, it is generally hoisted at present, lifting the empty tank and placing it in a predetermined position, but the hoisting is unstable, and the tank will shake during hoisting, which is not conducive to the installation of the tank.

[0003] A Chinese patent with authorization announcement number CN212531526U discloses a liquefied gas tank unloading device, which includes a bottom plate and an inclined plate. The top of the bottom plate is provided with an inclined plate, support rods are fixedly provided at both ends of one side of the bottom of the inclined plate, and the bottom end of the support rod is fixedly connected to the bottom plate, a rubber pad is fixedly provided on one side of the top of the bottom plate, and the rubber pad is in contact with a side of the inclined plate away from the support rod, baffles are fixedly provided on both sides of the inclined plate, and a plurality of buffer mechanisms are equidistantly provided on the opposite sides of the two baffles.

[0004] Although the existing unloading device can first slowly unload the gas cylinder from the transport vehicle, and then transfer it to the installation site and install it with the assistance of a crane, or directly lift the gas cylinder from the transport vehicle to the installation site by a gantry crane, etc., it is not conducive to the unloading and installation of the gas cylinder due to the shaking of the gas cylinder during lifting, which causes physical loss of personnel, thus affecting the unloading and installation efficiency of the gas cylinder, and also causes deviations during installation. Summary of the invention

[0005] The purpose of the present invention is to provide an unloading device, aiming to solve the problem in the prior art that when the gas cylinder is unloaded and installed in the lifting direction, the gas cylinder will shake, causing physical loss of personnel, thereby affecting the unloading and installation efficiency of the gas cylinder.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a vehicle unloading device, comprising a transport vehicle and a gas tank on the transport vehicle, and also comprising two supporting assemblies located on the front and rear sides of the transport vehicle and two fixing assemblies respectively installed on the two supporting assemblies and used to fix the gas tank.

[0007] The support assembly includes a support rod extending along the axis direction of the gas tank, a support frame, lifting universal wheels located at the bottom of both ends of the support frame, a first driving member, a second driving member, and a first connecting block and a second connecting block for installing the fixing assembly. The support frame is slidably installed at the bottom of the support rod along the axis direction of the gas tank, and the bottoms of the first connecting block and the second connecting block are respectively hinged to the top two ends of the support rod with a rotating shaft whose axis is parallel to the axis of the gas tank. One end of the fixing assembly is hinged to the first connecting block, and the other end of the fixing assembly is clamped to the second connecting block. The first driving member is installed at the top of the support rod and drives the rotating shaft to rotate. The second driving member is installed at one end of the support rod, and is used to drive the support frame to slide and drive the fixing assembly to rotate around the hinge with the first connecting block, thereby standing the gas tank upright.

[0008] The effect is that by setting up the supporting assembly, the gas cylinder can be unloaded from the truck and transferred to the installation site for upright installation without the aid of a crane, etc., only by mechanical means. This avoids the situation where the gas cylinder is easily shaken when the existing equipment is used to unload and install the gas cylinder, causing physical loss to the personnel, thereby affecting the unloading and installation efficiency of the gas cylinder, and also causing deviations during installation.

[0009] The first driving member includes a rotating motor, the output shaft of the rotating motor is fixedly connected to the rotating shaft, the top of the support rod is provided with protrusions respectively used to be fixedly connected to the two ends of the rotating shaft, and the first connecting block and the second connecting block are both rotatably connected to the rotating shaft.

[0010] A guide groove is provided at the top of the support rod, which penetrates the support rod and extends in the left and right directions. The second driving member includes a first motor fixedly installed at one end of the support rod, a lead screw rotatably installed at the left and right ends of the guide groove, a transmission block threadedly sleeved on the lead screw, and a top block located on the top of the transmission block. One end of the lead screw rotates to penetrate the support rod and is transmission-connected to the output shaft of the first motor. The transmission block is slidingly connected to the guide groove in the left and right directions, and the bottom of the transmission block passes through the guide groove and is fixedly connected to the support frame. The top of the top block extends out of the guide groove and contacts the bottom of the fixed component.

[0011] The second driving member also includes a second motor and a stud. An extension portion is provided in the middle of the transmission block. The second motor is fixedly installed at the bottom of the extension portion. The stud rotates in the vertical direction to pass through the extension portion and is transmission-connected to the output shaft of the second motor. The top of the stud extends into the transmission block and is threadedly connected thereto.

[0012] The effect is that by setting the first connecting block, the second connecting block, the first driving member and the second driving member, the device can unload and install both vertical and horizontal gas tanks. Compared with the existing devices that can only unload vertical or horizontal gas tanks, the application scope of the device is further improved.

[0013] Both ends of the bottom of the support frame are provided with connecting parts for installing lifting universal wheels, and a mounting groove is opened on the connecting part. The lifting universal wheel includes a fixed leg fixedly installed at the bottom of the connecting part, a rotating leg located at the bottom of the fixed leg, a telescopic leg slidably sleeved in the fixed leg, a lifting motor installed in the mounting groove, and a screw rod whose axis extends in the vertical direction and is rotatably installed at the bottom of the mounting groove. The bottom of the telescopic leg penetrates the fixed leg and is rotatably connected to the top of the rotating leg, the top of the screw rod is fixedly connected to the output shaft of the lifting motor, the bottom of the screw rod rotates through the connecting part and the fixed leg and spirally extends into the telescopic leg, and a walking wheel is provided at the bottom of the rotating leg.

[0014] The effect is that by setting the lifting universal wheel, the gas cylinder after unloading can be transferred to the installation site, and the transport vehicle can be moved out to avoid the transport vehicle affecting the unloading and installation of subsequent gas cylinders, thereby improving the convenience of the device for unloading and installing the gas cylinder and improving the unloading efficiency of the device.

[0015] The structures on the two fixing components are symmetrical to each other. Both fixing components include a fixing column, fixing blocks installed at both ends of the fixing column close to the gas tank, and an adjusting member for adjusting the angle of the gas tank. Connecting shafts are fixedly installed at both ends of the fixing column, one of the connecting shafts is rotatably installed on the first connecting block, and the second connecting block includes a fixing part and a locking part located above the fixing part. One side of the fixing part and the locking part are hinged, and the other side is provided with a snap-fit ​​part. A snap hole for installing another connecting shaft is provided on the connecting surface of the fixing part and the locking part. The fixing block is an arc surface on the side close to the gas tank for fixing the gas tank.

[0016] The effect is that, by setting the second connecting block, the gas cylinder can be smoothly erected when the vertical gas cylinder is unloaded, and both ends of the gas cylinder can be fixed when the horizontal gas cylinder is unloaded, thereby avoiding the gas cylinder from shifting during the descent of the device, and further improving the stability and safety of the device when unloading the gas cylinder.

[0017] A connecting rod for adjusting the distance between the two fixed components is installed on the fixed blocks relative to each other on the two fixed components. The connecting rod is an L-shaped rod. One end of the two L-shaped rods is fixedly connected to the two fixed blocks respectively. The other ends of the two L-shaped rods are provided with extensions. A locking piece is provided between the two extensions. The locking piece includes a motor installed on one of the extensions and a locking rod with one end drivingly connected to the output shaft of the motor. Threads with opposite rotation directions are provided at both ends of the outer wall of the locking rod, and the two ends of the locking rod are respectively threaded through the two extensions.

[0018] The effect is that the gas cylinder can be reinforced to prevent the gas cylinder from shaking when being erected and installed, thereby improving the stability and safety of the gas cylinder when being erected and installed, and avoiding the need for personnel to manually stabilize the gas cylinder during unloading and installation, resulting in physical loss of personnel, thereby affecting the unloading and installation efficiency of the gas cylinder.

[0019] An arc groove is provided on the arc surface of the fixed block, and the arc groove is coaxial with the arc surface of the fixed block. Arc limit rods coaxial with the arc groove are fixedly installed on the two opposite inner walls of the arc groove. A transmission groove is provided on the other inner wall of the arc groove. The adjusting part includes an arc adjustment plate slidably installed in the arc groove along the circumferential direction of the arc groove, and an adjusting driving part driving the arc adjustment plate to slide. Limiting sliding grooves slidably connected to the arc limit rods are provided on the two side walls of the arc adjustment plate close to the arc limit rod.

[0020] The adjusting drive component includes an arc-shaped rack fixedly installed on the side of the arc-shaped adjusting plate away from the gas tank, an adjusting motor installed on the fixed block, and a gear rotatably installed in the transmission groove and meshing with the arc-shaped rack. The output shaft of the adjusting motor rotates through the fixed block and extends into the transmission groove to be fixedly connected to the gear, and the output shaft of the adjusting motor is coaxial with the gear.

[0021] The effect is that, by setting the arc-shaped adjustment plate, the fixation of the gas tank can be reinforced, and the angle of the gas tank can be adjusted at the same time, so that after the gas tank is transported to the installation site, it can be accurately aligned with the installation site on the bottom surface, further improving the efficiency of the device for unloading and installing the gas tank.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention can unload and install both vertical and horizontal gas cylinders. Compared with the existing device that can only unload vertical or horizontal gas cylinders, the application scope of the device is further improved. At the same time, when unloading a vertical gas cylinder, it is possible to transport the gas cylinder to the installation site for upright installation only through a mechanical device without the aid of a crane, etc., thereby avoiding the shaking of the gas cylinder when the existing equipment is used to unload and install the gas cylinder, resulting in physical loss of personnel, thereby affecting the unloading and installation efficiency of the gas cylinder, and also causing deviations during installation.

[0024] 2. By setting the lifting universal wheel, the transport vehicle can be moved out after the gas tank is transferred to the installation site after unloading, so as to avoid the transport vehicle affecting the unloading and installation of subsequent gas tanks, thereby improving the convenience of the device for unloading and installing gas tanks and improving the unloading efficiency of the device.

[0025] 3. It can reinforce the gas tank to prevent the gas tank from shaking when being erected and installed, improve the stability and safety of the gas tank when being erected and installed, and avoid the need for personnel to manually stabilize the gas tank during unloading and installation, which causes physical loss of personnel and affects the efficiency of unloading and installation of the gas tank. At the same time, it can also adjust the angle of the gas tank so that after the gas tank is transported to the installation site, it can be accurately aligned with the installation site on the ground, further improving the efficiency of the device in unloading and installing the gas tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a structural schematic diagram of the unloading device in the present invention;

[0028] Figure 2 It is a structural schematic diagram of the unloading device of the present invention when unloading a vertical gas tank;

[0029] Figure 3 It is a structural schematic diagram of the unloading device of the present invention when unloading a horizontal gas tank;

[0030] Figure 4 It is a partial structural schematic diagram of the unloading device in the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the fixing component in the present invention;

[0032] Figure 6 It is a side cross-sectional schematic diagram of the support assembly in the present invention.

[0033] In the figure: 1, transport vehicle; 2, support assembly; 21, support rod; 211, guide groove; 22, support frame; 221, connection part; 222, mounting groove; 23, lifting universal wheel; 231, fixed leg; 232, rotating leg; 233, telescopic leg; 234, lifting motor; 235, screw; 24, first connecting block; 241, limit baffle; 25, second connecting block; 251, fixing part; 252, locking part; 26, first driving member; 27, second driving member; 271, The first motor; 272, the lead screw; 273, the transmission block; 274, the top block; 275, the second motor; 276, the stud; 3, the fixing assembly; 31, the fixing column; 311, the connecting shaft; 32, the fixing block; 321, the arc groove; 322, the arc limiting rod; 323, the transmission groove; 33, the connecting rod; 34, the locking piece; 35, the adjusting piece; 351, the arc adjusting plate; 352, the limiting slide groove; 353, the arc rack; 354, the adjusting motor; 355, the gear; 4, the gas tank. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 6 The present invention provides the following technical solutions: a vehicle unloading device, comprising a transport vehicle 1, two support components 2 located at the front and rear sides of the transport vehicle 1, two fixing components 3 respectively installed on the two support components 2, and a gas tank 4.

[0036] refer to Figure 2-Figure 4 and Figure 6 As shown, the structures on the two support assemblies 2 are symmetrical to each other. Both support assemblies 2 include a support rod 21 extending along the axial direction of the gas tank 4, a support frame 22, a lifting universal wheel 23, a first connecting block 24, a second connecting block 25, a first driving member 26 and a second driving member 27.

[0037] A guide groove 211 penetrating the support rod 21 and extending in the left-right direction is formed at the top of the support rod 21 , and a protrusion is formed at the top of the support rod 21 .

[0038] The support frame 22 is slidably installed at the bottom of the support rod 21 along the axial direction of the gas tank 4. Both ends of the bottom of the support frame 22 are provided with connecting parts 221 for installing the lifting universal wheel 23, and the connecting parts 221 are provided with mounting grooves 222.

[0039] refer to Figure 6 As shown, the lifting universal wheel 23 includes a fixed leg 231 fixedly installed at the bottom of the connecting portion 221, a rotating leg 232 located at the bottom of the fixed leg 231, a telescopic leg 233 slidably sleeved in the fixed leg 231, a lifting motor 234 installed in the mounting groove 222, and a screw 235 whose axis extends in the vertical direction and is rotatably installed at the bottom of the mounting groove 222. The bottom of the telescopic leg 233 passes through the fixed leg 231 and is rotatably connected to the top of the rotating leg 232. The top of the screw 235 is fixedly connected to the output shaft of the lifting motor 234. Specifically, a coupling can be used for connection, or one end of the screw 235 can be welded to the output shaft of the lifting motor 234 by direct welding. The bottom of the screw 235 rotates through the connecting portion 221 and the fixed leg 231 and spirally extends into the telescopic leg 233. A walking wheel is provided at the bottom of the rotating leg 232.

[0040] The bottom of the first connecting block 24 and the second connecting block 25 are respectively hinged to the two ends of the top of the support rod 21 with a rotating shaft whose axis is parallel to the axis of the gas tank 4. Both ends of the rotating shaft are fixedly connected to the protrusions on the top of the support rod 21. The first connecting block 24 and the second connecting block 25 are both rotatably connected to the rotating shaft. A limiting baffle 241 is fixedly installed on the side wall of the first connecting block 24 away from the second connecting block 25, which is used to prevent the fixing assembly 3 and the gas tank 4 from tipping over in a direction away from the support rod 21 after being erected.

[0041] The second connecting block 25 includes a fixing portion 251 and a locking portion 252 located above the fixing portion 251. The fixing portion 251 and the locking portion 252 are hinged on one side, and a snap-fit ​​piece is provided on the other side. A snap-fit ​​hole for installing another connecting shaft 311 is provided on the connecting surface of the fixing portion 251 and the locking portion 252.

[0042] The first driving member 26 comprises a rotating motor, and the output shaft of the rotating motor is fixedly connected to the rotating shaft, which can be connected by a coupling, or one end of the rotating shaft can be directly welded to the output shaft of the rotating motor.

[0043] The second driving member 27 includes a first motor 271 fixedly mounted at one end of the support rod 21 , a lead screw 272 , a transmission block 273 , a top block 274 , a second motor 275 and a stud 276 .

[0044] The two ends of the lead screw 272 are rotatably mounted on the left and right ends of the guide groove 211, and one end of the lead screw 272 rotates through the support rod 21 and is connected to the output shaft of the first motor 271. Specifically, a coupling can be used for connection, or one end of the lead screw 272 can be directly welded to the output shaft of the first motor 271.

[0045] The transmission block 273 is slidably sleeved in the guide groove 211 along the left and right directions of the guide groove 211, the transmission block 273 is threadedly connected to the outer surface of the lead screw 272, the bottom of the transmission block 273 passes through the guide groove 211 and is fixedly connected to the support frame 22, and an extension portion is provided in the middle of the transmission block 273.

[0046] The top block 274 is located on the top of the transmission block 273 , and the top of the top block 274 extends out of the guide groove 211 and contacts the bottom of the fixing assembly 3 .

[0047] The second motor 275 is fixedly mounted at the bottom of the extension portion on the transmission block 273, and the stud 276 rotates in the vertical direction to penetrate the extension portion and is connected to the output shaft of the second motor 275. Specifically, a coupling can be used for connection, or one end of the stud 276 can be directly welded to the output shaft of the second motor 275, and the top of the stud 276 extends into the transmission block 273 and is threadedly connected thereto.

[0048] refer to Figure 2-Figure 5 As shown, the structures on the two fixing components 3 are symmetrical to each other, and the two fixing components 3 each include a fixing column 31 , a fixing block 32 , a connecting rod 33 , a locking member 34 and an adjusting member 35 .

[0049] A connecting shaft 311 is fixedly installed at both ends of the fixed column 31, and a through hole for installing the connecting shaft 311 is opened on the first connecting block 24, and a bearing is fixedly installed in the through hole. The outer wall of one connecting shaft 311 is fixedly installed on the inner ring of the bearing, and then rotatably installed on the first connecting block 24 through the bearing, and the other connecting shaft 311 is installed in the clamping hole on the second connecting block 25.

[0050] There are two fixing blocks 32 which are fixedly mounted at the two ends of the side wall of the fixing column 31 close to the gas tank 4. The side of the fixing block 32 close to the gas tank 4 is an arc surface. An arc groove 321 is provided on the arc surface of the fixing block 32. The arc groove 321 is coaxial with the arc surface of the fixing block 32. Arc-shaped limiting rods 322 coaxial with the arc groove 321 are fixedly mounted on the two opposite inner walls of the arc groove 321. A transmission groove 323 is provided on the other inner wall of the arc groove 321. The fixing blocks 32 on the two fixing components 3 cooperate with each other to clamp the gas tank 4 under the action of the connecting rod 33 and the locking member 34.

[0051] The connecting rod 33 is an L-shaped rod, one end of which is fixedly connected to the fixing block 32 , and an extension portion is provided at one end of the connecting rod 33 on the fixing blocks 32 opposite to each other on the two fixing assemblies 3 .

[0052] The locking member 34 includes a motor mounted on one of the extensions and a locking rod, the locking rod being a threaded rod, one end of which rotates through the extension on which the motor is mounted and is connected to the output shaft of the motor, and the other end of the locking rod penetrates the other extension and is threadedly connected thereto. When the motor and the locking rod are connected, a coupling may be used for connection, or one end of the locking rod may be directly welded to the output shaft of the motor.

[0053] refer to Figure 5 As shown, the adjusting member 35 includes an arc-shaped adjusting plate 351 and an adjusting driving member for driving the arc-shaped adjusting plate 351 to slide.

[0054] The arc adjustment plate 351 is slidably installed in the arc groove 321 along the circumferential direction of the arc groove 321. The arc adjustment plate 351 is provided with limiting sliding grooves 352 on both side walls close to the arc limit rod 322. The limiting sliding grooves 352 are slidably sleeved on the outer wall of the arc limit rod 322. A rubber pad is pasted on the side of the arc adjustment plate 351 close to the gas tank 4.

[0055] The adjusting drive member includes an arc-shaped rack 353, an adjusting motor 354 and a gear 355. The arc-shaped rack 353 is fixedly mounted on the side of the arc-shaped adjusting plate 351 away from the gas cylinder 4. The adjusting motor 354 is fixedly mounted on the fixing block 32. The output shaft of the adjusting motor 354 rotates through the fixing block 32 and extends into the transmission groove 323. The gear 355 is rotatably mounted in the transmission groove 323 and meshes with the arc-shaped rack 353. The gear 355 is coaxial with the output shaft of the adjusting motor 354 and the two are fixedly connected. Specifically, a coupling can be used for connection, or the gear 355 can be welded to the output shaft of the adjusting motor 354 by direct welding.

[0056] The implementation principle of the embodiment of the present invention is as follows: when the gas cylinder 4 is unloaded, the transport vehicle 1 is pushed to the vehicle for transporting the gas cylinder 4, and then the gas cylinder 4 is transferred to the top of the transport vehicle 1 by hoisting or other means, and the axis of the gas cylinder 4 is parallel to the support rod 21, and the motors on the locking members 34 at both ends of the fixing column 31 are started to drive the locking rods to rotate, and the locking rods drive the two connecting rods 33 to approach each other through the threads at both ends of the locking rods, and the connecting rods 33 drive the fixing blocks 32 at both ends of the two fixing columns 31 to move toward the gas cylinder 4 , until the arc surface of the fixed block 32 conflicts with the outer wall of the gas tank 4, and at the same time, the adjusting motor 354 is started, and the adjusting motor 354 drives the gear 355 to rotate, and the gear 355 drives the arc rack 353 and the arc adjustment plate 351 to slide out of the arc groove 321 through the engagement with the arc rack 353. When the arc surface of the fixed block 32 conflicts with the outer wall of the gas tank 4, the rubber pad on the arc adjustment plate 351 also contacts the outer wall of the gas tank 4, and then the gas tank 4 is transported to the installation location of the gas tank 4 by the transport vehicle 1.

[0057] Start the lifting motor 234 to drive the screw 235 to rotate. The screw 235 is threadedly connected to the telescopic leg 233 to drive the telescopic leg 233 to be pushed downward from the fixed leg 231. At this time, the height of the rotating leg 232 begins to gradually decrease until the walking wheel at the bottom of the rotating leg 232 contacts the bottom surface. At this time, the transport vehicle 1 is pulled out from under the gas tank 4.

[0058] When the gas tank 4 is a vertical gas tank, the adjusting motor 354 is started, and the adjusting motor 354 drives the gear 355 to rotate. The gear 355 drives the arc rack 353 and the arc adjustment plate 351 to slide along the arc groove 321 through meshing with the arc rack 353, thereby driving the gas tank 4 to rotate, and adjusting the angle of the gas tank 4 so that the mounting foot of the gas tank 4 can correspond to the mounting foot of the bottom surface, open the buckle on the second connecting block 25, and then pull the locking part 252 to disengage it from the fixing part 251, thereby releasing the restriction effect of the second connecting block 25 on the connecting shaft 311, start the first motor 271 and the second motor 275, and the first motor 271 drives the lead screw 272 to rotate. The lead screw 272 is connected to the transmission block 273 through a thread, and drives the transmission block 273 to slide from the second connecting block 25 to the first connecting block 24. At the same time, the second motor 275 drives the stud 276 to rotate, and the stud 276 drives the top block 274 to rise through the threaded connection with the top block 274. At this time, as the transmission block 273 slides from the second connecting block 25 to the first connecting block 24, one end of the fixed column 31 is lifted by the top block 274, and the gas tank 4 is gradually erected under the action of the fixed column 31. When the fixed column 31 contacts the limit baffle 241 and its vertical surface, the first motor 271 is controlled to stop rotating. At the same time, as the transmission block 273 slides from the second connecting block 25 to the first connecting block 24, the support frame 22 slides from the second connecting block 25 to the direction of the first connecting block 24 under the drive of the transmission block 273, supporting the gradually erected gas tank 4, thereby avoiding the situation where the unloading device rolls over due to the gradual increase of the center of gravity of the gas tank 4 during the erection process.

[0059] After the gas tank 4 is fully erected, the gas tank 4 is installed and fixed, and then the motors on the locking pieces 34 at both ends of the fixing column 31 are started to drive the locking rod to rotate. The locking rod drives the two connecting rods 33 to move away from each other through the threads at both ends of the locking rod. The connecting rod 33 drives the fixing blocks 32 at both ends of the two fixing columns 31 to move away from the gas tank 4. Then the adjustment motor 354 is started, and the adjustment motor 354 drives the gear 355 to rotate. The gear 355 drives the arc rack 353 and the arc adjustment plate 351 by meshing with the arc rack 353. Slide into the arc groove 321, start the first motor 271 and the second motor 275, so that they drive the transmission block 273 and the top block 274 to reset, and finally push the transport vehicle 1 back to the bottom of the fixed component 3, and control the lifting motor 234 to rotate in the opposite direction, so that it drives the screw 235 to rotate in the opposite direction. The screw 235 is connected with the telescopic leg 233 through a thread, and drives the telescopic leg 233 to move in the direction of the fixed leg 231, so that it retracts into the fixed leg 231. At this time, the height of the rotating leg 232 begins to gradually rise and reset.

[0060] When the gas tank 4 is a horizontal gas tank, the rotating motors of the first driving members 26 on the two supporting assemblies 2 are started to drive the rotating shaft to rotate, and the two first driving members 26 are controlled to rotate in opposite directions. Since the first connecting block 24 and the second connecting block 25 are acted upon by the fixing column 31, the supporting rod 21, the supporting frame 22 and the lifting universal wheel 23 start to rotate around the rotating shaft under the action of the rotating shaft. At this time, the two supporting frames 22 drive the lifting universal wheel 23 at the bottom thereof to rotate in a direction away from the gas tank 4, so that the height of the gas tank 4 is gradually reduced until the gas tank 4 contacts the mounting portion of the bottom surface, and then the gas tank 4 is lifted. 4 is installed. After the gas tank 4 is installed, the gas tank 4 is pulled out, and then the first driving members 26 on the two supporting assemblies 2 are controlled to rotate in the opposite direction, so that the supporting frame 22 and the lifting universal wheel 23 are driven to rotate in the opposite direction, so that the two are reset, and then the transport vehicle 1 is pushed to the bottom of the fixed assembly 3 again, and the lifting motor 234 is controlled to rotate in the opposite direction, so that the screw rod 235 is driven to rotate in the opposite direction. The screw rod 235 is connected with the telescopic leg 233 through a thread, so as to drive the telescopic leg 233 to move in the direction of the fixed leg 231, so that it is retracted into the fixed leg 231. At this time, the height of the rotating leg 232 begins to gradually rise and reset.

[0061] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A vehicle unloading device, comprising a transport vehicle and a gas tank on the transport vehicle, characterized in that: It also includes two support assemblies located at the front and rear sides of the transport vehicle and two fixing assemblies respectively installed on the two support assemblies and used to fix the gas tank; The support assembly includes a support rod extending along the axis direction of the gas tank, a support frame, a lifting universal wheel located at the bottom of both ends of the support frame, a first driving member, a second driving member, and a first connecting block and a second connecting block for installing the fixing assembly. The support frame is slidably installed at the bottom of the support rod along the axis direction of the gas tank, and the bottoms of the first connecting block and the second connecting block are respectively hinged to the top two ends of the support rod with a rotating shaft whose axis is parallel to the axis of the gas tank. One end of the fixing assembly is hinged to the first connecting block, and the other end of the fixing assembly is clamped with the second connecting block. The first driving member is installed at the top of the support rod and drives the rotating shaft to rotate. The second driving member is installed at one end of the support rod, and is used to drive the support frame to slide and drive the fixing assembly to rotate around the hinge with the first connecting block as the axis, so as to stand the gas tank upright. A limiting baffle is fixedly installed on the side wall of the first connecting block away from the second connecting block. Both ends of the bottom of the support frame are provided with connecting parts for installing lifting universal wheels, and a mounting groove is opened on the connecting part. The lifting universal wheel includes a fixed leg fixedly installed at the bottom of the connecting part, a rotating leg located at the bottom of the fixed leg, a telescopic leg slidably sleeved in the fixed leg, a lifting motor installed in the mounting groove, and a screw rod whose axis extends in the vertical direction and is rotatably installed at the bottom of the mounting groove. The bottom of the telescopic leg penetrates the fixed leg and is rotatably connected to the top of the rotating leg, the top of the screw rod is fixedly connected to the output shaft of the lifting motor, the bottom of the screw rod rotates through the connecting part and the fixed leg and spirally extends into the telescopic leg, and a walking wheel is provided at the bottom of the rotating leg.

2. A vehicle unloading device according to claim 1, characterized in that: The first driving member includes a rotating motor, the output shaft of the rotating motor is fixedly connected to the rotating shaft, the top of the support rod is provided with protrusions respectively used to be fixedly connected to the two ends of the rotating shaft, and the first connecting block and the second connecting block are both rotatably connected to the rotating shaft.

3. A vehicle unloading device according to claim 1, characterized in that: A guide groove is provided at the top of the support rod, which penetrates the support rod and extends in the left and right directions. The second driving member includes a first motor fixedly installed at one end of the support rod, a lead screw rotatably installed at the left and right ends of the guide groove, a transmission block threadedly sleeved on the lead screw, and a top block located on the top of the transmission block. One end of the lead screw rotates to penetrate the support rod and is transmission-connected to the output shaft of the first motor. The transmission block is slidingly connected to the guide groove in the left and right directions, and the bottom of the transmission block passes through the guide groove and is fixedly connected to the support frame. The top of the top block extends out of the guide groove and contacts with the bottom of the fixed component.

4. A vehicle unloading device according to claim 3, characterized in that: The second driving member also includes a second motor and a stud. An extension portion is provided in the middle of the transmission block. The second motor is fixedly installed at the bottom of the extension portion. The stud rotates in the vertical direction to pass through the extension portion and is transmission-connected to the output shaft of the second motor. The top of the stud extends into the transmission block and is threadedly connected thereto.

5. The unloading device according to claim 1, characterized in that: The structures on the two fixing components are symmetrical to each other. Both of the two fixing components include a fixing column, fixing blocks installed at both ends of the fixing column close to the gas tank, and an adjusting member for adjusting the angle of the gas tank. Connecting shafts are fixedly installed at both ends of the fixing column, one of the connecting shafts is rotatably installed on the first connecting block, and the second connecting block includes a fixing part and a locking part located above the fixing part. One side of the fixing part and the locking part are hinged, and the other side is provided with a snap-fit ​​part. A snap hole for installing another connecting shaft is provided on the connecting surface of the fixing part and the locking part. The fixing block is an arc surface close to the gas tank for fixing the gas tank.

6. A vehicle unloading device according to claim 5, characterized in that: A connecting rod for adjusting the distance between the two fixing components is installed on the fixing blocks relative to each other on the two fixing components. The connecting rod is an L-shaped rod. One end of the two L-shaped rods is fixedly connected to the two fixing blocks respectively. The other ends of the two L-shaped rods are provided with extensions. A locking piece is provided between the two extensions. The locking piece includes a motor installed on one of the extensions and a locking rod. The locking rod is a threaded rod. One end of the threaded rod is rotated to pass through the extension on which the motor is installed and then connected to the output shaft of the motor. The other end of the locking rod passes through the other extension and is threadedly connected to it.

7. A vehicle unloading device according to claim 5, characterized in that: An arc groove is provided on the arc surface of the fixed block, and the arc groove is coaxial with the arc surface of the fixed block. Arc-shaped limit rods coaxial with the arc groove are fixedly installed on two opposite inner walls of the arc groove. A transmission groove is provided on the other inner wall of the arc groove. The adjusting member includes an arc-shaped adjustment plate slidably installed in the arc groove along the circumferential direction of the arc groove, and an adjusting driving member driving the arc-shaped adjustment plate to slide. Limiting sliding grooves slidably connected to the arc-shaped limit rods are provided on the two side walls of the arc-shaped adjustment plate close to the arc-shaped limit rod.

8. A vehicle unloading device according to claim 7, characterized in that: The adjusting drive component includes an arc-shaped rack fixedly mounted on the side of the arc-shaped adjusting plate away from the gas tank, an adjusting motor mounted on a fixed block, and a gear rotatably mounted in a transmission groove and meshing with the arc-shaped rack. The output shaft of the adjusting motor rotates through the fixed block and extends into the transmission groove to be fixedly connected to the gear, and the output shaft of the adjusting motor is coaxial with the gear.

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