58results about How to "Improve braking performance" patented technology

The invention relates to the technical field of disc brake discs, and particularly discloses a disc brake disc assembly capable of cooling, which comprises a main body structure and a cooling structure, the cooling structure is detachably arranged on a caliper main body of the main body structure, according to the scheme, the disc brake disc is designed to be assembled, and the assembled disc brake disc forms a hollow H shape; meanwhile, copper pipes are symmetrically arranged on the inner side walls, cooling liquid can be contained in the copper pipes, efficient heat conduction, absorption and heat dissipation are conducted, and in the running and rotating process, fan blades in the middle of the disc brake set rotate under wind power to promote and improve internal heat dissipation; in addition, wind power is generated through the cooling assembly by means of an air pump, low-temperature wind power flowing out of one end of a vortex three-way pipe is blown to the disc brake disc through the vortex three-way pipe, the cooling speed is increased, the cooling effect is improved, and driving safety is guaranteed.

The utility model discloses a brake disc casting mold which comprises a pouring cup and a mold core, the transverse pouring gates comprise the first transverse pouring gate and the second transverse pouring gate, the first transverse pouring gate is connected with the pouring cup and extends outwards in the first direction, the second transverse pouring gate is connected with the pouring cup and extends outwards in the second direction, and a first included angle space is formed between the first transverse pouring gate and the second transverse pouring gate; the cavity is provided with a first inlet and a second inlet, and the first inlet and the second inlet are symmetrically distributed on the two sides of the cavity relative to the center of the cavity; wherein the mold cavity comprises a first mold cavity, the first mold cavity is arranged in the first included angle space, the first cross gate is connected to a first inlet of the first mold cavity through the first flow gate, and the second cross gate is connected to a second inlet of the first mold cavity through the second flow gate. The brake disc casting mold is excellent and stable in mechanical property, the brake performance of a whole vehicle can be improved, meanwhile, defective products can be reduced, and the production and management cost of an enterprise is reduced.

The utility model belongs to the technical field of automobile brake equipment, concretely relates to a flange plate brake structure, including combination disc and the friction piece and brake caliper of setting on combination disc, combination disc includes first brake disc, second brake disc and circumferential connecting block, the circumferential connecting block is set as multiple blocks, and is fixed between first brake disc and second brake disc, first brake disc and second brake disc concentricity arrangement, multiple the circumferential connecting block is first brake disc or second brake disc as the center of circle and presents the circular distribution. The utility model discloses the cooperation structure of combination disc and friction piece, when brake caliper action, can make first half friction ring and second half friction ring on friction piece alternate and brake pad contact, realize the heat dispersion when continuous braking, again with the cooperation of rotating circumferential connecting block guarantee first brake disc and second brake disc heat conduction to first half friction ring and second half friction ring, reduce the heat saturation effect, keep stable brake effect.

The utility model provides a tricycle brake disc relates to brake disc technical field, including the support shell, the top fixedly connected with two support blocks of support shell, the top of support block is established with the axle hole, the bottom fixedly penetrates to the bottom of support shell of axle hole, the top of support shell is provided with the rotating lever, the top fixedly connected with the rotating plate of rotating lever, two the top of rotating plate is provided with the support plate, the inner wall rotationally connected with the axle of axle hole. The utility model, through fixedly connecting two support blocks in the top of support shell, and establishing the axle hole in the top of support block, makes rotating lever can drive rotating plate to carry out effective rotation control, the rotary connection of rotating plate and support plate makes whole brake system can realize more even brake force distribution, especially, in the design, the inner wall fixedly connected baffle of brake shell's one side, and fixedly connected through the spring, makes baffle can rebound quickly in the brake process, ensures that the contact of brake shoe and brake disc is more even.

The invention discloses a metal sulfide and application thereof, and relates to the technical field of sulfides. The metal sulfide disclosed by the invention is a zinc sulfide material, and the zinc sulfide material meets the following relational expression: span * ((I1 + I3) / I2) is more than or equal to 0.2 and less than or equal to 6.3; wherein span is the particle size distribution span value of the zinc sulfide material; i1, I2 and I3 respectively represent the peak intensities of diffraction peaks at the positions of 26.7 to 27.1 degrees, 28.4 to 28.8 degrees and 30.4 to 30.8 degrees in an XRD (X-Ray Diffraction) spectrum obtained by performing XRD measurement on the zinc sulfide material. The metal sulfide disclosed by the invention is applied to the friction material, so that the friction coefficient change rate of the friction material in extreme environments such as low temperature and high temperature is small, and the wear rate is relatively low.

The invention discloses a double-acting type motor disc brake device which comprises a driving module, a transmission module and an execution module. The driving module is composed of a motor, a bevel gear and a shell, the direction of torque output by the motor is changed through the bevel gear, and the torque is transmitted to the transmission module; the transmission module is composed of a gear, a transmission shaft and a bearing and used for increasing torque and transmitting the torque to the execution module. The execution module is composed of a threaded rod, brake pads and a bearing, threads on the left side and the right side of the threaded rod are opposite in rotating direction, torque drives the threaded rod to rotate and drives the two brake pads to move oppositely, and a brake disc is extruded to complete the braking action. The single motor is used for achieving simultaneous opposite movement of the brake pads on the two sides, and deformation caused by extrusion of the brake pads is avoided.

The utility model relates to a rear brake stroke guaranteeing tool, which is clamped on a vehicle handle, measures the swing displacement of a brake handle by taking the vehicle handle as a reference, and structurally comprises a clamping part which is connected with the vehicle handle in a clamping manner, and a measuring part which is positioned on a swing displacement path of the brake handle and measures the displacement of the brake handle. According to the utility model, the clamping part at the front end of the clamp is clamped on the handlebar of the electric vehicle, the scales on the left side and the right side are read, applicable brake requirements are set for different vehicle types, the brake is adjusted to the appointed scale position of the hand brake, and the rear brake stroke in the production and manufacturing process of the electric vehicle is consistent.

The invention relates to the technical field of electric vehicle drum brakes, and discloses a drum brake type electromagnetic and friction hybrid braking device for an electric vehicle, a friction braking unit of the drum brake type electromagnetic and friction hybrid braking device is provided with a brake drum connected to a power source to rotate, brake pads sequentially arranged in the brake drum and two brake shoes symmetrically arranged, the brake cylinder is arranged between the two brake shoes, and the round drum is arranged on the outer side of the brake drum. The control unit is provided with a voltage regulating module which is connected with and controls the brake handle and the electromagnetic brake unit to control the working state of the controller. The number of the electromagnetic braking units is four, and the electromagnetic braking units are symmetrically arranged on the round drum. The hybrid braking device is simple in structure, high in practicability and high in braking reliability, the response speed and sensitivity of the brake drum and the brake pad can be improved while stable braking is kept, and meanwhile the heat dissipation performance and wear resistance of the whole braking device can be improved.

The utility model discloses a composite type automobile brake pad structure which comprises a back plate and a brake pad body. The heat insulation plate is fixedly mounted on the back plate; the friction block is arranged on the side wall of the heat insulation plate in a sliding mode, and inclined grooves are symmetrically formed in the side wall of the friction block; the grinding block is arranged in the chute in a sliding manner; the connecting assembly at least comprises an elastic plate which is fixedly installed on the side wall of the heat insulation plate and fixedly connected to the grinding block. According to the composite type automobile brake pad structure, the contact area of the friction block and the brake disc is reduced through the inclined grooves formed in the side wall of the friction block, so that the contact area is reduced while an automobile decelerates, heat generated during friction is reduced, and deformation of a steel assembly in the friction block caused by heat accumulation is avoided; and dust adhered to the brake disc can be scraped through the formed inclined grooves, so that the braking effect is improved, heat generated by the brake pad during braking is reduced, the service life of the brake pad is prolonged, and traffic accidents caused by brake pad failure due to high temperature are effectively reduced.

The utility model relates to the technical field of bicycle disc brake discs, and discloses a lightweight aluminum type high-strength bicycle disc brake disc which comprises a disc brake disc body, the disc brake disc body comprises a central hub through hole, a bolt mounting hole, a weight reduction structure, a sand discharge groove and heat dissipation holes, the bolt mounting hole is located in the concave position of the central hub through hole, and the weight reduction structure is located in the concave position of the central hub through hole. The weight reducing structures are evenly distributed between the bolt mounting holes, and the sand discharging grooves and the heat dissipation holes are located in the outer side of the disc brake disc body. The brake disc is integrally made of aluminum materials, is lighter in weight, better in heat conductivity and capable of reducing thermal deformation and abrasion of the brake disc and keeping relatively stable brake performance, the sand discharging grooves have guidance quality, foreign matter can be rapidly discharged from the brake disc, the sand discharging grooves are deeper and deeper from the root to the edge, and the middle of the sand discharging grooves are provided with notches and red markers. When the surface of the marker is exposed due to abrasion of the disc brake disc, a user can be visually reminded that the service life of the disc brake disc is used up and the disc brake disc needs to be replaced, and riding safety is guaranteed.

The invention discloses an anti-falling stand column split type oil drilling supporting frame, and relates to the technical field of drilling derricks, the anti-falling stand column split type oil drilling supporting frame comprises a drilling derrick, a platform and a climbing ladder, the platform is fixedly connected to the drilling derrick, the climbing ladder is fixed to the side face of the drilling derrick, and the anti-falling stand column split type oil drilling supporting frame further comprises a steel cable, a safety buckle, an anti-falling safety detection assembly and a safety processing assembly; according to the drilling derrick safety protection system, through the arrangement of the safety processing assembly, the improvement of the whole protection system is promoted, and the safety of workers under various complex working conditions can be effectively guaranteed; the mode that the safety buckle on the steel rope stops falling through cooperation of machines is different from the mode that the falling condition of workers is detected depending on electronic equipment and a sensor in the prior art, and triggering is conducted through the influence of centrifugal force on the balancing weight. And the problem that the electronic equipment is easily interfered in a complex industrial environment such as a drilling derrick is avoided.

The civil aviation bulk cargo card comprises a vehicle body and a cargo bucket arranged on the vehicle body, the vehicle body is provided with driving wheels, the driving wheels are not provided with pneumatic brake modules, the pneumatic brake modules are used for braking the driving wheels, and the vehicle body is not provided with the waterproof anti-falling device and a front-back connecting device. And independent pneumatic brake control, effective waterproof and anti-falling design and front and back connecting devices are provided. The structure can effectively solve the problems of insensitive braking, insufficient cargo protection and unstable connection in the current civil aviation luggage and cargo transportation process, and has wide application prospects.

The utility model relates to the technical field of ship brake devices, and discloses a winch brake device for a ship. The ship winch stopping and fixing device comprises the operation plate, the control groove is formed in the upper end of the operation plate, the operation box is fixedly connected to the end, away from the control groove, of the operation plate, and when the ship winch needs to be stopped and fixed, a user only needs to step on a braking vane; when the braking vane is treaded, the piston and the piston rod on the sliding block are driven to move towards the butt joint groove at the same time, the piston can exert pressure on the butt joint groove, and therefore the braking work is completed, and when the top end of the clamping block makes contact with the bottom end of the clamping groove, the braking vane is driven to move towards the butt joint groove. The brake device is very convenient to operate, and the brake device is provided with a plurality of layers of brake structures, so that the brake effect is ensured to the greatest extent.

The utility model relates to the technical field of stainless steel pipe uncoilers, and discloses an auxiliary brake device of a stainless steel pipe uncoiler, which comprises an uncoiler, a rotating shaft is rotatably connected in the uncoiler, a limiting component is fixedly mounted on the surface of the rotating shaft, and the limiting component comprises a fixing ring, a brake device and a brake device. According to the auxiliary brake device for the stainless steel pipe uncoiling machine, when a worker brakes the uncoiling machine, a micromotor can be started to drive a threaded rod to rotate in the rotating direction of an output shaft of the micromotor, so that a sliding block is driven to move towards the center point of the threaded rod, and a limiting block and clamping teeth are driven to move in the moving direction of the sliding block; and therefore, the outer side of a limiting disc on the surface of a fixing shaft inserted into the surface of the rotating shaft is driven to abut against triangular teeth fixed to the outer side of the limiting disc, the braking effect is achieved, the operation difficulty of workers is reduced, and the working convenience and working efficiency are improved.

The utility model discloses a tread pattern and a cross-country muddy ground tire, which comprises a plurality of transverse grooves which are transversely arranged on a tread in a penetrating manner, and each transverse groove is of a wave-shaped structure with two opposite opening directions; the transverse pattern groups are arranged between every two adjacent transverse grooves; the middle longitudinal groove longitudinally penetrates through the middle parts of the transverse pattern groups; the middle part of the middle longitudinal groove is an equidistant part which is not changed in width and is arranged in an inclined structure, and the upper end and the lower end of the middle longitudinal groove are expanding parts which are in an expanding shape from inside to outside; the shoulder longitudinal groove longitudinally penetrates through the two sides of the transverse pattern group and is of a three-folded-section structure; and the transverse pattern groups are divided by the middle longitudinal grooves and the shoulder longitudinal grooves to form middle pattern blocks and shoulder pattern blocks which are arranged in a central symmetry structure. Compared with the prior art, the utility model has the beneficial effects of not only being capable of keeping strong braking performance in severe road conditions such as mountainous regions, deserts, muddy lands and the like, but also having good drainage and mud discharge capabilities.

The invention discloses a control method, device and equipment of an anti-lock braking system and a vehicle, and relates to the technical field of vehicles. The method comprises the steps that under the condition that it is detected that a vehicle is braked emergently, the road surface adhesion level at the current moment is determined; determining a pressure change rate factor corresponding to the pavement adhesion level at the current moment; the pressure change rate of an anti-lock actuator in the vehicle is adjusted based on the pressure change rate factor, and the target pressure change rate of the anti-lock actuator is obtained; and the pressure change rate of the anti-lock actuator is controlled to be the target pressure change rate. By adopting the method, the brake performance of the vehicle can be improved.

The present invention specifically relates to a forklift wet drive axle, including a main reducer assembly, a bridge assembly, a half-axle, a wheel-side reducer, a wheel hub, and a wet brake assembly. The bridge assembly is covered and arranged on the outer circumference of the half-axle, the main reducer assembly is arranged in the middle of the half-axle, two wheel-side reducers are arranged and arranged at both ends of the half-axle respectively, two wheel hubs are arranged and arranged on the inner sides of the two wheel-side reducers respectively, and two wet brake assemblies are arranged, which are respectively connected and fixed to the wheel hub by bolts; the wet brake assembly includes a brake piston, a clutch plate, a disc friction plate, and a brake flange, and the brake piston, clutch plate, disc friction plate, and brake flange are arranged in sequence, and the brake flange is fixed to the wheel hub by bolts. The forklift wet drive axle of the present invention has a compact structure, a large braking torque, high braking stability, good sealing, strong anti-pollution ability, good cooling effect, is not limited to the use environment, and has a long maintenance cycle.

The utility model discloses a brake disc for a light-weight aluminum alloy bicycle. The brake disc comprises a disc main body, a mounting hole is formed in the center of the disc body, a plurality of fixing holes are formed in the edge of the mounting hole, a circle of special-shaped holes facilitating light weight are formed in the periphery of the mounting hole, a brake part is arranged on the edge of the disc body, heat dissipation grooves and heat dissipation hole sets are arranged on the two side faces of the brake part in a circular array mode, and the heat dissipation hole sets surround the two sides of the heat dissipation grooves. The heat dissipation groove is provided with an open groove and a strip-shaped groove, the open groove is located in the edge of the disc body, the strip-shaped groove is communicated with the open groove, and the open groove extends towards the middle of the disc body. The brake part is provided with the heat dissipation grooves and the heat dissipation hole sets which are arranged in the circular array, the heat dissipation grooves are transversely formed in the surfaces of the two sides of the brake part, when the disc body rotates, air conveniently flows through the grooves to take away heat, and the heat dissipation grooves can also improve the friction force between the disc body and a brake pad in a band brake. And the heat dissipation hole group can further accelerate the heat dissipation efficiency so as to improve the brake performance.

The utility model discloses a porous heat dissipation type automobile brake pad, which belongs to the field of automobile brake pads and comprises a friction material layer, a plurality of inclined holes are arranged on the front surface of the friction material layer, a plurality of vertical through holes are arranged at the top and the bottom of the friction material layer, the vertical through holes are communicated with the inclined holes, and a plurality of transverse through holes are transversely arranged on the friction material layer. A plurality of inclined holes are formed in the front face of the friction material layer, a plurality of transverse through holes are formed in the front face of the friction material layer and communicated with the inclined holes, a plurality of through grooves are formed in the rear portion of the friction material layer, a transition layer is fixedly installed on the rear side of the friction material layer, a back plate is fixedly installed on the rear side of the transition layer, the through grooves are located on the rear portions of the inclined holes, and honeycomb holes are formed in the circumferential portion of the transition layer. The inclined holes are communicated with the multiple vertical through holes and the multiple transverse through holes, the heat dissipation effect of the friction material layer can be improved, the honeycomb holes of the transition layer are matched, good heat dissipation is achieved, good braking performance is kept, the through grooves are communicated with the inclined holes, powder generated by friction can fall off, and braking is prevented from being affected.

The utility model discloses a conical braking device, and relates to the technical field of braking. Comprising a motor body, the middle of the motor body is provided with an axial rod, the lower portion of the axial rod is sleeved with a spring, the lower portion of the axial rod is provided with a pointing pin, the motor body is provided with a conical brake disc through the pointing pin, the conical brake disc is arranged on the outer side of the spring, and the bottom end of the axial rod is provided with a mounting tailstock which is provided with a conical friction plate. The spring stretches out and draws back in the vertical direction and is used for driving the conical brake disc to move in the vertical direction, and the pointing pin plays a role in guiding the spring. Through the integral arrangement of the device, the strong braking effect on the motor body is realized in a narrow space, so that the transmission accuracy of the motor body is ensured, the installation condition of small occupied space is realized, the device has the advantages of strong braking effect, compact structure, easiness in manufacturing and low cost, and the applicability is improved.

The present invention discloses a trackless rubber-tyred vehicle brake protection device, which relates to the technical field of trackless rubber-tyred vehicles, and comprises: a brake mechanism, wherein the brake mechanism comprises a brake drum, a brake disc is installed on the side of the brake drum, two brake shoes are symmetrically installed inside the brake disc, and a brake pad is installed on the outside of the brake shoe; a cooling mechanism is installed on the top surface of the brake disc, and the cooling mechanism comprises a shunt block, and the top surface of the shunt block is connected to a water outlet pipe, and a cooling nozzle is installed at the end of the water outlet pipe; a collecting mechanism is installed at the bottom of the brake disc, and the collecting mechanism comprises a collecting box, a water pump and a water supply pipe. The present application has the advantage of being able to cool and dissipate heat for the brake disc.

The invention provides a dual-motor anti-backlash heavy-load numerical control rotary table, and belongs to the field of numerical control machine tools, the dual-motor anti-backlash heavy-load numerical control rotary table comprises a main base body, a base protection top block is fixedly connected to the top surface of the main base body through a horizontal bolt, and a working platform is horizontally arranged on the top surface of the base protection top block. The rotary table can accurately rotate and position according to a preset angle, and a high-precision machining reference is provided for a workpiece, so that the size precision and the shape precision of a machined part are remarkably improved, and the requirement for high-precision machining is met. For example, in the machining process of aerospace parts, the rotary table can ensure that the machining precision reaches the micron level for machining of some holes, contours and other characteristics with extremely high precision requirements, the quality and performance of the parts are effectively improved, overall workpiece machining can be more accurate and efficient, and the machining efficiency is improved. And multiple directions can be expanded to meet the machining requirement, the bearing capacity is greatly improved, and the range of the types of machined workpieces is further widened.

The invention relates to the technical field of fixed disc brakes, and discloses a fixed disc brake capable of preventing excessive shaking of a brake disc, the fixed disc brake comprises a brake caliper group and the brake disc, the brake disc is arranged in the brake caliper group, and a cooling assembly for cooling the high-temperature brake disc is arranged in the brake caliper group. An anti-shaking assembly used for preventing the brake disc from excessively shaking when the brake disc is braked is arranged in the brake caliper set, an emergency braking assembly used for conducting emergency braking on the brake disc is arranged in the brake disc, through arrangement of a cooling assembly, the brake disc is rapidly cooled, and even under the extreme braking condition, the brake disc can be rapidly cooled. Reliable braking performance can be provided for a driver even if emergency braking or long-time continuous braking occurs, the cooling tank and the sealing pipe can be replaced, so that the whole cooling system has a recycling function, and the problems that the braking performance of a traditional brake is reduced due to high temperature, and an automatic recovery mechanism does not exist are solved.

The utility model discloses a large-ramp locomotive magnetic track safety auxiliary braking device, and belongs to the technical field of locomotive magnetic track braking. Comprising a brake box, inclined plates are fixedly connected to the two sides of the brake box, first magnetic attraction frames are arranged on the two sides of the interior of the brake box, a plurality of second magnetic attraction frames are arranged between the two first magnetic attraction frames, the inclined plates are matched with fixing blocks, and when the first magnetic attraction frames and the second magnetic attraction frames are gathered together, the first magnetic attraction frames and the second magnetic attraction frames are mutually fixed; and when the first magnetic attraction frame and the second magnetic attraction frame are scattered, the spherical head can freely turn over in the arc-shaped groove, so that the first magnetic attraction frame and the second magnetic attraction frame as well as the second magnetic attraction frame and the second magnetic attraction frame can swing mutually, and the braking effect is improved. In the process that the first magnetic attraction frame and the second magnetic attraction frame are attracted to the rail, the angle between the first magnetic attraction frame and the second magnetic attraction frame can be freely adjusted according to the radian of the rail, and therefore the electromagnet is prevented from disengaging from the rail and affecting the braking effect of a locomotive.

The invention discloses mine transportation equipment which comprises a carrier plate, an inner cavity formed in the lower end of the carrier plate and a car hopper arranged on the carrier plate, a bidirectional driving mechanism is arranged at the bottom of the carrier plate, a locking mechanism used for limiting movement of the bidirectional driving mechanism is arranged on the bidirectional driving mechanism, operation tables are arranged on the two sides of the carrier plate, and the operation tables are arranged on the inner cavity. Any one of the operating tables can independently control the bidirectional driving mechanism or the locking mechanism. The device is simple in structure and reasonable in design, a driver can freely select the operation position in the front-back running process of the device through the arrangement of the double operation tables, each operation table can independently control the bidirectional driving mechanism and the locking mechanism, and therefore it is guaranteed that the driver can observe the states of the road surface and the car hopper in real time when running in different directions, and the driving safety is improved. According to the design, the operation flexibility and the driving safety of the equipment are improved, and particularly in a complex mine environment, the operation risk caused by the limited view can be effectively reduced.

The utility model discloses a disc brake preforming press which comprises a machine frame, a pressing plate is arranged on the machine frame, a die is arranged below the pressing plate, the die comprises an upper die and a lower die, a discharging groove is formed in the lower die, a positioning bottom plate is arranged at the bottom of the discharging groove, and a die lifting device is arranged on the lower die. According to the die, the thickness of the machined brake pad is adjusted by adopting the liftable positioning bottom plate, so that the applicability of equipment is greatly improved. And secondly, through the die and the spreading device, multi-layer and multi-ingredient production of the brake pad is achieved, the brake performance of the produced brake pad is improved, and the service life of the brake pad is prolonged. And secondly, by arranging the steel backing placing device, the automation degree of the equipment is greatly improved, and manual operation steps are effectively reduced. And thirdly, by arranging a controller, the intelligent level of the whole equipment is further improved, and meanwhile the machining precision of products is guaranteed.

The utility model provides a door and window pulley self-locking structure, and belongs to the technical field of door and window pulleys. The door and window pulley self-locking structure comprises a frame, a plurality of pulleys are rotationally connected to the bottom end of the inner side of the frame and distributed at equal intervals, a self-locking mechanism is arranged on the inner side of the frame and comprises a lifting plate, a brake block is installed at the bottom end of the lifting plate, and telescopic rods are installed on the two sides of the top end of the lifting plate. A fixing plate is installed at the top end of the telescopic rod, one side of the fixing plate is fixedly connected with the top end of the inner side of the frame, the telescopic rod is sleeved with a first spring, the top end of the first spring is connected with the bottom end of the fixing plate, the bottom end of the first spring is connected with the top end of a lifting plate, and an unlocking mechanism is installed at the top end of the lifting plate and comprises a vertical frame. According to the sliding wheel self-locking device, the self-locking function of the sliding wheel can be effectively achieved, doors and windows are prevented from moving accidentally, and the sliding wheel self-locking device has high practical value.

The present invention discloses an underground self-protection endless rope continuous traction vehicle, which relates to the field of endless rope continuous traction vehicles, and includes a mobile base and a power system. One end of the mobile base is provided with an anti-slip device, and the lower end of the mobile base is provided with a brake device. The present invention can reduce the moving speed of the mobile base until the mobile base stops, and the setting of the brake device can increase the friction with the track, and strengthen the braking effect of the endless rope continuous traction vehicle. Secondly, it can clamp and fix the steel rope, and can brake the endless rope continuous traction vehicle, and can share the friction of four groups of No. 1 brake pads and two groups of No. 2 brake pads. At the same time, it can increase the friction area between the four groups of guide wheels and the steel rope, improve the friction of the two, and further strengthen the braking effect of the endless rope continuous traction vehicle, so that the mobile base is more stable when braking.

The utility model discloses a kind of multi-cylinder high-performance brake caliper, including caliper shell and support, multiple sub-pump cylinder bodies are provided on caliper shell, piston is provided in each sub-pump cylinder body, brake pad assembly is provided on piston, brake pad assembly includes sound-absorbing sheet, metal backplate, heat insulating sheet, heat sink and friction block, the inner end surface of heat sink and friction block is bonded fixed;Limiting recess is provided on the inner end surface of heat sink, heat insulating sheet is embeddedly set in limiting recess, the inner end surface of heat sink and the outer end surface of metal backplate are bonded fixed, the inner end surface of metal backplate and the outer end surface of sound-absorbing sheet are bonded fixed;Positioning plate is integrally provided on the upper end of support, the upper end of metal backplate is provided with positioning sliding block;Positioning lug is provided on the lower end of caliper shell, the lower end of metal backplate is provided with guide through-hole, positioning lug one end passes through guide through-hole setting.The above technical solution, structure design is reasonable, braking performance is stable, brake pad heat dissipation performance is good, heat insulation effect is good and practicality is good.

The utility model provides a safety anti-collision protection device for a portal crane, which relates to the technical field of protection devices and comprises a main body mechanism, a speed reducing mechanism is fixedly mounted on one side of the outer wall of the main body mechanism, and the main body mechanism comprises two underframes. In the utility model, under the action of the main body mechanism and the speed reducing mechanism, the range finder and the camera can observe the condition around the crane carriage, and when the crane carriage encounters an obstacle, the air cylinder can drive the brake pad to move to clamp the supporting beam, so that the braking effect is improved, and the crane carriage is prevented from being collided to cause damage to internal parts; when the crane carriage is collided, the baffle plate starts to be stressed and contracted to extrude the damper and the spring, and the damper and the spring not only can absorb the impact force, but also can drive the piston to extrude the air in the shell, so that the influence of the impact force on the device is further reduced; and the safety and the efficiency of lifting operation are improved.