68results about How to "No frequent replacement" patented technology

This utility model relates to the field of chemical cooling technology, and provides a production device for cooling chemical mixtures, including a reaction vessel. A cooling chamber is provided on the outside of the reaction vessel, and a cooling pipe is provided inside the cooling chamber. The cooling pipe is wound around the outer wall of the reaction vessel. A stirring mechanism is provided inside the reaction vessel. Heat dissipation mechanisms are provided on both sides of the cooling chamber on the outside of the reaction vessel. By providing a stirring mechanism and a heat dissipation mechanism, this utility model can provide forced air cooling for the cooling pipe and cooling medium, accelerating the diffusion of heat to the environment. While improving the cooling effect, only one drive motor is needed to drive the stirring blades and the cooling fan at the same time, reducing the number of power devices, simplifying the equipment structure, and reducing energy consumption and maintenance costs.

The utility model discloses a motor rotor shaft turning clamp that can be self-adaptive and tightly hold and flexibly position, relates to the field of machining, and is composed of Morse taper, external thread connecting shaft, spring collet, threaded sleeve and adjusting sleeve and other components for connecting with the main shaft of machine tool. The sliding cavity of the front end of the external thread connecting shaft is provided with a sliding sleeve and a telescopic spring, and the sliding sleeve is fixedly connected with the spring collet. The sleeve sleeve of the front end of the threaded sleeve is sleeved outside the spring collet, and the inner wall of the front end is provided with a conical surface that is matched with the conical head of the spring collet. The adjusting sleeve is connected with the threaded sleeve through threads, and can drive the limiting sleeve to push the spring collet to move. During use, rotating the adjusting sleeve makes the spring collet move backward, and the spring collet is tightened under the action of the conical surface, the rotor shaft is self-adaptively and tightly held, and the telescopic spring realizes flexible positioning and compensates for the axial and angular deviation. The clamp can automatically adapt to the rotor shaft with a diameter tolerance within a certain range, has high self-centering precision, is suitable for high-precision turning machining of conventional rotor shafts, and has simple structure and convenient maintenance.

The utility model discloses a multifunctional knitting yarn with line hoop belongs to knitting yarn field, and the bottom base subassembly, installation component, rotating component and placing component among them are included, installation component fixedly connected in the top of bottom base subassembly, rotating component installation is connected in one side of installation component, placing component fixedly connected in one side of rotating component, through the cooperation of above -mentioned each device, when placing the yarn cylinder, press the torsional spring and let the spacing plate move, conveniently place the yarn cylinder, and the torsional spring resets the spacing plate after loosening the spacing plate and limits the yarn cylinder, and the cylinder is funnel type structure simultaneously, when placing the yarn cylinder, can place the yarn cylinder of different diameter, can be flexibly adjusted according to yarn cylinder diameter, need not frequently change line hoop, reduce the replacement operation of staff, reduce the complicated degree of work content, effectively save the overall working time, satisfy the use demand that the user can carry out.

The application belongs to the technical field of laser processing, and relates to a positioning jig and a laser processing device. The positioning jig provided by the application comprises a positioning assembly and a pushing assembly. The positioning assembly comprises a positioning piece, a plurality of positioning notches for positioning a workpiece are arranged on the positioning piece, the positioning piece is provided with a first positioning surface, a second positioning surface and a bearing surface, the first positioning surface and the second positioning surface are both perpendicular to the bearing surface, the first positioning surface and the second positioning surface intersect to form a triangular positioning notch, the bearing surface is used for supporting the workpiece, and the workpiece is convex to the bearing surface. The pushing assembly is used for pushing the workpiece in the positioning notch, so that the side wall of the workpiece abuts against the first positioning surface and the second positioning surface, and the positioning of the workpiece is realized. The laser processing device provided by the application comprises the above positioning jig. The positioning jig and the laser processing device provided by the application can be adapted to workpieces of various sizes, production cost is reduced, and production efficiency is improved.

The utility model discloses an edge grinding device for circuit board processing, including frame, be equipped with rotating platform and first motor for driving rotating platform rotation respectively on the frame, be equipped with positioning mechanism on rotating platform, be equipped with edge grinding mechanism and moving mechanism for driving edge grinding mechanism displacement respectively on one side of rotating platform of frame top, wherein, positioning mechanism includes six positioning assembly, adjusting member and vacuum chuck, six positioning assembly is uniformly distributed on rotating platform along circumference, adjusting member sets up on rotating platform can drive six positioning assembly synchronous relative rotating platform center and make close or far displacement, vacuum chuck sets up on rotating platform, positioning assembly includes movable block and the positioning pin of elastic telescopic setting on movable block, and positioning pin lower extreme extends to rotating platform below and is equipped with fixed shaft, and positioning pin is elastically convex on movable block top initially, the arc top block of being equipped with correspondingly below edge grinding mechanism on the frame.

The utility model discloses an optical module shell assembly fixture, including jig frock body, the jig frock body includes support mesa, positioning block, this positioning block is arranged in the upper surface of support mesa, positioning block is equipped with two groups, two groups positioning block vertical arrangement, clamping mechanism, this clamping mechanism is arranged in the upper surface of support mesa, clamping mechanism is equipped with two groups, two groups clamping mechanism vertical arrangement, jacking screw, jacking screw is equipped with multiple groups, multiple groups jacking screw corresponds to the preset placement area of optical module shell arrangement, jacking screw is connected with support mesa screw thread, the utility model discloses through the rotation jacking screw adjustment its end surface height, and then control the protruding height after shell clamping, has reduced the labor intensity, the cost while has improved the efficiency, has promoted the versatility of jig frock.

This utility model relates to an auxiliary device for conveying bearing rings in bearing production. The adjusting rod can slide left and right along the support member, and the guide plate can slide back and forth along the first sliding member. Combined with the positioning function of the elastic positioning component, the distance and position between the two guide plates can be flexibly adjusted to adapt to bearing rings of different diameters and thicknesses. The auxiliary device does not need to be frequently replaced, which reduces equipment costs and improves production efficiency. The adjusting rod and the first sliding member are hinged, allowing the guide plate to rotate around the hinge point to adjust the angle, thereby forming a figure-eight structure between the two guide plates. This figure-eight structure can automatically gather the bearing rings towards the centerline or a specified direction during the conveying process, preventing the bearing rings from deviating or scattering, ensuring stable conveying posture, and providing a precise positioning basis for subsequent processing, inspection and other processes.

This application relates to a hoisting tool for small-sized seedlings, belonging to the field of seedling hoisting. The device includes two symmetrical connecting rods, which are rotatably connected to a rotating rod via a pivot. The surfaces of the two rotating rods are rotatably connected via the pivot. A chain is provided on the rear side of each rotating rod, and a fixing block is provided at the top of the rear rotating rod. A slidable sliding pin is provided through the right side of the surface of the fixing block. One end of the chain is fitted onto the surface of the sliding pin. Circular columns are fixedly connected to both the front and rear sides of the sliding pin, and a circular block is fixedly connected to the bottom of the sliding pin. This application allows the connecting rods, rotating rods, and arc-shaped clamps to work together, enabling the two arc-shaped clamps to directly clamp small soil balls, wrap the chain around the surface of the tree trunk, and then, through the cooperation of hooks, sliding pins, and circular columns, the two ends of the chain are hooked onto the surfaces of the hooks and circular columns, thus securing the chain.

The utility model discloses a kind of self-adapting assembly component clamp device, comprising: mounting bracket;Fixed chuck, fixed on the mounting bracket;Movable chuck, for cooperating with the fixed chuck and clamping workpiece;Outer tube, set on the mounting bracket;Slide bar, slidingly set in the outer tube, the slide bar moves under the direction of first gas pressure towards the fixed chuck;The driving block and the movable chuck between there is mutually matched slope;Cylinder, for driving the driving block moves after the slide bar is locked and cooperates, to drive the movable chuck moves towards the direction of the fixed chuck by the cooperation of the slope.The technical scheme not only improves the compatibility of fixture to diversified products, and through accurate secondary clamping, the clamping accuracy and reliability in assembly process are guaranteed, so as to improve production efficiency and product quality, effectively solve the problem proposed in background art.

The tensioning roller structure comprises a bottom supporting plate, a U-shaped movable bracket and a tensioning roller main body, wherein the bottom supporting plate is arranged on the inner side of a machine body of the textile machine and is positioned between two guide rollers; the U-shaped movable bracket is movably arranged above the bottom supporting plate; the tensioning roller main body is rotationally arranged on the inner side of the U-shaped movable bracket; the elastic movable structure is arranged between the U-shaped movable bracket and the bottom supporting plate; according to the tensioning roller structure of the textile machine, through the elastic movable design, the tension buffering capacity of the textile machine when the textile machine faces abnormal cloth or yarn is remarkably improved, cloth or yarn breakage caused by too large tension is effectively prevented, the continuity and stability of textile production are guaranteed, and when the cloth or yarn in the textile machine is abnormal, the cloth or yarn in the textile machine is not damaged. When the tension is increased suddenly due to the fact that the tension is too large, the tensioning roller can move downwards to a certain degree, abnormal damage such as cloth or yarn breakage caused by too large tension is effectively prevented, and meanwhile the height-adjustable design enables the tensioning roller to meet the tensioning requirements of different kinds of cloth or yarn.

This invention discloses an extruder head flow channel orifice structure and its application in tire tread winding, belonging to the field of tire manufacturing technology. The extruder head flow channel orifice structure includes an extruder body with a flow channel orifice connected to its end. Its core improvement lies in the non-circular shape of the extrusion orifice. This breaks through the limitations of traditional circular orifices; the non-circular design, such as rectangular or near-circular shapes, allows for adjustment of the rubber strip cross-sectional shape according to the functional requirements of different parts of the tread (such as the crown and shoulder), optimizing the contact area and bonding pressure distribution between the rubber strip and the forming drum, reducing bonding air bubbles, and improving interlayer bonding strength. The tire tread winding method involves extruding a continuous rubber strip using the extruder head flow channel orifice structure and then winding this strip onto the forming drum in a seamless manner to form the tread.

The utility model provides a kind of submerged entry nozzle electric heating baking device, including hearth shell, the wall of hearth shell includes nanometer microporous heat insulation plate layer, light clay brick layer and high-alumina refractory brick layer in turn from outside to inside, hearth shell is equipped with one or more heat-resistant partition, for the inner cavity of hearth shell is divided into multiple baking chambers, each baking chamber is used to install submerged entry nozzle, each baking chamber is evenly arranged with multiple silicon carbide heating rods around the periphery of submerged entry nozzle, the cold end of each silicon carbide heating rod is passed through hearth shell and is connected with power supply, hearth shell is equipped with insulating sealing sleeve pipe at the wall penetration position of each silicon carbide heating rod. It can meet the high-temperature preheating demand of submerged entry nozzle, and multiple submerged entry nozzles can be simultaneously and evenly electrically heated and radiantly baked, the temperature field distribution of submerged entry nozzle is uniform, local stress concentration problem is not prone to occur, and the heat insulation effect of hearth shell is good, heat loss is small, and energy utilization rate is high.

The utility model discloses a bottle body outside quick water removing device belongs to bottle body water removing device technical field, including base, telescopic mechanism, telescopic mechanism installs on base, water removing mechanism, water removing mechanism includes the mounting plate fixedly connected on the output of telescopic mechanism, the cantilever end of mounting plate is opened and is equipped with the water removing mouth through, the top of mounting plate department at water removing mouth is equipped with annular air knife, and its bottom fixedly connected with connecting frame, in the utility model, annular air knife can form annular uniform air curtain, and the water on bottle body outside is removed fast, and the accurate absorption of residual moisture on the bottom of bottle body is matched with water absorption sponge, realizes all -round dead angle water removing, and single water removing efficiency is much higher than natural air drying and traditional wiping mode, with the help of electric telescopic link, controller can switch water removing and regeneration mode flexibly, efficient water absorption when daily water removing, and then complete regeneration through extrusion after water absorption sponge saturation, and water absorption sponge does not need to change frequently.

This invention relates to the field of welding technology, and provides a through-type friction stir welding apparatus and method suitable for different plate thicknesses. The through-type friction stir welding apparatus includes a long needle stirring tool, a backing block, a limiting platform, a clamp, a positioning platform, and a worktable. The long needle stirring tool is mounted on a friction stir welding machine. The backing block is disposed on a limiting groove on the limiting platform. The positioning platform is disposed on both sides of the limiting platform, and the clamp is disposed on the positioning platform. This invention utilizes a through-type friction stir welding technology with a long needle stirring tool and a backing block, which can completely eliminate the potential risks of incomplete penetration and weak bonding at the weld root. By using a backing block made of the same material as the workpiece being welded, no material loss occurs during the through-type welding process, thus eliminating defects at the start of the through-type friction stir weld.

The utility model relates to the technical field of gear shaft machining equipment, and discloses a gear shaft positioning and drilling clamp which comprises a base and a mounting groove, positioning and clamping assemblies are oppositely arranged above the base, an adjusting assembly is arranged in the base, each positioning and clamping assembly comprises a mounting plate, and the mounting plate is provided with a positioning hole. A hollow shaft is rotationally connected to the interior of each mounting plate, a first driven gear and a second driven gear are fixedly connected to the two ends of each hollow shaft correspondingly, fixing blocks are evenly and fixedly connected to the surfaces of the mounting plates, and a first guide rod is fixedly connected between the opposite surfaces of every two fixing blocks; racks are slidably connected to the surfaces of the first guide rods correspondingly, and guide inclined grooves are evenly formed in the surfaces of the racks. According to the gear shaft machining clamp, the positioning and clamping assembly and the adjusting assembly are used in cooperation, so that the clamp can adapt to machining of gear shafts of various specifications, the production efficiency and the equipment utilization rate are greatly improved, and the production cost is reduced.

The utility model discloses a pond water purification device for aquaculture, which is characterized in that a filter element is rotatably connected in a fine filter box, the filter element comprises a cylindrical shell, a connecting shaft is arranged in the middle of the shell, a plurality of partition plates are arrayed in the shell by taking the connecting shaft as a center, the interior of the shell is divided into a plurality of fan-shaped channels by the partition plates, and filter layers are respectively arranged in the fan-shaped channels; the two ends of the connecting shaft are rotationally connected to the front end and the rear end of the refined filtration box respectively, a water inlet of the water pump is connected to the lower portion of the rear end of the refined filtration box, the lower portion of the front end of the refined filtration box is communicated with the rough filtration box through an opening, and one fan-shaped channel of the filter element is located between the water inlet and the opening. The fine filtering device has the advantages that the structure is simple, the filter element of the fine filtering box does not need to be frequently replaced, the blockage of the filter element can be prevented, the fine filtering effect is ensured, and the filter layers in the fan-shaped channels of the filter element are fully utilized.

The utility model discloses an oiling device for bearing machining, which belongs to the technical field of bearing machining and is characterized by comprising a workbench and an oil tank mounted on the surface of the workbench through a support, an electric oiling device is mounted on the surface of the support, a rotary table is arranged above the workbench, and the rotary table is connected with the oil tank. A plurality of first sliding grooves are evenly formed in the surface of the rotary table. Through the cooperation of the V-shaped groove clamping block and the first spring, the bearing oil injection device is suitable for bearings with different sizes and diameters in a reasonable range, stable clamping is achieved, the positioning rod and the abutting plate are tightly attached to the inner wall of the bearing through the elasticity of the second spring, inner ring positioning is completed, the double-clamping design ensures that the bearing is kept fixed in the oil injection process, and the oil injection efficiency is improved. And the compatibility is high, the clamp does not need to be frequently replaced, the machining efficiency is remarkably improved, pause time is provided for oil injection by arranging the intermittent rotating structure grooved wheel and the Maltese cross, and an operator can conveniently check or adjust the oil injection amount.

The utility model relates to an absorption device and system for activity test, and the absorption device for activity test includes: absorption device body for being connected with activity test device, absorption device body includes at least two groups of absorption unit, and the adjacent two groups of absorption units are provided with the baffle, one end of baffle is connected with the top of absorption unit, and the other end has the clearance with the bottom of absorption unit, and the adjacent two groups of absorption units are communicated through the clearance, and the gas control part is provided on every absorption unit, and the gas control part is used for controlling the gas inlet and outlet of sulfur dioxide, the utility model discloses can effectively utilize the dilute sulfuric acid produced by drying and the fuming sulfuric acid produced by absorption, realizes the sustained use of sulfuric acid, reduces the dangerous waste production, sulfuric acid is strong acid material, and there is danger, and the absorption device for activity test provided by the utility model embodiment need not frequently replace sulfuric acid, reduces the personnel operation, reduces the potential safety hazard.

The application relates to the technical field of high-molecular fiber sensing, in particular to a high-toughness TPU / ANF / inorganic nanoparticle composite nanometer friction positive electrode material and a preparation method thereof. The preparation method takes TPU as a base main material, does not depend on a chemical cross-linking method, and realizes flexible adaptation of a complex deformation scene by virtue of excellent stretchable deformation performance and flexible characteristics of the TPU. Meanwhile, aramid nanofiber (ANF) is introduced as a reinforcing phase, the high-strength and high-modulus characteristics of the aramid nanofiber are utilized to improve the stress and strain capacity and mechanical stability of the base, the aramid nanofiber can lock the molecular structure in the TPU, and the aramid nanofiber can inhibit significant shrinkage of the material when the temperature is increased, so that the aramid nanofiber has the dual functions of mechanical enhancement and size stability, and the reliability of a generator is ensured.

This invention provides a low-latency infusion sensing alarm module, system, and application control. Through innovative composite sensing technology, TDMA low-latency communication architecture, and end-edge-backend three-level linkage mechanism, it completely solves the pain points of existing technologies, realizes fully automatic unattended monitoring and accurate alarm of clinical infusion, ensures medical safety, and reduces the burden on nurses, patients, and caregivers throughout the entire process.

The utility model discloses an adjustable slide rail impact performance test device, which comprises a bracket, and a group of parallel guide shafts and a measuring scale are arranged on the bracket along the height direction of the bracket; a sliding block stretches across the guide shaft and moves along the arrangement direction of the guide shaft; the front face of the sliding block is connected with the telescopic sliding rail through a bolt, and the back face of the sliding block is connected with the support through a plunger piece. The mounting height of the plunger part is adjustable; in the initial state, the tail end of the plunger part penetrates through the support and extends into the sliding block so as to limit the testing height of the sliding block. The slide rail is in an extending state; in a termination state, the tail end of the plunger part penetrates through the bracket and is separated from the slide block, and the slide block falls off from the test height under the action of self weight; and the slide rail is in a contracted state. The beneficial effects of the utility model are that the slide rail is driven by the slide block to move to any height on the steel ruler, the performance parameters of the slide rail after being impacted at a determined height are simulated, and the test precision and reliability are improved.

The utility model provides a kind of lens edge automatic chamfer polishing device, it is related to chamfering equipment technical field, comprising: polishing table;The middle part upper end of polishing table is rotated and installed carousel by pivot;The polishing table on the left and right sides of carousel is respectively fixedly installed clamping frame, clamping mechanism is equipped on clamping frame, clamping mechanism is used to clamp the lens placed on carousel;Two The clamping frame between another side of polishing table is fixedly equipped with support frame at the position close to edge;Chamfer frame is installed on support frame, chamfer mechanism is equipped on chamfer frame, and chamfer mechanism is used to chamfer the lens ring edge. First, clamping mechanism uses clamping cylinder to drive clamping seat horizontal movement, drives clamping roller and driving roller to be jointly used to lens edge and be clamped.

The utility model relates to the field of plastic part resistance top clamping, disclose a kind of resistance top clamping mechanism for plastic part processing, including support base, support base top is provided with support mechanism and adjusting mechanism, the support mechanism includes fixed base, and the fixed base is fixedly connected at support base top, the fixed base inner wall is rotatably connected with the rotation bar one, the rotation bar one outer wall is fixedly connected with resistance top handle, the rotation bar one outer wall is rotatably connected with connecting plate, and the connecting plate bottom is fixedly connected with support plate. In the utility model, by setting support mechanism, the clamping support to the side wall of plastic part is realized, the stability of plastic part in processing process is guaranteed, the problems such as plastic part deformation caused by uneven force in local are avoided, the processing quality is improved, the position of clamping plate can be flexibly adjusted according to the different length of plastic part, different length plastic part can be stably clamped, and the versatility and applicability of mechanism are enhanced.

This invention relates to the field of film testing technology, and particularly to a PE release film strength testing device, comprising a tensile testing machine including a frame and a clamping module; the PE release film strength testing device also includes a pushing unit, which is mounted on the frame and includes a connecting frame connected to the frame. The connecting frame is equipped with a limiting part and a pushing part, and the limiting part is connected to multiple extending parts, each of which is connected to an extending head. The clamping module, pushing unit, and pressing unit of this invention work together in a coordinated manner, eliminating the need for multiple dedicated testing devices to complete puncture tests, tensile tests, and friction tests on PE release films. This integrated design significantly saves equipment space and cost.

The utility model discloses a filtering device for sintered colored sand production, which comprises a bottom plate, a screen frame is arranged above the bottom plate, a first screen mesh, a second screen mesh and a third screen mesh are sequentially and fixedly mounted in the screen frame, screen holes of the first screen mesh, the second screen mesh and the third screen mesh are different, three funnels are fixedly mounted on the bottom side of the screen frame, and the bottom side of the screen frame is provided with a filter screen. Three funnels are located below the first screen mesh, the second screen mesh and the third screen mesh correspondingly, the first screen mesh, the second screen mesh and the third screen mesh are arranged, the screen meshes of the screen meshes are different, three kinds of sintered colored sand different in size can be classified in one-time operation, a motor drives a beating plate to beat a screen frame, the screen frame is made to fully shake in cooperation with a first spring and a second spring, and therefore the sintered colored sand can be screened out through the first screen mesh, the second screen mesh and the third screen mesh. Compared with a traditional single-screen device, the multi-screen device has the advantages that the screens do not need to be replaced frequently, the production efficiency is greatly improved, continuous and efficient work can be achieved, the production progress is greatly promoted, the time and labor cost is reduced, and the requirements of the market for sintered color sand of various particle sizes are met.

This utility model discloses a device for fixing and elevating adhesive tape, comprising: a base plate, two sets of upright plates symmetrically fixed to the top surface of the base plate, a lifting groove extending through the upright plates, a padding rod passing transversely between the lifting grooves, a translation groove on the top surface of the base plate, a translation block slidably connected inside the translation groove, a spring telescopic frame fixed to the top surface of the translation block, a U-shaped clamping ring fixed to the top of the spring telescopic frame, and an arched top cover fixed to the top between the two sets of upright plates. Air curtain machines are symmetrically embedded at both ends of the arched top cover. This utility model innovatively integrates dual protection: a front-mounted cleaning roller removes impurities from the smooth surface of the tape, and an anti-static material prevents friction damage; the two sets of directional air curtain machines at the top, combined with the anti-static coating of the arched top cover, form a leak-free downward airflow barrier, directly preventing dust from contacting the upward-facing adhesive surface.

The utility model discloses an intelligent efficient accurate positioning constructional engineering pipeline laying device, and particularly relates to the technical field of constructional engineering, the constructional engineering pipeline laying device comprises a frame, the middle of the upper end of the frame is fixedly connected with a lifting assembly, the inner surface of the frame is slidably connected with a lifting plate, and the right side of the upper end of the lifting plate is fixedly connected with a transverse moving mechanism; the left side of the upper end of the lifting plate is fixedly connected with a driving assembly, and the lower end of the lifting plate is slidably connected with two clamping assemblies. According to the intelligent, efficient and accurate positioning constructional engineering pipeline laying device, a pipeline can be accurately moved to a designated laying position through the arranged lifting assembly, a large amount of physical labor is not needed, the burden of operators is relieved, the working comfort and safety are improved, and the working efficiency is improved. And compared with a traditional manual carrying and simple tool adjusting mode, the time for adjusting the position of the pipeline is greatly shortened.

This utility model provides an aluminum material traction and conveying device, relating to the field of aluminum material processing technology. The device includes a base with a traction mechanism installed near the top of the front side. Several auxiliary components are equidistantly installed from left to right near the top of the front side of the base. The traction mechanism includes a slide table. Tracks are symmetrically slidably connected to the back of the slide table near the top and bottom. The tracks are fixedly installed on the front of the base. An adjustment component is installed on the front of the slide table, and a clamping component is installed on the front of the adjustment component. Through the coordinated use of a second slide block, a second motor, positive and negative lead screws, a second slider, clamping blocks, and grooves, cylindrical aluminum materials of different diameters can be clamped and tractioned. Compared with traditional traction and conveying devices, there is no need for frequent replacement of clamping blocks, greatly improving processing efficiency and effectively enhancing practicality.

The utility model discloses an automobile bumper spraying support, relates to the technical field of automobile bumper spraying, and solves the problems that in the prior art, an automobile bumper spraying support is narrow in application range and poor in operation and use convenience. Comprising a frame body and mounting columns fixedly mounted at four corners of the frame body; the clamping and fixing assembly comprises a pair of bases, double-end lead screws, sliding seats and clamping blocks; the bases are arranged on the two sides of the frame body and connected to the two mounting columns on the same side respectively; the double-end lead screws are rotationally arranged in the bases respectively; the two sides of the double-end lead screws are sleeved with the sliding seats in a threaded mode; by means of the design, the device can be matched with clamping and fixing of bumpers of different specifications, and operation convenience is greatly improved. In addition, the clamping and fixing assembly can be easily installed and detached, the support body can be flexibly converted into other purposes, and therefore the practicability and multifunctionality of the whole support are enhanced.