Fixing and supporting device for vehicle bottom plate

Abstract

The invention discloses a vehicle bottom plate fixing and supporting device which comprises a base, a vehicle driving-in platform assembly is arranged on the outer side of the base, two top grooves are formed in the two top faces of the base, a supporting and fixing mechanism is horizontally and slidably arranged in each top groove, each supporting and fixing mechanism comprises a bottom sliding block, and the top face of each bottom sliding block is fixedly connected with a vertical bin. A sliding cavity is formed in the top end of the vertical bin; after the required height is reached, the locking plate rotates to the vertical direction, so that the positioning arc plate is inserted into the positioning arc groove at the position to lock the lifting block, and the pressing plate presses the power plate, so that the conical plugging block is inserted into the conical opening, the bottom of the piston and the inner cylinder body are sealed, and the position of the piston is also locked; the lifting block is supported through air pressure, so that the lifting block is supported by threads of the first lead screw, the positioning arc plate and the pneumatic supporting assembly in an air pressure mode, the supporting modes are more, the position of the lifting block is more reliable, and the safety of maintenance personnel is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of automobile repair equipment, in particular to a fixing support device for a vehicle bottom plate. Background Art

[0002] Automobile maintenance is a general term for automobile maintenance and repair. It is to use technical means to check the faulty automobile, find out the cause of the fault, and take certain measures to eliminate the fault and restore it to a certain performance and safety standard. The maintenance of the automobile floor is more common. When performing floor maintenance, the vehicle needs to be lifted and the floor needs to be fixed and supported so that the maintenance personnel can perform maintenance work at the bottom of the car. In this regard, the Chinese utility model patent with authorization announcement number CN216684392U discloses a chassis support device for automobile repair, including a support platform, a lighting component and an auxiliary support component. The auxiliary support component is The support assembly consists of a climbing ramp, a groove, a lifting platform, a fixed chassis, a clamping ring, a support sleeve, a rotating shaft and a support plate. The two ends of the support platform are equipped with climbing ramps, the top of the support platform is provided with a groove, a lifting platform is installed in the groove, a fixed chassis is symmetrically installed on the top of the support platform, a clamping ring is installed on the surface of the support platform, a support sleeve is provided inside the clamping ring, a rotating shaft is connected to the inner thread of the support sleeve, and a support plate is detachably installed on the top of the rotating shaft. The lifting platform is used to support and fix the bottom plate of the car, but the current fixed support device has the following defects:

[0003] At present, when supporting the vehicle floor, a lifting device is used for support, and it is mostly supported by threads, cylinders or hydraulics. The support method is single and there is no additional fixing and locking device. This is not reliable enough and the safety of maintenance personnel cannot be guaranteed.

[0004] For this reason, we propose a fixing support device for a vehicle floor to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a fixing support device for a vehicle floor to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a fixed support device for a vehicle floor, comprising a base, a vehicle entry platform assembly is arranged on the outer side of the base, two top grooves are arranged on the two top surfaces of the base, and a support fixing mechanism is arranged in each top groove for horizontal sliding;

[0007] The supporting and fixing mechanism comprises a bottom sliding block, the top surface of the bottom sliding block is fixedly connected to the vertical bin, a sliding cavity is provided at the top of the vertical bin, a lifting block is vertically slidably sleeved in the sliding cavity, the top of the lifting block is fixedly connected to the support plate, and a pneumatic support assembly is provided at the bottom center of the sliding cavity;

[0008] The pneumatic support assembly includes an outer cylinder body and an inner cylinder body, the inner cylinder body is arranged on the inner side of the outer cylinder body, a plurality of cross support rods are fixedly connected between the inner wall of the outer cylinder body and the outer wall of the inner cylinder body, the top end of the inner cylinder body is an open structure, the inner cylinder body is vertically slidably sleeved with a piston, the center of the top surface of the piston is vertically fixed to the bottom end of a push rod, the top center of the outer cylinder body is fixedly connected with an upper sealing sleeve, the inner side of the upper sealing sleeve is slidably sleeved with a push rod, the top end of the push rod is fixedly connected to a top plate, the top plate is fixedly connected to the bottom surface of the lifting block, the bottom sliding block is horizontally slidably connected to the bottom of the top groove, the piston is fixedly connected with a sealing ring around the piston, the sealing ring is interference fit with the inner groove of the inner cylinder body, and the outer cylinder body and the inner cylinder body are filled with inert gas.

[0009] Preferably, two side blocks are fixedly connected to the lower part of one side of the vertical warehouse, the bottom end of the locking plate is rotatably connected between the two side blocks, the top of the locking plate is fixedly connected to the side of the vertical warehouse near the arc-shaped plug plate, the top side wall of the vertical warehouse is provided with an arc-shaped opening, the arc-shaped plug plate passes through the arc-shaped opening, and a plurality of positioning arc grooves are evenly provided on the lifting block near the locking plate, and the arc-shaped plug plate is plugged into any one of the positioning arc grooves.

[0010] Preferably, an inner cavity is opened at the bottom of the vertical warehouse, a lower sealing sleeve is fixedly connected to the center of the bottom end of the outer cylinder body, the lower sealing sleeve is vertically slidably sleeved on a sleeve rod, the bottom end of the sleeve rod is located in the inner cavity and fixedly connected to a power plate, the power plate is vertically slidably sleeved on the inner cavity, a fan-shaped groove is opened on the bottom of the vertical warehouse close to the locking plate, the bottom end of the locking plate is horizontally fixedly connected to a pressure plate, the pressure plate is slidably connected in the fan-shaped groove, the fan-shaped groove is connected to the inner cavity, and the end of the pressure plate contacts the top surface of the end of the power plate.

[0011] Preferably, a tapered opening is opened at the center of the bottom end of the inner cylinder body, a tapered sealing block is fixedly sleeved on the circumference of the top end of the sleeve rod, the tapered sealing block is inserted into the tapered opening, the top surface area of ​​the tapered opening is larger than the bottom surface area, the top end of the sleeve rod is fixedly connected to a limit plate, a spring is fixedly connected between the bottom surface of the limit plate and the inner bottom surface of the inner cylinder body, a through hole is opened at the top end of the inner cavity, and the bottom end of the lower sealing sleeve is fixedly sleeved in the through hole.

[0012] Preferably, a side notch is provided on the side of the vertical warehouse close to the locking plate, the top of the side notch is fixedly connected to the first hinge seat, the first hinge seat is rotatably connected to the first hinge block, a side sliding groove is provided on the side of the locking plate close to the vertical warehouse, a side sliding block is slidably connected to the side sliding groove, a side sliding block has a side wall fixedly connected to the second hinge seat, the second hinge seat is rotatably connected to the second hinge block, a cylinder is fixedly connected between the second hinge block and the first hinge block, a guide column is fixedly connected to the side sliding groove, a guide hole is provided on the side sliding block, and the guide column is slidably sleeved into the guide hole.

[0013] Preferably, the bottom ends of the two first screw rods are rotatably connected on both sides of the bottom end of the sliding cavity, and two long holes are opened on the bottom surface of the lifting block corresponding to the ends of the two first screw rods, the bottom ends of the long holes are fixedly connected to the first threaded sleeve, and the first screw rod is threadedly connected to the first threaded sleeve. The bottom sliding block is located directly below the two first screw rods and is horizontally rotatably sleeved with two ball splines. The bottom end of each first screw rod is fixedly connected to a vertical shaft, and the bottom end of the vertical shaft is located inside the bottom sliding block and fixedly connected to the driven bevel gear, and the ball spline is sleeved with an active bevel gear, and the active bevel gear is meshedly connected to the driven bevel gear.

[0014] Preferably, the base is horizontally rotatably connected with two long shafts, the long shaft passes through two top grooves, the long shaft is located inside the top groove and is fixedly sleeved with a spline shaft, the spline shaft is slidably sleeved with a ball spline, a first transmission cavity is opened at one end inside the base, the two long shafts are located in the first transmission cavity and are respectively fixedly sleeved with a second synchronous pulley, the two second synchronous pulleys are sleeved with a second synchronous belt, the base is fixedly connected to a second servo reduction motor at one end close to the first transmission cavity, and the rotating shaft end of the second servo reduction motor is fixedly connected to one of the ends of the long shafts.

[0015] Preferably, two power grooves are provided on both side walls of the top groove, two power blocks are fixedly connected to the two sides of the bottom sliding block, the power block is horizontally slidably connected to the power groove, a third threaded sleeve is fixedly connected to the power block, the two power grooves on one of the top grooves are horizontally rotatably connected to two third screw rods, the two power grooves on the other top groove are horizontally rotatably connected to two fourth screw rods, the third screw rod is threadedly connected to the third threaded sleeve on the power block in one of the top grooves, the fourth screw rod is threadedly connected to the third threaded sleeve on the power block in the other top groove, the third screw rod is fixedly connected to the first rotating rod near one end of the fourth screw rod, and the fourth screw rod is fixedly connected to the first rotating rod near one end of the third screw rod The first end is fixedly connected to the second rotating rod, the first rotating rod end is fixedly connected to the first bevel gear, the second rotating rod end is fixedly connected to the second bevel gear, the base is located between the first rotating rod and the second rotating rod end, and is rotatably connected to the reversing bevel gear. The reversing bevel gear is meshed and connected to the first bevel gear and the second bevel gear on both sides. The two third screw ends are fixedly connected to two driving shafts, the two driving shaft ends are located in the first transmission cavity and fixedly connected to two first synchronous pulleys, and the first synchronous belts are sleeved on the two first synchronous pulleys. The base is fixedly connected to the first servo reduction motor at one end close to the first transmission cavity, and the rotating shaft end of the first servo reduction motor is fixedly connected to one of the driving shaft ends.

[0016] Preferably, a lying plate is provided on the top surface of the base for horizontal sliding movement, and two top sliding grooves are provided on both sides of the top surface of the base, and a total of two top sliding blocks are horizontally slidably connected in the two top sliding grooves, and the top sliding block is fixedly connected to the bottom end of the lying plate, and a plurality of rollers are fixedly connected to the bottom surfaces of the two ends of the lying plate, and the rollers roll and contact the top surface of the base, and two second screw rods are horizontally rotatably connected in the two top sliding grooves, and the second threaded sleeve is fixedly connected to the top sliding block, and the second screw rod is threadedly connected to the second threaded sleeve, and a second transmission cavity is provided inside the end portion of the base, and the two second screw rods are fixedly connected to two shaft columns near one end of the second transmission cavity, and the two ends of the shaft columns are located in the second transmission cavity and fixedly connected to two driven pulleys, and the base is fixedly connected to a third servo reduction motor near one end of the second transmission cavity, and the rotating shaft end of the third servo reduction motor is located in the second transmission cavity and fixedly connected to two driving pulleys, and the driving pulley and the driven pulley are sleeved with a third synchronous belt.

[0017] Preferably, the vehicle entry platform assembly includes two straight plate parts, the two straight plate parts are located on both sides of the base, two inclined plate parts are fixedly connected at both ends of each straight plate part, a connecting block is horizontally fixedly connected between the bottom ends of the inclined plate parts on the two straight plate parts, the bottom ends of the inclined plate parts on the two straight plate parts are fixedly connected to the end plates, the bottom surfaces of the straight plate parts are fixedly connected to a plurality of middle support blocks, the middle support blocks are fixedly connected to the side walls of the base, and the bottom surfaces of the inclined plate parts are fixedly connected to the side support blocks.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] When the locking plate of the present invention is in an oblique direction, the pressure plate does not contact the power plate. In this way, under the action of the spring, the conical blocking block leaves the conical mouth, and the piston can move in the inner cylinder body. At the same time, because the area of ​​the top surface of the piston is smaller than that of the bottom surface, the bottom of the piston is subjected to a greater pressure of the inert gas, which will generate an upward supporting force, which is convenient for assisting the lifting work. After reaching the required height, the locking plate is rotated to a vertical direction, so that the positioning arc plate is inserted into the positioning arc groove at this position to lock the lifting block, and the pressure plate presses the power plate, so that the conical blocking block is inserted into the conical mouth, so that the bottom of the piston is sealed with the inner cylinder body, and the piston position is also locked, and the lifting block is supported by air pressure, so that the lifting block is supported by the thread of the first screw rod, the positioning arc plate, and the air pressure of the pneumatic support assembly. There are more support methods, which makes the position of the lifting block more reliable and ensures the safety of maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure in the first and second embodiments of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the base in the first and second embodiments of the present invention;

[0022] Figure 3It is a structural schematic diagram of the supporting and fixing mechanism in the first and second embodiments of the present invention;

[0023] Figure 4 It is a schematic diagram of the cross-section structure of the support and fixing mechanism in the first and second embodiments of the present invention;

[0024] Figure 5 It is a schematic diagram of the cross-section structure of the other side of the supporting and fixing mechanism in the first and second embodiments of the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of the structure at center A;

[0026] Figure 7 For the present invention Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0027] Figure 8 It is a schematic diagram of a horizontal cross-section structure of the lower part of the base in the second embodiment of the present invention;

[0028] Fig. 9 It is a schematic diagram of the horizontal cross-section structure of the upper part of the base in the second embodiment of the present invention.

[0029] In the figure: 1, base; 2, supporting and fixing mechanism; 3, vehicle entry platform assembly; 11, top groove; 12, lying board; 13, power groove; 14, power block; 15, third screw rod; 16, fourth screw rod; 17, third threaded sleeve; 18, first rotating rod; 19, second rotating rod; 110, first bevel gear; 111, second bevel gear; 112, reversing bevel gear; 113, long shaft; 114, spline shaft; 115, top slide groove; 116, top slide block; 117, second screw rod; 118, second threaded sleeve; 119, roller; 120 , first transmission cavity; 121, first servo reduction motor; 122, second servo reduction motor; 123, drive shaft; 124, first synchronous pulley; 125, first synchronous belt; 126, second synchronous belt; 127, second synchronous belt; 128, second transmission cavity; 129, shaft column; 130, driven pulley; 131, third servo reduction motor; 132, driving pulley; 133, third synchronous belt; 21, bottom slider; 22, vertical bin; 23, slide cavity; 24, lifting block; 25, support plate; 26, pneumatic support assembly; 27, first a thread rod; 28, a long hole; 29, a first threaded sleeve; 210, a ball spline; 212, a vertical shaft; 213, an active bevel gear; 214, a driven bevel gear; 215, an arc-shaped insert; 216, a pressure plate; 217, an inner cavity; 218, a fan-shaped groove; 219, a through hole; 220, a side notch; 221, a first hinge seat; 222, a first hinge block; 223, a side slide groove; 224, a side slide block; 225, a second hinge seat; 226, a second hinge block; 227, a cylinder; 228, an arc-shaped opening; 229, a positioning arc groove; 230, a guide column; 23 1. Guide hole; 232. Side block; 233. Locking plate; 261. Outer cylinder body; 262. Inner cylinder body; 263. Cross support rod; 264. Piston; 265. Push rod; 266. Upper sealing sleeve; 267. Top plate; 268. Sealing ring; 269. Conical mouth; 2610. Lower sealing sleeve; 2611. Sleeve rod; 2612. Conical blocking block; 2613. Limiting plate; 2614. Spring; 2615. Power plate; 31. Straight plate portion; 32. Inclined plate portion; 33. Side support block; 34. Middle support block; 35. Connecting block; 36. End plate. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1:

[0032] See also Figure 1-7The present invention provides a technical solution: a fixed support device for a vehicle floor, comprising a base 1, a vehicle entry platform assembly 3 is arranged on the outer side of the base 1, two top grooves 11 are provided on the two top surfaces of the base 1, and a support fixing mechanism 2 is arranged in each top groove 11 for horizontal sliding;

[0033] The supporting and fixing mechanism 2 includes a bottom slide block 21, the top surface of the bottom slide block 21 is fixedly connected to the vertical bin 22, a slide cavity 23 is provided at the top of the vertical bin 22, a lifting block 24 is vertically slidably sleeved in the slide cavity 23, the top of the lifting block 24 is fixedly connected to the support plate 25, and a pneumatic support assembly 26 is provided at the bottom center of the slide cavity 23;

[0034] The pneumatic support assembly 26 includes an outer cylinder body 261 and an inner cylinder body 262. The inner cylinder body 262 is arranged on the inner side of the outer cylinder body 261. A plurality of horizontal support rods 263 are fixedly connected between the inner wall of the outer cylinder body 261 and the outer wall of the inner cylinder body 262. The top of the inner cylinder body 262 is an open structure. The inner cylinder body 262 is vertically slidably sleeved with a piston 264. The center of the top surface of the piston 264 is vertically fixedly connected to the bottom end of a push rod 265. The center of the top of the outer cylinder body 261 is fixedly connected to an upper sealing sleeve 266. The inner side of the upper sealing sleeve 266 is slidably sleeved with the push rod 265. The top of the push rod 265 is fixedly connected to a top plate 267. The top plate 267 is fixedly connected to the bottom surface of the lifting block 24, the bottom slider 21 is horizontally slidably connected to the bottom of the top groove 11, the sealing ring 268 is fixedly connected to the periphery of the piston 264, the sealing ring 268 is interference fit with the inner groove of the inner cylinder body 262, the outer cylinder body 261 and the inner cylinder body 262 are filled with inert gas, and the lifting block 24 is supported by air pressure through the pneumatic support assembly 26. This is because the top surface area of ​​the piston 264 is smaller than the bottom surface, so the bottom of the piston 264 is subjected to greater pressure from the inert gas, which will generate an upward supporting force to support the lifting block 24.

[0035] Embodiment 2:

[0036] See also Figure 1-9 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. Two side blocks 232 are fixedly connected to the lower part of one side of the vertical warehouse 22. The bottom end of the locking plate 233 is rotatably connected between the two side blocks 232. The top of the locking plate 233 is fixedly connected to the arc-shaped plug plate 215 near the side of the vertical warehouse 22. An arc-shaped opening 228 is provided on the side wall of the top of the vertical warehouse 22. The arc-shaped plug plate 215 passes through the arc-shaped opening 228. A plurality of positioning arc grooves 229 are evenly provided on the side of the lifting block 24 near the locking plate 233. The arc-shaped plug plate 215 is plugged into any one of the positioning arc grooves 229. After the locking plate 233 is rotated to fit closely against the vertical warehouse 22, the arc-shaped plug plate 215 is inserted into the positioning arc groove 229 to perform locking work, thereby limiting the lifting block 24.

[0037] An inner cavity 217 is opened at the bottom of the vertical warehouse 22, and the lower sealing sleeve 2610 is fixedly connected to the center of the bottom end of the outer cylinder body 261. The lower sealing sleeve 2610 is vertically slidably sleeved with the sleeve rod 2611. The bottom end of the sleeve rod 2611 is located in the inner cavity 217 and is fixedly connected to the power plate 2615. The power plate 2615 is vertically slidably sleeved with the inner cavity 217. A fan-shaped groove 218 is opened on the side of the bottom of the vertical warehouse 22 close to the locking plate 233. The bottom end of the locking plate 233 is horizontally fixedly connected to the pressure plate 216. The pressure plate 216 is slidably connected in the fan-shaped groove 218. The fan-shaped groove 218 is connected to the inner cavity 217, and the end of the pressure plate 216 contacts the top surface of the end of the power plate 2615.

[0038] A conical opening 269 is provided at the center of the bottom end of the inner cylinder body 262, and a conical blocking block 2612 is fixedly sleeved on the top peripheral side of the sleeve rod 2611, and the conical blocking block 2612 is inserted into the conical opening 269. The top surface area of ​​the conical opening 269 is larger than the bottom surface area. The top end of the sleeve rod 2611 is fixedly connected to a limit plate 2613, and a spring 2614 is fixedly connected between the bottom surface of the limit plate 2613 and the inner bottom surface of the inner cylinder body 262. A through hole 219 is provided at the top end of the inner cavity 217, and the bottom end of the lower sealing sleeve 2610 is fixedly sleeved in the through hole 219. When the locking plate 233 is in an oblique direction, the pressure plate 216 does not contact the power plate 2615, so that under the action of the spring 2614, the conical blocking block 2612 leaves the conical opening 26 9. The piston 264 can move in the inner cylinder body 262. At the same time, since the top surface area of ​​the piston 264 is smaller than the bottom surface, the bottom of the piston 264 is subjected to a greater pressure from the inert gas, which will generate an upward supporting force to facilitate the auxiliary lifting work. After reaching the required height, the locking plate 233 rotates to the vertical direction, so that the positioning arc plate 215 is inserted into the positioning arc groove 229 at this position to lock the lifting block 24, and the pressure plate 216 presses the power plate 2615, so that the conical blocking block 2612 is inserted into the conical mouth 269, so that the bottom of the piston 264 and the inner cylinder body 262 are sealed, and the position of the piston 264 is also locked, and the lifting block 24 is supported by air pressure.

[0039] A side notch 220 is provided on the side of the vertical warehouse 22 close to the locking plate 233, and the top of the side notch 220 is fixedly connected to the first hinge seat 221, and the first hinge seat 221 is rotatably connected to the first hinge block 222. A side sliding groove 223 is provided on the side of the locking plate 233 close to the vertical warehouse 22, and a side slider 224 is slidably connected in the side sliding groove 223. The side slider 224 has a side wall fixedly connected to the second hinge seat 225, and the second hinge seat 225 is rotatably connected to the second hinge block 226. A cylinder 227 is fixedly connected between the second hinge block 226 and the first hinge block 222. A guide column 230 is fixedly connected in the side sliding groove 223, and a guide hole 231 is provided on the side slider 224. The guide column 230 is slidably sleeved in the guide hole 231.

[0040] The bottom ends of the two first screw rods 27 are rotatably connected on both sides of the bottom end of the sliding cavity 23. Two long holes 28 are provided on the bottom surface of the lifting block 24 at positions corresponding to the ends of the two first screw rods 27. The bottom ends of the long holes 28 are fixedly connected to the first threaded sleeves 29. The first screw rods 27 are threadedly connected to the first threaded sleeves 29. The bottom sliding block 21 is located directly below the two first screw rods 27 and is horizontally rotatably sleeved with two ball splines 210. The bottom end of each first screw rod 27 is fixedly connected to a vertical shaft 212. The bottom end of the vertical shaft 212 is located inside the bottom sliding block 21 and is fixedly connected to the driven bevel gear 214. The driving bevel gear 213 is sleeved on the ball spline 210. The driving bevel gear 213 is meshed and connected to the driven bevel gear 214, and the lifting block 24 is driven to rise and fall through the first screw rods 27.

[0041] Two long shafts 113 are connected and rotated horizontally inside the base 1. The long shaft 113 passes through the two top grooves 11. The long shaft 113 is located inside the top groove 11 and is fixedly sleeved with a spline shaft 114. The spline shaft 114 is slidably sleeved with a ball spline 210. A first transmission cavity 120 is opened at one end inside the base 1. The two long shafts 113 are located in the first transmission cavity 120 and are respectively fixedly sleeved with a second synchronous pulley 126. The two second synchronous pulleys 126 are sleeved with a second synchronous belt 127. The base 1 is fixedly connected to a second servo reduction motor 122 at one end close to the first transmission cavity 120. The shaft end of the second servo reduction motor 122 is fixedly connected to one end of the long shaft 113, and the ball spline 210 is driven to rotate by the second servo reduction motor 122.

[0042] Two power grooves 13 are provided on both side walls of the top groove 11, two power blocks 14 are fixedly connected on both sides of the bottom sliding block 21, the power blocks 14 are horizontally slidably connected to the power grooves 13, a third threaded sleeve 17 is fixedly connected to the power block 14, two power grooves 13 on one of the top grooves 11 are horizontally rotatably connected to two third screw rods 15, two power grooves 13 on the other top groove 11 are horizontally rotatably connected to two fourth screw rods 16, the third screw rod 15 is threadedly connected to the third threaded sleeve 17 on the power block 14 in one of the top grooves 11, the fourth screw rod 16 is threadedly connected to the third threaded sleeve 17 on the power block 14 in the other top groove 11, one end of the third screw rod 15 close to the fourth screw rod 16 is fixedly connected to the first rotating rod 18, one end of the fourth screw rod 16 close to the third screw rod 15 is fixedly connected to the second rotating rod 19, the end of the first rotating rod 18 is fixedly connected to the first bevel gear 110, and the end of the second rotating rod 19 is fixedly connected to the second bevel gear 1 11. The interior of the base 1 is located between the ends of the first rotating rod 18 and the second rotating rod 19 and is rotatably connected to the reversing bevel gear 112. The two sides of the reversing bevel gear 112 are meshed and connected to the first bevel gear 110 and the second bevel gear 111. The ends of the two third screw rods 15 are fixedly connected to the two driving shafts 123. The ends of the two driving shafts 123 are located in the first transmission cavity 120 and are fixedly connected to the two first synchronous pulleys 124. The first synchronous belts 125 are sleeved on the two first synchronous pulleys 124. The end of the base 1 close to the first transmission cavity 120 is fixedly connected to the first servo reduction motor 121. The rotating shaft end of the first servo reduction motor 121 is fixedly connected to one of the ends of the driving shafts 123. The two supporting and fixing mechanisms 2 are driven to change their horizontal positions through the first servo reduction motor 121. Due to the action of the reversing bevel gear 112, the two supporting and fixing mechanisms 2 move in opposite directions, which is convenient for supporting vehicle floors of different lengths.

[0043] The top surface of the base 1 is horizontally slidably provided with a lying plate 12, two top sliding grooves 115 are provided on both sides of the top surface of the base 1, and two top sliding blocks 116 are horizontally slidably connected in the two top sliding grooves 115. The top sliding blocks 116 are fixedly connected to the bottom end of the lying plate 12, and a plurality of rollers 119 are fixedly connected to the bottom surfaces of both ends of the lying plate 12. The rollers 119 roll and contact the top surface of the base 1, and two second screw rods 117 are horizontally rotatably connected in the two top sliding grooves 115. A second threaded sleeve 118 is fixedly connected to the top sliding block 116, and the second screw rod 117 is threadedly connected to the second threaded sleeve 118. A second transmission cavity 128 is provided inside the end of the base 1 The two second screw rods 117 are fixedly connected to two shaft columns 129 at one end close to the second transmission chamber 128, and the ends of the two shaft columns 129 are located in the second transmission chamber 128 and fixedly connected to two driven pulleys 130. The base 1 is fixedly connected to a third servo reduction motor 131 at one end close to the second transmission chamber 128. The rotating shaft end of the third servo reduction motor 131 is located in the second transmission chamber 128 and fixedly connected to two driving pulleys 132. The third synchronous belt 133 is sleeved on the driving pulley 132 and the driven pulley 130, which is convenient for adjusting the horizontal position of the lying board 12. The staff lies on the lying board 12 to perform maintenance work.

[0044] The vehicle entry platform assembly 3 includes two straight plate portions 31, which are located on both sides of the base 1. Two inclined plate portions 32 are fixedly connected at both ends of each straight plate portion 31. A connecting block 35 is horizontally fixedly connected between the bottom ends of the inclined plate portions 32 on the two straight plate portions 31. The bottom ends of the inclined plate portions 32 on the two straight plate portions 31 are fixedly connected to end plates 36. A plurality of middle support blocks 34 are fixedly connected to the bottom surfaces of the straight plate portions 31. The middle support blocks 34 are fixedly connected to the side walls of the base 1. The bottom surfaces of the inclined plate portions 32 are fixedly connected to the side support blocks 33.

[0045] Embodiment 3:

[0046] See also Figure 1-9 , which is the third embodiment of the present invention. This embodiment is based on the above two embodiments. When the present invention is used, the vehicle enters the straight plate portion 31 through the inclined plate portion 32 from the end plate 36, and then the second servo reduction motor 122 is started, and the lifting block 24 is driven to rise through the first screw rod 27, and the vehicle bottom plate support is lifted. After reaching the height, the cylinder 227 drives the locking plate 233 to lock the position of the lifting block 24, and then the maintenance personnel lie on the lying plate 12 to perform maintenance work; in the present invention, when the locking plate 233 is in an oblique direction, the pressure plate 216 does not contact the power plate 2615, so that under the action of the spring 2614, the conical blocking block 2612 leaves the conical mouth 269, and the piston 264 can move in the inner cylinder body 262. At the same time, because the top surface area of ​​the piston 264 is smaller than the bottom surface, the piston 264 The bottom is subjected to greater pressure from the inert gas, which will generate an upward supporting force, facilitating the auxiliary lifting work. After reaching the required height, the locking plate 233 rotates to the vertical direction, so that the positioning arc plate 215 is inserted into the positioning arc groove 229 at this position to lock the lifting block 24, and the pressure plate 216 presses the power plate 2615, so that the conical blocking block 2612 is inserted into the conical mouth 269, so that the bottom of the piston 264 and the inner cylinder body 262 are sealed, and the position of the piston 264 is also locked, and the lifting block 24 is supported by air pressure. In this way, the lifting block 24 will be supported by the threaded support of the first screw 27, the support of the positioning arc plate 215, and the air pressure support of the pneumatic support assembly 26. There are more support methods, which makes the position of the lifting block 24 more reliable and ensures the safety of maintenance personnel.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed support device for a vehicle floor, comprising a base (1), a vehicle entry platform assembly (3) being arranged outside the base (1), characterized in that: Two top grooves (11) are provided on the two top surfaces of the base (1), and a supporting and fixing mechanism (2) is horizontally slidably arranged in each of the top grooves (11); The supporting and fixing mechanism (2) comprises a bottom sliding block (21), the top surface of the bottom sliding block (21) is fixedly connected to the vertical bin (22), the top of the vertical bin (22) is provided with a sliding cavity (23), a lifting block (24) is vertically slidably sleeved in the sliding cavity (23), the top of the lifting block (24) is fixedly connected to a supporting plate (25), and a pneumatic supporting assembly (26) is arranged at the bottom center of the sliding cavity (23); The pneumatic support assembly (26) comprises an outer cylinder body (261) and an inner cylinder body (262), wherein the inner cylinder body (262) is arranged on the inner side of the outer cylinder body (261), and a plurality of transverse support rods (263) are fixedly connected between the inner side wall of the outer cylinder body (261) and the outer side wall of the inner cylinder body (262), and the top end of the inner cylinder body (262) is an open structure, and a piston (264) is vertically slidably sleeved in the inner cylinder body (262), and the center of the top surface of the piston (264) is vertically fixedly connected to the bottom end of the push rod (265), and the center of the top end of the outer cylinder body (261) is fixedly connected to the bottom end of the push rod (265). An upper sealing sleeve (266) is fixedly connected, and the inner side of the upper sealing sleeve (266) is slidably sleeved with a push rod (265), and the top end of the push rod (265) is fixedly connected to a top plate (267), and the top plate (267) is fixedly connected to the bottom surface of the lifting block (24). The bottom sliding block (21) is horizontally slidably connected to the bottom of the top groove (11), and the peripheral side of the piston (264) is fixedly connected to a sealing ring (268), and the sealing ring (268) is interference fit with the inner groove of the inner cylinder body (262), and the outer cylinder body (261) and the inner cylinder body (262) are filled with inert gas.

2. A vehicle floor fixing support device according to claim 1, characterized in that: Two side blocks (232) are fixedly connected to the lower part of one side of the vertical bin (22); the bottom ends of the locking plates (233) are rotatably connected between the two side blocks (232); the top of the locking plates (233) is fixedly connected to the arc-shaped plug plate (215) near one side of the vertical bin (22); an arc-shaped opening (228) is provided on the top side wall of the vertical bin (22); the arc-shaped plug plate (215) passes through the arc-shaped opening (228); a plurality of positioning arc grooves (229) are evenly provided on one side of the lifting block (24) near the locking plates (233); the arc-shaped plug plate (215) is plugged into any one of the positioning arc grooves (229).

3. A vehicle floor fixing support device according to claim 2, characterized in that: An inner cavity (217) is provided at the bottom of the vertical bin (22); a lower sealing sleeve (2610) is fixedly connected to the center of the bottom end of the outer cylinder body (261); the lower sealing sleeve (2610) is vertically slidably sleeved on a sleeve rod (2611); the bottom end of the sleeve rod (2611) is located in the inner cavity (217) and is fixedly connected to a power plate (2615); the power plate (2615) is vertically slidably sleeved on the inner cavity (217); a fan-shaped groove (218) is provided at the bottom of the vertical bin (22) near the locking plate (233); the bottom end of the locking plate (233) is horizontally fixedly connected to a pressure plate (216); the pressure plate (216) is slidably connected in the fan-shaped groove (218); the fan-shaped groove (218) is communicated with the inner cavity (217); and the end of the pressure plate (216) contacts the top surface of the end of the power plate (2615).

4. A vehicle floor fixing support device according to claim 3, characterized in that: A conical opening (269) is provided at the center of the bottom end of the inner cylinder body (262); a conical sealing block (2612) is fixedly sleeved on the circumferential side of the top end of the sleeve rod (2611); the conical sealing block (2612) is inserted into the conical opening (269); the top surface area of ​​the conical opening (269) is larger than the bottom surface area; a limiting plate (2613) is fixedly connected to the top end of the sleeve rod (2611); a spring (2614) is fixedly connected between the bottom surface of the limiting plate (2613) and the inner bottom surface of the inner cylinder body (262); a through hole (219) is provided at the top end of the inner cavity (217); and the bottom end of the lower sealing sleeve (2610) is fixedly sleeved in the through hole (219).

5. The fixing support device for a vehicle floor according to claim 2, characterized in that: A side notch (220) is provided on a side of the vertical bin (22) close to the locking plate (233), the top of the side notch (220) is fixedly connected to a first hinge seat (221), the first hinge seat (221) is rotatably connected to a first hinge block (222), a side sliding groove (223) is provided on a side of the locking plate (233) close to the vertical bin (22), a side sliding block (224) is slidably connected in the side sliding groove (223), a side wall of the side sliding block (224) is fixedly connected to a second hinge seat (225), the second hinge seat (225) is rotatably connected to a second hinge block (226), a cylinder (227) is fixedly connected between the second hinge block (226) and the first hinge block (222), a guide column (230) is fixedly connected in the side sliding groove (223), a guide hole (231) is provided on the side sliding block (224), and the guide column (230) is slidably sleeved in the guide hole (231).

6. A vehicle floor fixing support device according to claim 1, characterized in that: The bottom ends of the sliding cavity (23) are rotatably connected to the bottom ends of the two first screw rods (27) on both sides, and the bottom surface of the lifting block (24) is provided with two long holes (28) at positions corresponding to the ends of the two first screw rods (27). The bottom ends of the long holes (28) are fixedly connected to the first threaded sleeves (29), and the first screw rods (27) are threadedly connected to the first threaded sleeves (29). The bottom sliding block (21) is located directly below the two first screw rods (27) and is horizontally rotatably sleeved with two ball splines (210). The bottom end of each first screw rod (27) is fixedly connected to a vertical shaft (212), and the bottom end of the vertical shaft (212) is located inside the bottom sliding block (21) and is fixedly connected to a driven bevel gear (214). The ball spline (210) is sleeved with an active bevel gear (213), and the active bevel gear (213) is meshedly connected to the driven bevel gear (214).

7. A vehicle floor fixing support device according to claim 6, characterized in that: Two long shafts (113) are connected in a horizontally rotatable manner in the base (1), the long shafts (113) pass through the two top grooves (11), the long shafts (113) are located in the top grooves (11) and are fixedly sleeved with a spline shaft (114), the spline shaft (114) is slidably sleeved with a ball spline (210), a first transmission cavity (120) is opened at one end inside the base (1), the two long shafts (113) are located in the first transmission cavity (120) and are respectively fixedly sleeved with a second synchronous pulley (126), the two second synchronous pulleys (126) are sleeved with a second synchronous belt (127), the base (1) is fixedly connected to a second servo reduction motor (122) at one end close to the first transmission cavity (120), and the rotating shaft end of the second servo reduction motor (122) is fixedly connected to one end of the long shaft (113).

8. The fixing support device for a vehicle floor according to claim 7, characterized in that: Two power grooves (13) are provided on the two side walls of the top groove (11), two power blocks (14) are fixedly connected to the two sides of the bottom sliding block (21), the power blocks (14) are horizontally slidably connected to the power grooves (13), a third threaded sleeve (17) is fixedly connected to the power blocks (14), one of the two power grooves (13) on the top groove (11) is horizontally rotatably connected to the two third screw rods (15), and the other of the two power grooves (13) on the top groove (11) is horizontally rotatably connected to the two third screw rods (15). The two fourth screw rods (16) are connected, the third screw rod (15) is threadedly connected to a third threaded sleeve (17) on a power block (14) in one of the top grooves (11), the fourth screw rod (16) is threadedly connected to a third threaded sleeve (17) on a power block (14) in another top groove (11), one end of the third screw rod (15) close to the fourth screw rod (16) is fixedly connected to a first rotating rod (18), and one end of the fourth screw rod (16) close to the third screw rod (15) is fixedly connected to A second rotating rod (19), the end of the first rotating rod (18) is fixedly connected to the first bevel gear (110), the end of the second rotating rod (19) is fixedly connected to the second bevel gear (111), the base (1) is located between the ends of the first rotating rod (18) and the second rotating rod (19) and is rotatably connected to a reversing bevel gear (112), the two sides of the reversing bevel gear (112) are meshedly connected to the first bevel gear (110) and the second bevel gear (111), the ends of the two third screw rods (15) are fixedly connected to two drive shafts (123), the ends of the two drive shafts (123) are located in the first transmission cavity (120) and are fixedly connected to two first synchronous pulleys (124), the first synchronous belts (125) are sleeved on the two first synchronous pulleys (124), the base (1) is fixedly connected to a first servo reduction motor (121) at one end close to the first transmission cavity (120), and the rotating shaft end of the first servo reduction motor (121) is fixedly connected to one end of the drive shaft (123).

9. The fixing support device for a vehicle floor according to claim 1, characterized in that: The top surface of the base (1) is provided with a lying plate (12) for horizontal sliding, two top sliding grooves (115) are provided on both sides of the top surface of the base (1), two top sliding grooves (115) are horizontally slidably connected in the two top sliding grooves (115) to a total of two top sliding blocks (116), the top sliding blocks (116) are fixedly connected to the bottom end of the lying plate (12), a plurality of rollers (119) are fixedly connected to the bottom surfaces of both ends of the lying plate (12), the rollers (119) roll in contact with the top surface of the base (1), two second screw rods (117) are horizontally rotatably connected in the two top sliding grooves (115), a second threaded sleeve (118) is fixedly connected to the top sliding block (116), and the second screw rod (117) is threadedly connected to the second threaded sleeve (118). 8), a second transmission chamber (128) is provided inside the end of the base (1), two second screw rods (117) are fixedly connected to two shaft columns (129) at one end close to the second transmission chamber (128), the ends of the two shaft columns (129) are located in the second transmission chamber (128) and are fixedly connected to two driven pulleys (130), and one end of the base (1) close to the second transmission chamber (128) is fixedly connected to a third servo reduction motor (131), the rotating shaft end of the third servo reduction motor (131) is located in the second transmission chamber (128) and is fixedly connected to two driving pulleys (132), and a third synchronous belt (133) is sleeved on the driving pulley (132) and the driven pulley (130).

10. The fixing support device for a vehicle floor according to claim 1, characterized in that: The vehicle entry platform assembly (3) comprises two straight plate portions (31), the two straight plate portions (31) are located at two sides of the base (1), two ends of each straight plate portion (31) are fixedly connected to two inclined plate portions (32), a connecting block (35) is horizontally fixedly connected between the bottom ends of the inclined plate portions (32) on the two straight plate portions (31), the bottom ends of the inclined plate portions (32) on the two straight plate portions (31) are fixedly connected to an end plate (36), the bottom surface of the straight plate portion (31) is fixedly connected to a plurality of middle support blocks (34), the middle support blocks (34) are fixedly connected to the side wall of the base (1), and the bottom surface of the inclined plate portion (32) is fixedly connected to the side support block (33).

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