29results about How to "Reduce local deformation" patented technology

The invention provides a control method for the rolling force of a temper mill and related equipment, and relates to the technical field of metallurgical production, the method comprises the steps that pattern information of strip steel is obtained, and the pattern information comprises width information and thickness information; determining the height of an inlet and the height of an outlet of the anti-wrinkling roller based on the model information; determining the diameter of a working roll based on the model information; determining inlet tension and outlet tension according to the diameter of the working roll; and controlling the rolling process of the temper mill based on the height of the inlet of the anti-wrinkling roller, the height of the outlet of the anti-wrinkling roller, the inlet tension and the outlet tension.

The present invention discloses a ship anchor chain shearing device, comprising a supporting mechanism, a tie rod mechanism and a shearing mechanism, wherein the supporting mechanism comprises a base supported on the ground, a bracket installed on the inner side of the base, an outer cover installed on the base, a positioning member connected to the outer cover, and a limit clamp installed on both ends of the positioning member. By opening a circular hole adapted to a nut inside a cutting disc, and clamping and installing two pads on both sides of the cutting disc that can limit and constrain the grinding disc, and fixing and installing a clamping disc in a positioning state on the outermost sides of the two pads and the grinding disc, when the cutting disc rotates at high speed and shears the anchor chain raw material, the anchor chain raw material located in the inner groove of the sub-clamp and the main clamp can be rotated and sheared under the driving force driven by the rotation of the outer side of the grinding disc, thereby effectively reducing the problem of burrs on the rear end face of the sheared anchor chain raw material.

The utility model discloses an adjustable anti-deformation plastic part welding tool, which relates to the technical field of plastic part welding and comprises a workbench, two hot air boxes are arranged at the upper end of the workbench, the output ends of the hot air boxes are fixedly connected with an air inducing pipe, and the other end of the air inducing pipe is fixedly connected with a hot air gun. Sliding grooves are formed in the left side and the right side of the upper end of the workbench, electric push rods are fixedly installed in the sliding grooves, the output ends of the electric push rods are fixedly connected with movable supports capable of sliding along the sliding grooves, lead screws are rotationally connected to the inner sides of the movable supports, and the outer surfaces of the lead screws are in threaded connection with movable bases attached to the inner walls of the movable supports. According to the device, hot air welding is adopted, the heating process is relatively uniform, the thermal stress around a welding joint is relatively small, and deformation, caused by the thermal stress, of a plastic part can be reduced.

The invention belongs to the technical field of torque overload protection, and particularly relates to a torque limiter and an assembling method. The torque limiter comprises a pressing flange and a connecting flange which are coaxially connected, a plurality of axially-arranged connecting assemblies are evenly arranged between the pressing flange and the connecting flange in the circumferential direction, each connecting assembly comprises a bolt and a connecting pin, one end of each bolt abuts against the pressing flange or the connecting flange in the axial direction, and the other end of each bolt abuts against the connecting flange. One end of the connecting pin is axially connected with the connecting flange or the pressing flange in an abutting mode, and the other end of the connecting pin is connected with the bolt.

The invention relates to the technical field of methane preparation devices, and discloses a methane aromatization catalyst preparation device and a preparation method thereof.The methane aromatization catalyst preparation device comprises a main body, the top of the main body is in bolted connection with a top cover, the bottom of the main body is fixedly connected with a discharging pipe, the outer surface of the top cover is fixedly connected with a feeding pipe, and the side, away from the main body, of the top cover is fixedly connected with a motor; and the output end of the motor penetrates through the top inner wall of the top cover and extends into the main body, and the top inner wall of the top cover is fixedly connected with a fixed cylinder. According to the device, different raw materials can be gradually dispersed through rubbing of the flexible plate, agglomeration possibly existing between the materials is broken, the materials are subjected to acting force in different directions, and therefore the material mixing sufficiency is greatly improved; the condition that the concentration of the raw materials is too high or too low locally in the main body can be prevented while sufficient distribution and mixing are achieved, so that the raw materials are more sufficiently mixed, and the uniformity and the reaction efficiency of catalyst preparation are improved.

The utility model relates to a clamping type paper tray. It includes the support plate and a plurality of bearing legs, the support plate is constituted by the board core and the board core surface paper, the bottom surface of support plate is equipped with the positioning clamping slot, the leg core is the cuboid structure, the upper surface is pasted with the support plate bottom surface, still be connected with the rib plate between arbitrary two adjacent bearing legs, the rib plate is constituted by the rib plate core and the rib plate surface paper, the upside of rib plate core both ends still is provided with the positioning block, the positioning block is inserted with the positioning clamping slot and is fixed, the upper surface of leg core still is provided with the insertion slot with the end of rib plate and forms the insertion cooperation, the rib plate with the support plate bottom surface also is pasted with setting. The utility model connects the rib plate between the adjacent bearing legs, strengthens the compression strength of support plate through the rib plate, reduces the probability of local deformation of support plate, simplifies the assembly difficulty of component, improves the firmness after assembly.

The invention discloses a fabricated subway station underground anti-seismic structure, which relates to the technical field of subway station underground anti-seismic, comprises a first frame and a second frame, and is characterized in that one side of the first frame is fixedly connected with a first bottom plate, and the bottom of the second frame is fixedly connected with a second bottom plate; a lower supporting plate is fixedly connected to the upper surface of the first bottom plate, an upper connecting block is fixedly connected to the position, close to the top, of the outer wall of one side of the lower supporting plate, two side connecting blocks are fixedly connected to one side of the lower supporting plate, and a plurality of friction protrusions are arranged on the outer wall of the first frame and the outer wall of the second frame. The top of the lower supporting plate is provided with a pressure bearing mechanism, the pressure bearing mechanism is used for dispersing top pressure, and the edges of the two sides of the top of the lower supporting plate are provided with connecting mechanisms. According to the fabricated underground anti-seismic structure of the subway station, the sliding buffering mechanism is designed, so that rails cannot be broken, the internal space is kept smooth, and the connecting mechanism is designed to ensure that a tunnel is always communicated.

This utility model discloses a prefabricated, non-removable floor slab, comprising a floor slab body, several steel bars integrally cast and fixed on the right outer wall of the floor slab body, and a column cavity provided on the left outer wall of the floor slab body. The column cavity and steel bars are used to allow the end-to-end connection of two adjacent floor slab bodies. This utility model, through the interlocking structure of column cavities, steel bars, ribs, and C-shaped inward grooves, and the column cavities and integrally cast steel bars on the left and right outer walls of the floor slab body, allows the end-to-end connection of two adjacent floor slab bodies to form a large-span rigid support and connection within the adjacent floor slab bodies.

The application belongs to the technical field of connectors, and particularly relates to a wire-to-board connector. The wire-to-board connector comprises a shell, a terminal assembly and a terminal locking assembly. The terminal assembly comprises a first terminal arranged in an upper accommodating cavity and a second terminal arranged in a lower accommodating cavity. The terminal locking assembly comprises a first terminal locking piece and a second terminal locking piece. The first terminal locking piece is used for limiting the movement of the first terminal in the front-rear direction. The second terminal locking piece is used for limiting the movement of the second terminal in the front-rear direction. The first terminal locking piece and / or the second terminal locking piece has first outer side faces and second outer side faces alternately arranged in the length direction on the side opposite to the shell. The first outer side faces and the second outer side faces are at different height positions. The application effectively improves the deformation problem after injection molding by alternately arranging the first outer side faces and the second outer side faces at different height positions on the first terminal locking piece and / or the second terminal locking piece, and reduces the assembly difficulty.

The invention belongs to the technical field of connectors, and particularly relates to a wire-to-board connector which comprises a shell, a terminal assembly and a terminal locking assembly. The terminal assembly comprises a first terminal arranged in the upper containing cavity and a second terminal arranged in the lower containing cavity, the terminal locking assembly comprises a first terminal locking piece and a second terminal locking piece, the first terminal locking piece is used for limiting the first terminal to move in the front-back direction, and the second terminal locking piece is used for limiting the second terminal to move in the front-back direction. One side of the first terminal locking piece and / or the second terminal locking piece back to the shell is provided with a first outer side surface and a second outer side surface which are alternately arranged along the length direction, and the first outer side surface and the second outer side surface are positioned at different height positions. According to the invention, the first outer side surfaces and the second outer side surfaces at different height positions are alternately arranged on the first terminal locking member and / or the second terminal locking member, so that the problem of deformation after injection molding is effectively improved, and the assembly difficulty is reduced.

The present invention provides a side guard plate mounting device for a hydraulic support, comprising a mounting frame and a rocker arm hinged on the mounting frame, one end of the rocker arm is connected to a first power output component for controlling the rotation of the rocker arm, and the other end is provided with a clamping portion for clamping the side guard plate, the clamping portion is hingedly connected to the rocker arm, and the clamping portion comprises a clamping plate for achieving surface-to-surface contact with the side guard plate. The beneficial effect of the present invention is that since the clamping portion comprises a clamping plate for achieving surface-to-surface contact with the side guard plate, compared with the point-to-surface contact form in the prior art, the contact area is large, thereby minimizing the local deformation and damage of the side guard plate to the greatest extent, and ensuring the use effect of the side guard plate. At the same time, since the clamping portion is hingedly connected to the rocker arm, the clamping portion can also rotate during the rotation of the rocker arm, thereby enabling the clamping plate to adaptively adjust the contact mode with the side guard plate to achieve surface-to-surface contact and ensure the clamping effect.

The invention provides a heat sealing and separating device for pearl wool processing, and belongs to the field of pearl wool processing. The heat sealing and separating device comprises a case, and a separating cavity is formed in the case; the separation assembly comprises a separation frame, the separation frame is connected with the top of the separation cavity through a lifting structure, a main rod is arranged between the left side and the right side in the separation frame, sliding frames are slidably connected to the left side and the right side of the bottom of the separation cavity correspondingly, and the sliding frames are arranged on the outer side of the main rod; the upper sides of the inner walls of the left side and the right side of the separation frame are fixedly connected with first racks correspondingly. According to the separation device, through the arranged structures such as the separation assembly, the separation knife can do one-way linear motion and reciprocating linear motion at the same time in the separation and cutting process of the pearl wool, the local deformation amount and stress of the pearl wool in the separation process are reduced, and the separation precision of the separation device in the cutting and separation process of the pearl wool is improved.

The application discloses a compressor shell hot-joint machine and relates to the technical field of compressor manufacturing. The compressor shell hot-joint machine comprises a rack, a work station group and a grabbing group arranged on the rack, the grabbing group is arranged above the work station group, the work station group comprises, in sequence along a material conveying direction, a feeding station, an alignment station, a first heating station, a second heating station and a pressing station, the feeding station is connected with a shell conveying line, the pressing station is connected with a stator conveying line, the grabbing group comprises, in sequence along the material conveying direction, a feeding mechanical arm, a first transplanting mechanical arm, a second transplanting mechanical arm and a pressing special machine arm. The application can guarantee that the shell is uniformly heated, avoid local deformation of the shell, make the inner diameter of the shell fully expand, be favorable for smooth assembly of the shell and the stator, and avoid occurrence of situations such as collision of the shell and the stator, severe deformation of the shell, damage of the stator and the like.

The utility model discloses a rear subframe mounting structure and a vehicle, and relates to the technical field of vehicles, the rear subframe mounting structure comprises a rear longitudinal beam, a reinforcing connecting plate and a mounting sleeve, the reinforcing connecting plate is fixed in the rear longitudinal beam and divides an inner cavity of the rear longitudinal beam into a first cavity and a second cavity which are arranged in the vertical direction; the mounting sleeve is used for mounting a rear auxiliary frame of the vehicle, and the mounting sleeve penetrates through and is connected to the rear longitudinal beam and the reinforcing connecting plate; according to the technical scheme, the connection rigidity of the installation position of the rear auxiliary frame can be improved, and the driving safety is improved.

The utility model discloses a pot mouth sealing structure and a pot cover, the pot mouth sealing structure is detachably connected to the pot cover, and the pot mouth sealing structure comprises a cover plate which is detachably connected to the pot cover; the sealing ring is arranged on the outer edge of the cover plate in a sleeving manner; the fixed knob can penetrate through the cover plate to be connected to the pot cover, and the fixed knob can rotate relative to the cover plate. The pot cover is provided with a pressure bearing plate, and a fixing column matched with the fixing rotary knob is arranged on the pressure bearing plate. Through the detachable structure (the cover plate, the sealing ring and the fixed knob), parts are convenient to clean or replace, and the user experience is improved; the rotation function of the fixed knob allows adjustment of sealing pressure to adapt to different pot opening states (such as thermal expansion and cold contraction), and excessive compression or failure of the sealing ring is avoided.

This invention discloses an optical imaging lens, comprising an outer cover, a lens barrel, and a plurality of lenses disposed within the lens barrel. The front end of the lens barrel includes an object-side opening, and the rear end includes an image-side opening. The inner diameter of the object-side opening is smaller than the inner diameter of the image-side opening. The outer cover is conical and disposed on the outer surface of the front end of the lens barrel. The outer cover includes an object-side opening and an image-side opening, the maximum outer diameter of which is smaller than the maximum outer diameter of the image-side opening. The length of the outer cover along the optical axis is greater than 40% of the length of the lens barrel along the optical axis.

The utility model relates to a novel narrow edge distance punching structure which comprises an upper die base, a punching assembly installed at the bottom end of the upper die base, a lower die base and a punching female die installed at the top end of the lower die base, the punching assembly comprises a stop plate, a stripper plate, a punch, a swing block base, swing blocks, a reset ejector rod and a reset spring, and the punching female die is correspondingly arranged below the two swing blocks. According to the novel narrow-edge-distance punching structure, the swing block base, the swing block, the reset ejector rod and the punch which are specially designed are matched with the punching female die, the two sides of a product can be limited and clamped during punching, local deformation of the product caused by punching is effectively reduced, and therefore the product structure of the extremely-small hole edge distance type can be completed through the punching technology, and the punching efficiency is improved. According to the invention, an extra complex process (such as laser cutting, etching and the like) is replaced, the manufacturing cost of a product is greatly reduced, and the structure can be independently applied to a single engineering mold and also can be applied to a continuous mold as a module.

The utility model relates to bionic butterfly device technical field especially, more particularly to a kind of bionic butterfly mechanical structure, including torso power structure and the left wing structure and right wing structure being set in its both sides, torso power structure and left wing structure, right wing structure form bionic butterfly, the utility model is formed by the setting position between two groups of swing arm angle, can reduce air resistance in flight process, wing forms the inclination angle swing process can more efficiently cut air, when swinging downward, inclination angle can increase the acting area of wing and air, similar to more strong lift generated by rowing, when swinging upward, adjusting inclination angle can reduce air resistance, compared with up and down horizontal swing more close to natural butterfly flight mode, overall improve bionic butterfly energy utilization rate, and adopt modularization installation, avoid the whole bionic body scrapping due to local problem, improve the overall service life of equipment, structure is small and exquisite, to reach bionic butterfly efficient flight purpose.

This utility model discloses a bending-resistant sound barrier column, including a base, a bending-resistant structure installed at the top of the base, and a protective structure installed at the top of the bending-resistant structure. The bending-resistant structure includes a pre-embedded steel plate set at the top of the base, with screw holes on the surface of the pre-embedded steel plate. Screws are installed inside the screw holes, with a main nut installed at the top of the screw and a secondary nut installed at the top of the main nut. A straight side plate is installed at the top of the pre-embedded steel plate, and a column is installed on one side of the straight side plate. Longitudinal reinforcing plates are installed on both sides inside the column. This utility model allows for precise adjustment of the preload by tightening the main nut and secondary nut using a torque method. The contact surfaces of the main nut and secondary nut generate additional frictional resistance, effectively resisting loosening between the internal and external threads. The straight side plate and the arc-shaped side plate are welded to both sides of the column to form a streamlined surface, reducing wind resistance or fluid resistance.

The invention discloses a lithium ion battery positive electrode with high thermal stability. The lithium ion battery positive electrode comprises a composite current collector and a positive electrode active material coating, wherein at least one surface of the composite current collector is coated with the positive electrode active material coating; the composite current collector comprises a first aluminum foil layer, a second aluminum foil layer and a heat-resistant buffer material layer arranged between the first aluminum foil layer and the second aluminum foil layer; the heat-resistant buffer material layer is made of ceramic silica gel foam, a plurality of trapezoidal protrusions are arranged on the surfaces of the two sides of the heat-resistant buffer material layer, the first aluminum foil layer and the second aluminum foil layer are each provided with a plurality of trapezoidal grooves embedded with the trapezoidal protrusions, the width of the cross section of each trapezoidal protrusion is gradually increased from inside to outside, and the width of the cross section of each trapezoidal groove is gradually increased from inside to outside. The width of the cross section of the trapezoid groove is gradually reduced from inside to outside, and an interlocking structure is formed between the first aluminum foil layer and the second aluminum foil layer through matching of the trapezoid protrusion and the trapezoid groove. The lithium ion battery positive electrode provided by the invention has excellent thermal stability, high interface bonding strength and high mechanical reliability.

The present invention relates to the technical field of sheet metal bending equipment, and discloses a metal sheet punching and folding composite forming machine, including a main body, a conveying body fixedly connected to the front of the main body, a hydraulic rod fixedly connected to the top of the main body, an output end of the hydraulic rod penetrates the top inner wall of the main body and extends to the inside, an extended end of the hydraulic rod is fixedly connected to a bending plate, and a fixed frame is fixedly connected to the inside of the main body. When the special-shaped shaft of the present invention rotates, it will drive the sliding plate through the inclined shaft, so that the sliding plate will slide back and forth on the surface of the C-shaped shaft. When the sliding plate slides, it will knock on the C-shaped shaft. At this time, when the C-shaped shaft is attached to the surface of the corner of the plate, it can provide certain support and protection for the plate, help disperse the stress at the bend, and at the same time, the reciprocating sliding plate can also disperse the stress at the bend when knocking the C-shaped shaft, prevent deformation due to excessive concentration of stress at the bend, and reduce the risk of damage to the plate.

The invention discloses a die structure of a low-vortex shaft forge piece and a forging demolding technology, and relates to the field of aviation shaft forge piece thermal deformation forming, the die structure of the low-vortex shaft forge piece comprises an upper die base, a lower die base, a flat pressing upper die, a forging upper die and a lower die, and the flat pressing upper die and the forging upper die are installed on the upper die base; the lower die is installed on the lower die base and used for being matched with the flat pressing upper die or the forging upper die to conduct the forging procedure, the lower die comprises a lower die outer ring and a lower die inner ring, the lower die outer ring is connected with the lower die base, the lower die inner ring is located on the inner side of the lower die outer ring and comprises a sizing part and a forging part, and the length of the forging part is larger than that of the sizing part. The sizing part and the forging part are coaxially arranged, the sizing part comprises two first semi-rings, and the forging part comprises two second semi-rings. The sizing part and the forging part of the inner ring of the lower die are separated from the forge piece in a radial parting mode, the forge piece does not need to be drawn, and local deformation and surface abrasion of the forge piece are reduced as much as possible.

The utility model belongs to the technical field of bearing seat machining, and particularly relates to a bearing seat machining clamping tool which comprises a workbench. A containing groove is formed in the middle of the workbench, multiple sets of first grooves are formed in the side wall of the workbench, the first grooves are formed in the center of the side wall of the workbench, sliding rods are arranged in the first grooves, the sliding rods penetrate through the middle of the workbench, and the sliding rods are in sliding connection with the middle of the workbench. A spring is fixedly connected between the end of the sliding rod and the workbench, an elastic plate is fixedly connected to the end, away from the spring, of the sliding rod, the elastic plate is in an arc shape, a bearing pedestal can be effectively clamped and fixed through the multiple sets of elastic plates during machining, and the device can adapt to bearing pedestals of different sizes and shapes. The bearing seat is fixed through the elastic plate, so that impact of equipment on the bearing seat can be effectively reduced, displacement or shaking of the bearing seat during machining is effectively reduced, and clamping force borne by the bearing seat is more uniform.

This application discloses an explosion-proof and noise-reducing valve shell structure for nuclear power plants, belonging to the field of valve technology. It mainly includes: a valve shell with water pipes connected to both ends, an installation pipe connected to the upper end of the valve shell, an explosion-proof assembly mounted on the valve shell, the explosion-proof assembly including two explosion-proof covers fitted onto the valve shell, each explosion-proof cover having a limiting hole at both ends, a main reinforcement assembly mounted on the explosion-proof covers, the main reinforcement assembly including reinforcing semi-rings mounted at both ends of the explosion-proof covers, the lower ends of the reinforcing semi-rings embedded in the limiting holes, and an auxiliary reinforcement assembly mounted on the installation pipe. This explosion-proof and noise-reducing valve shell structure for nuclear power plants, by using the two explosion-proof covers of the explosion-proof assembly to wrap around the outer wall of the valve shell and cover the lower part of the water pipes, can resist external impacts, reduce the occurrence of local deformation or cracking of the valve shell, and improve the explosion-proof threshold of the valve.

The utility model relates to the technical field of water conservancy facilities, and discloses a steel corrugated plate structure canal which comprises canal assemblies, a plurality of canal assemblies are sequentially connected in the length direction of the canal, each canal assembly comprises a corrugated steel plate, a longitudinal corrugated plate and an upper transverse edge, and the longitudinal corrugated plate is fixedly installed on the inner bottom wall of the corrugated steel plate. The outer side of the upper transverse edge is fixedly connected with a lower folding edge used for limiting downwards, the bottom wall, the side edges, the upper transverse edge and the lower folding edge of the water channel of the steel corrugated plate structure are integrally formed by forging and pressing the corrugated steel plates in the transverse corrugation direction, and no connecting piece is arranged. The integrally forged and formed structure avoids the problem that the structure is unstable due to looseness of the connecting piece, and the integrally formed structure can better maintain the overall integrity and stability when facing water flow impact, foundation settlement, temperature change and other complex external factors.

A control valve (1000), comprising a valve body (100), a valve element assembly (300), and a sealing member (200), wherein the valve body is provided with a mounting cavity (101), and at least part of the valve element assembly is located in the mounting cavity; the valve body comprises a bottom wall (10), a side wall (20) and a limiting rib (30), the side wall is arranged to protrude from the bottom wall, the limiting rib comprises an arc-shaped section, is located in a space enclosed by the side wall and the bottom wall, and protrudes out of the bottom wall, and a gap is provided between the side wall and the limiting rib; the sealing member comprises a first part and a second part, the axial end close to the sealing member being defined as the first part, and the part located between the valve element assembly and the side wall being defined as the second part; the first part is fixedly connected to the second part, the first part is located in the gap, and the second part is located between the valve element assembly and the side wall. As such, the control valve can limit the position of the sealing member by means of the valve body, thereby helping to reduce the influence of the local deformation during an assembly process on the sealing performance of the sealing member.

The utility model relates to the technical field of printing, papermaking and packaging machinery, in particular to an automatic sectional core-pulling paper tube rolling machine which comprises a rolling mechanism and a pulling mechanism. The rolling mechanism comprises a rolling base and a rolling mechanism, the mandrel is composed of a first drawing pipe and a second drawing pipe, the first drawing pipe and the second drawing pipe are mutually inserted together to form the outer surface of the mandrel, and the mandrel is rotationally arranged on the rolling base; the rolling power piece is arranged on one side of the core shaft and used for driving the core shaft to rotate so as to roll the paper into a barrel shape; the positioning head is arranged on the other side of the core shaft and is used for positioning and correcting the core shaft; the pulling mechanism comprises a pulling base and a pulling rod, one end of the sliding block is connected with the mandrel; the drawing power piece is arranged on one side of the drawing base, and the drawing power piece drives the sliding block to slide on the drawing base through linkage with the rotating lead screw; and the core shaft is pulled from the rolling base to the pulling base.

The utility model relates to the technical field of aluminum profiles, and discloses a bending-resistant aluminum profile. Comprising an aluminum profile body, the section of the aluminum profile body is rectangular, a rectangular hole is formed in the inner wall of the middle of the aluminum profile body, auxiliary bending-resistant assemblies are symmetrically arranged in the rectangular hole in the vertical direction, and each auxiliary bending-resistant assembly comprises horizontal reinforcing rib plates symmetrically and fixedly connected to the inner side wall of the rectangular hole; the width of the two horizontal reinforcing rib plates is the same as the width of the inner diameter of the rectangular hole, vertical reinforcing rib plates are fixedly connected between the surfaces of the two horizontal reinforcing rib plates and the inner side wall of the rectangular hole, and the multiple vertical reinforcing rib plates are arranged at intervals. The wall thickness of the aluminum profile body is small, so that the overall weight of the aluminum profile body is reduced, the horizontal reinforcing rib plates and the vertical reinforcing rib plates are matched, stress is even, and balance of light weight and high rigidity is achieved.

The utility model relates to the technical field of vehicles, in particular to a forklift driving wheel assembly and a forklift. The forklift driving wheel assembly comprises an installation support and a driving wheel, the installation support comprises an installation part and a supporting part arranged on one side of the installation part in a protruding mode, a transition slope surface structure is arranged between the installation part and the supporting part, and the thickness of the transition slope surface structure is gradually increased from top to bottom; the driving wheel is rotationally arranged on the side, connected with the transition slope surface structure, of the supporting part, the transition slope surface structure comprises a first slope surface and at least one second slope surface, and the first slope surface is connected with the second slope surface; circle centers corresponding to projections of an outer edge arc line of the first slope surface, an outer edge arc line of the second slope surface and a butt joint arc line of the first slope surface and the second slope surface in a plane perpendicular to the axis of the driving wheel are respectively arranged in a staggered manner. The arrangement of the transition slope surface structure can ensure that the mounting bracket is still stable after being used for a long time; the driving wheels are of a single-side supporting structure, and the requirements for light weight and compactness of the forklift can be met.