30 results about "Wedge cushion" patented technology

The utility model provides a curtain wall unit body hanging weight assembly which comprises a first hanging weight structure arranged on one side of an inclined curtain wall unit body and a second hanging weight structure arranged on the other side of the inclined curtain wall unit body on the second side, and the first hanging weight structure and the second hanging weight structure are oppositely arranged. The first hanging weight structure and the second hanging weight structure each comprise a wedge-shaped cushion block with a preset inclination angle, and the wedge-shaped cushion blocks are fixed to the side faces of the curtain wall unit bodies and matched with the side faces of the inclined curtain wall unit bodies. The fixing piece is fixedly connected with the wedge-shaped cushion block, and the wedge-shaped cushion block fixes the inclined curtain wall unit body on a main body structure through the fixing piece. According to the utility model, the curtain wall unit bodies with different inclination angles can be mounted, the curtain wall unit bodies are ensured to be perpendicular to a main body structure, and the mounting quality and attractiveness of the curtain wall are improved.

The utility model discloses a portable inclination error calibration device for an automobile brake pedal force meter, which comprises a frame, the frame comprises an upper supporting plate, a lower supporting plate and two vertical rods, each vertical rod is sleeved with an upper wedge-shaped gasket and a lower wedge-shaped gasket, the wedge-shaped surfaces of the two wedge-shaped gaskets face inwards, and the wedge-shaped surfaces of the two wedge-shaped gaskets face inwards. Two ends of the lower supporting plate are respectively provided with a sleeve hole, the lower supporting plate is sleeved on the vertical rod through the sleeve holes, the lower supporting plate is positioned between the two wedge-shaped gaskets, and the lower supporting plate is clamped and inclined by the wedge-shaped surfaces of the upper wedge-shaped gasket and the lower wedge-shaped gasket; a lifting rod; a force sensor; wherein the lifting rod is arranged on the upper supporting plate, and the force sensor is arranged at the bottom end of the lifting rod. The calibration device can calibrate the positive pressure and the inclined pressure of the pedal force meter, and is portable and wide in applicability.

The invention belongs to the technical field of intelligent manufacturing, and relates to an automatic processing production line and an automatic processing method for wedge-shaped cushion blocks. The automatic machining production line comprises a feeding truss, a four-axis machining mechanism, a double-face machining mechanism, a double-head carving mechanism and a discharging conveying table, the four-axis machining mechanism comprises a four-axis support and a slope cutter head, the double-face machining mechanism comprises two two-axis supports, a polishing mechanism and a fillet cutter, and the double-head carving mechanism comprises a three-axis support and a cutter head base. The automatic machining method comprises the steps that the slope cutter head conducts slope machining on a plate, the fillet cutter conducts fillet machining on the plate, the polishing mechanism polishes the upper surface and the lower surface of the plate, and the cutting tool on the cutter head base machines the plate into a plurality of wedge-shaped cushion blocks. According to the wedge-shaped cushion block machining device, the three machining mechanisms are arranged, full-automatic machining of wedge-shaped cushion blocks is achieved, manual operation of machining equipment is not needed, the polishing mechanism can conduct overall polishing before plate cutting, and the quality of wedge-shaped cushion block finished products is improved.

The invention discloses an orthotropic material surface inside and outside coupling working condition loading device and method, and relates to the technical field of material mechanical property testing. The device comprises a main body connector, a connecting cylinder, a connecting rod, a clamping block, a fixing bolt, a spring positioning pin, a tested piece, a positioning hole, a wedge-shaped gasket, a screw hole and a self-locking slope. A preset space included angle between a dangerous section of a tested piece and a tensile machine load is realized through a spherical triangular pyramid structure of a main body connector, and five-axis and below working condition setting with a complex load ratio is realized by virtue of a connecting cylinder with a specific angle design and a test piece in a specific material main direction; efficient adjustment of working conditions is achieved through cooperation of threaded connection and spring positioning pins. The device solves the problems that in-plane and out-plane coupling loads cannot be provided, the structure is complex, the cost is high, and the working condition adjusting efficiency is low in the prior art, has the advantages of being low in cost, compact in structure, high in reliability and high in adaptability, and can be widely applied to multi-axis mechanical property testing of orthotropic materials.

The utility model relates to a temporary anchoring device for dismantling a No.0 block of a concrete continuous beam cantilever. The temporary anchoring device comprises an anchoring bearing beam, an anchoring prestress, an anchoring hole channel, a wedge-shaped cushion block, a frame connecting rod and an anchoring cross beam, the anchoring bearing beam is placed on the top surface of the box girder, the upper end of the anchoring prestress is anchored on the anchoring bearing beam, and the lower end of the anchoring prestress is anchored below the anchoring cross beam; frame connecting rods and anchoring cross beams which are connected with each other are arranged at the outlet position of an anchoring hole channel of a pier and surround the periphery of the bottom of the pier. The wedge-shaped cushion block is arranged between an anchoring hole channel outlet of the bridge pier and an anchoring cross beam, and anchoring force is transmitted to the bridge pier. Compared with the prior art, the bearing capacity of the bridge pier is fully utilized, the No.0 block and the bridge pier are anchored into a whole, and the reliable anchoring effect is provided.

The utility model discloses a low-voltage power distribution emergency power supply rapid access electric connector, which comprises a shell, the shell is vertically through, a joint is arranged in the shell, the joint is rotatably connected with the inner wall of the shell, the upper end of the shell is in threaded connection with a first fixing seat, the upper end of the first fixing seat is rotatably connected with a second fixing seat, and the second fixing seat is in threaded connection with the shell. A pressing piece is arranged at the end of the second fixing seat, one end of the second fixing seat is in threaded connection with a tail cover, a wedge-shaped gasket is arranged on the inner wall of the tail cover, and the lower end of the wedge-shaped gasket is thin, and the upper end of the wedge-shaped gasket is thick. According to the low-voltage power distribution emergency power supply rapid access electric connector provided by the utility model, through arrangement of related assemblies such as the joint rotatably connected with the inner wall of the housing, when the cable rotates under the action of external force, the housing is fixed on a power supply box, and the cable in the housing can drive the first fixing seat and the second fixing seat to rotate; therefore, rotation of the shell on the power supply box is reduced, and the possibility that the device is separated from the power supply box is reduced.

The invention relates to an online adjustable dock pump mounting bottom plate and a mounting method of the bottom plate. The mounting bottom plate comprises a pump bottom plate body, wedge-shaped cushion blocks, adjusting devices, sealing rings and fixing and connecting devices. The pump bottom plate is an annular mounting plate with an L-shaped section, one end of the annular mounting plate is a spigot, the circumference of the annular mounting plate is positioned on the inner ring of the foundation ring, and the other end of the annular mounting plate is arranged between the foundation ring and the pump water outlet elbow; the wedge-shaped cushion block is cushioned between the foundation ring and the pump bottom plate, one end of the adjusting device is clamped at the tail of the wedge-shaped cushion block, and the other end of the adjusting device is screwed into the pump bottom plate; the pump water outlet elbow, the pump bottom plate and the foundation ring are fixed together through the fixed connecting device, the sealing device is arranged on the contact plane of the pump bottom plate and the pump water outlet elbow, and the sealing device is arranged on the contact ring surface of the pump bottom plate and the foundation ring. According to the method, the levelness can be conveniently adjusted, the technical quality requirement on foundation civil engineering can be reduced, the sealing reliability of each joint surface before and after adjustment can be ensured, and the risk that a dock pump house is flooded is greatly reduced.

The utility model discloses a twelve position numerical control lathe tool disc range -increasing tool holder device belongs to machining manufacturing technical field. Including tool holder body, locking clamp, wedge gasket, M8 screw, M6 screw, the tool holder body presents concave character shape, is used for the horizontal of tool Put down, the right lower corner of tool holder body front is provided with the connecting hole, locking clamp front upper portion, middle part, lower part is provided with three connecting holes, the right lower connecting hole of tool holder body adopts M6 screw and locking clamp upper portion connecting hole links, locking clamp middle part and lower part connecting hole adopts M6 screw and twelve position numerical control lathe tool rest tool holder inner upper thread hole connection, wedge gasket wedge shape coincides with locking clamp wedge shape, and when using, insert twelve position numerical control lathe tool rest tool holder inner, and screw up M6 screw and fix tool holder body in twelve position numerical control lathe tool rest tool holder, adopt M8 screw and fix tool make tool physical installation move 100mm distance on. The utility model solves the problem of numerical control machine tool processing range reduction and reduces the use value.

The utility model relates to the technical field of steel analysis, in particular to a test device for milling and leveling a steel billet macroscopic sample, which comprises a milling machine table, an irregular steel plate, a threaded rod, a first nut, a first wedge-shaped cushion block, a second nut and a second wedge-shaped cushion block, movable grooves are formed in the interiors of the two bases, double-end lead screws are movably connected to the interiors of the two movable grooves, rotating shafts penetrating through the bases are fixedly connected to one ends of the two double-end lead screws, and threaded blocks are connected to the left sides and the right sides of the exteriors of the two double-end lead screws in a meshed and sleeved mode; according to the test device for milling, grinding and leveling the low-power sample of the steel billet, disclosed by the utility model, the problems of milling and grinding difficulties caused by thickness errors of the sample are solved, the safety risk caused by manually hitting a wedge-shaped cushion block is reduced, and the stability in the sample processing process is ensured, so that the quality and the efficiency of milling and grinding the steel billet sample are ensured and improved.

The utility model provides an assembly rack for heat exchange internals of a nuclear power high-temperature reactor evaporator, which can meet the requirements of high precision and high reliability of assembly of the heat exchange internals of the high-temperature gas cooled reactor evaporator and improve the assembly efficiency and quality. The telescopic mechanism is arranged on the frame, and the positioning wheel is arranged on the telescopic mechanism; the internal part supporting tool is arranged at the top of the frame; the supporting frame is arranged on the top of the frame. The fixed base is fixedly arranged on the supporting frame; the transverse sliding seat is transversely and movably arranged on the fixed base; the transverse adjusting bolt is connected with the transverse sliding seat; the vertical adjusting plate is arranged on the transverse sliding seat in an up-down moving manner; the vertical adjusting bolt is connected with the vertical adjusting plate; the pressing hoop is fixedly arranged on the vertical adjusting plate; the water supply pipe supporting tool is arranged at the bottom of the frame and comprises a supporting seat and a water supply pipe tool; the supporting seat is arranged at the bottom of the frame; the flange seat is arranged on the supporting seat, and a positioning hole is formed in the flange seat; the wedge-shaped pad assembly is arranged between the flange base and the supporting base.

The invention relates to an offshore converter station jacket and LMU folding welding construction process. The method comprises the steps of groove arrangement, wherein the groove of the cylinder wall of the lower end of an LMU is 30 degrees, and the groove of the cylinder wall of an upper opening of a jacket is 15 degrees; mounting a liner: pre-mounting the steel liner on the inner side of the cylinder wall at the lower end of the LMU; wedge-shaped cushion blocks are welded on the cylinder wall of the upper opening of the jacket at intervals; hoisting: enabling the cylinder wall of the lower end of the hoisted LMU and the cylinder wall of the upper opening of the jacket to form a qualified butt joint through the matching of a guide block and a steel liner; fixing the code plate; preheating is conducted, and multi-layer and multi-pass welding is adopted for groove welding seams; and detecting. The method has the advantages that the risk of incomplete fusion of a lower groove is reduced by selecting the groove angle with the large upper part and the small lower part; the steel liner is adopted to facilitate fusion of the root of a welding seam, the welding difficulty of single-face welding and double-face forming is reduced, butt joint is more accurate, the wedge-shaped cushion block is adopted to facilitate high-precision control over hoisting assembly gaps, and high-precision assembly and high-quality welding are completed.

The present application relates to the field of floating slab track technology, and particularly relates to a shear hinge design construction method of a prefabricated steel spring floating slab track, which comprises the following steps: during the installation of the shear hinge: when the shear hinge is located in a straight line and a circular curve section, a flat pad is arranged between the shear plate and the surface of the prefabricated floating slab; when the shear hinge is located in a transition curve section, a corresponding specification of height-adjusting pad and wedge-shaped pad are arranged according to the height difference on one side of the adjacent prefabricated floating slab, the height-adjusting pad and the wedge-shaped pad are arranged between the shear plate and the surface of the prefabricated floating slab on the corresponding side, and the height-adjusting pad is arranged above the wedge-shaped pad; after the flat pad, the wedge-shaped pad and the height-adjusting pad are installed, the shear hinge and the prefabricated floating slab are connected and fixed. The present application has the advantages that the installation requirements of the shear hinge in different sections are met, the adjustment of the shear hinge in different sections is facilitated, and the construction efficiency and the construction quality are improved.

The invention discloses an adjustable fixing structure for a flexible direct current transformer valve side voltage equalizing pipe, and relates to the technical field of flexible direct current transformer equipment.The adjustable fixing structure for the flexible direct current transformer valve side voltage equalizing pipe comprises a vertical bar installed on a support; the wire fixing clamps are mounted on the vertical bar and are arranged in pairs; the adjusting mechanism is arranged on the vertical bar and corresponds to the wire fixing clamps, the adjusting mechanism comprises an inclined wire clamp, a slotted wire clamp and a wedge-shaped cushion block which are stacked in sequence, the inclined wire clamp is located on the side, away from the other wire fixing clamp, of the corresponding wire fixing clamp and is fixedly connected with the vertical bar in a clamped mode, and the wedge-shaped cushion block abuts against the wire fixing clamps. The wedge-shaped cushion block is used for adjusting the distance between the two wire fixing clamps; according to the adjustable fixing structure, it is guaranteed that the axis position of the wire fixing clamp is consistent with the target axis position of the uniform valve side pressure pipe body, the height manufacturing tolerance of the uniform valve side pressure pipe body is solved, and finally the consistency of the trend of the uniform valve side pressure pipe body and the trend of the sleeve is guaranteed.

This invention provides an inexpensive anti-loosening wedge washer device that can firmly and permanently prevent loosening caused by aging, such as wood shrinkage, in joints of wooden buildings using bolts and nuts. The device compensates for and prevents screw loosening due to shrinkage of joined members by increasing the washer's thickness. The washer has a truncated cone-shaped lid, and a truncated cone-shaped collar protrudes coaxially with the concave bolt hole. An annular wooden wedge, having a volume larger than that of the tapered annular space inside the washer, is pressed inwardly by screw tightening. The bulging restoring force of the compressed wooden wedge compensates for the shrinkage of the joined members. As a result, gaps caused by wood thinning are absorbed by the increased washer thickness, enabling long-term prevention of loosening in the joint.

1. The name of the design product: foot wedge. 2. The use of the design product: for foot training, correcting body posture. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

The application provides a pipeline integrated sealing device, which comprises a first sealing cylinder and a sealing assembly. The first sealing cylinder is provided with a first upper flange and a first lower flange on both sides, and is further provided with a fixed flange on one side. There are at least eight adjusting rods in the first sealing cylinder. The sealing assembly comprises a sealing piece and a second sealing cylinder. The sealing piece is provided with a first annular pad at one end. The sealing piece is sealed by being attached to the second sealing cylinder through the first annular pad. The outer wall of the other end of the sealing piece is provided with a wedge-shaped pad. The other end of the sealing piece is attached to the fixed flange through the wedge-shaped pad. The adjusting rods are adjusted to make the sealing piece tightly attached to the fixed flange through the wedge-shaped pad for sealing. The pipeline integrated gravity is used for tightly sealing, and multiple adjusting rods are used for tightly sealing at the same time. The sealing performance is not affected by the liquid hydrogen storage tank.

The utility model relates to a hollow wedge-shaped steel gasket device which comprises a steel plate and two wedge-shaped base plates, the two wedge-shaped base plates are vertically and symmetrically arranged on the steel plate, and a hole is formed in the steel plate between the two wedge-shaped base plates. The device is used for the connecting part of the foundation pit supporting anchor cable and the waist beam, and ensures that the anchoring section of the anchor cable is vertically stressed.

The utility model relates to the technical field of tire vulcanizing machine structures, in particular to a novel vulcanizing steam chamber of a hydraulic tire vulcanizing machine. Comprising a lower vulcanizing chamber, the lower end of the lower vulcanizing chamber is provided with a circular-ring-shaped connecting part, and the inner side of the circular-ring-shaped connecting part is provided with a plurality of first tooth-shaped pieces distributed in a circumferential array mode; a plurality of second tooth-shaped pieces distributed in a circumferential array are arranged on the outer side of the upper edge of the base; and the like; by means of the locking structure of the first tooth-shaped piece and the second tooth-shaped piece and the combination of the anti-rotation support, the centering adjusting assembly and the wedge-shaped heightening assembly which are of the specific structure and position relation, an original structure that the lower vulcanizing chamber and the base are connected in an embracing mode through a large hoop can be replaced, better stability is achieved, centering and positioning operation is simpler, and production efficiency is improved. Relative rotation displacement between the lower vulcanizing chamber and the base can be effectively avoided, a large hoop structure is omitted, the overall weight of the vulcanizing steam chamber caused by a large hoop is reduced, and the material cost is saved.

A device for automatically adjusting centrifugal force of an external vibrator belongs to the technical field of building machinery. According to the technical scheme, inclined eccentric blocks in an inclined disc shape are manufactured, installed at the two ends of a motor shaft of the external concrete vibrator respectively and fixed through keys, a wedge-shaped gasket I and a wedge-shaped gasket II are arranged on the left side and the right side of each inclined eccentric block in a cushioned mode respectively, and the shaft end is axially fixed through an elastic clamping ring for a shaft; bearing seats are fixed to the two ends of a machine shell of the vibrator respectively and connected with the machine shell through first thread pairs, and first annular ventilation holes are formed in the bearing seats. End covers are fixed outside the two bearing seats respectively and connected with the machine shell and the bearing seats through thread pairs II, and ventilation holes II which are evenly distributed in the circumference are formed in the end covers. The utility model has the beneficial effects that the uniquely designed inclined disc-shaped inclined eccentric block has the function of a fan, can forcibly dissipate heat, and is matched with the ventilation holes on the bearing seat and the end cover, so that the temperature rise of the vibrator motor is greatly reduced, the defects of the existing external vibrator concrete are overcome, the service life is prolonged, the design is novel, and safety and reliability are realized.

This invention discloses a three-way adjustable squirrel cage flipping fixture, relating to the field of fixture manufacturing technology. It includes an upper squirrel cage, a lower squirrel cage, a circular T-shaped track, and a triangular fixture. The upper and lower squirrel cages are symmetrically arranged. A circular T-shaped track is located at the lower interior of the lower squirrel cage, and the track is detachably connected to the inner wall of the lower squirrel cage. A triangular fixture is located on the inner side of the circular T-shaped track. Hanging shafts are located on the upper and lower side walls of the squirrel cage fixture. The triangular fixture includes a slide rail, a slider, an adjustable wedge-shaped pad, triangular support legs, and adjusting bolts. This invention achieves precise docking between the entire fixture and the engine by attaching the triangular fixture, which is connectable to the engine, to the circular T-shaped track, allowing the triangular fixture to slide along the track. The hanging shaft serves as the flipping connection point for the squirrel cage fixture. The triangular fixture can move back and forth in all three directions and is self-locking at any position.

The invention discloses an enhanced quick-assembly multi-directional node connecting device for a composite material profile, which comprises an inner sleeve piece, an outer sleeve piece and a connecting piece, the outer sleeve is arranged outside the assembling side pipe opening of the composite material profile pipe in a sleeving mode; and the wedge-shaped cushion block is arranged between the inner wall of the outer sleeve and the outer wall of the assembly side pipe opening of the composite material profile pipe. The connecting mode of the mechanical self-locking principle is adopted, machining damage to the composite material can be avoided, and the joint bearing capacity can be improved through the friction self-locking effect; on the basis of high assembly, the connection requirements of multi-direction complex nodes can be met, remarkable advantages and potential can be shown under tension and compression loads, the performance of a composite material is fully played, and efficient connection is achieved.

The utility model relates to the technical field of pipeline leakage prevention, in particular to a leakage-proof connecting structure of a process pipeline. The wedge-shaped gaskets are jointly arranged in the conical grooves, the belleville springs matched with the bolts in size are installed between the bolts and the installation holes, the pre-compressed belleville springs are arranged between the bolts and the installation holes, and elastic force can be released in real time under the vibration working condition through the elastic energy storage characteristic of the pre-compressed belleville springs; belleville springs can dynamically compensate bolt pre-tightening force loss caused by vibration, the sealing crushing risk caused by a traditional rigid pre-tightening mode is reduced, when the wedge-shaped gaskets embedded in the conical grooves are subjected to axial pressure, part of axial force is converted into radial expansion force through wedge-shaped arrangement of the wedge-shaped gaskets and geometric matching of the conical grooves, and therefore the sealing effect is improved. The radial pressure directly acts on the sealing face formed by the first flange plate and the second flange plate, even if the bolt pre-tightening force is lost due to long-term vibration, the tight contact of the sealing face can still be maintained through the radial pressure, and the leakage prevention of the structure is jointly guaranteed through the synergistic effect of the belleville spring and the wedge-shaped gasket.

The utility model relates to a bridge double-Y special-shaped pier body supporting device which comprises a deformed steel bar pull rod, a first wedge-shaped cushion block, a transverse back ridge and a disc buckle supporting frame, and the disc buckle supporting frame is supported below a formwork support of a double-Y special-shaped pier body. The deformed steel bar pull rod transversely penetrates through two outer side face formworks of the formwork support, a plurality of first wedge-shaped cushion blocks are arranged on the outer side face formworks, the inclined faces of the first wedge-shaped cushion blocks abut against the two outer side face formworks of the formwork support respectively, and the side faces, away from the outer side face formworks, of the first wedge-shaped cushion blocks are locking faces. Transverse back ridges are arranged on the locking face of the first wedge-shaped cushion block, the two ends of the deformed steel bar pull rod penetrate through the two corresponding transverse back ridges respectively, the two ends of the deformed steel bar pull rod are provided with locking nuts abutting against the transverse back ridges respectively, and the locking nuts are double-nut locking mechanisms. Through external and internal support of the double-Y special-shaped pier, the support structure achieves the purposes of high efficiency, safety, high quality and convenient construction.

This invention discloses a threaded anti-loosening structure based on an eccentric wedge washer and its usage method in the field of fastener anti-loosening technology. The structure includes a bolt, at least two sets of stacked plates, a wedge washer, and a nut. One side of the wedge washer has a first ratchet that meshes with the nut to form a circumferential anti-loosening structure. The other side of the wedge washer has radial straight teeth that mesh with the plates to form a friction zone. A wedge-shaped protrusion is provided on the inner side of the wedge washer along the circumferential direction. This invention achieves efficient conversion of axial tightening force to radial locking force through a triple synergistic mechanism of circumferential ratchet locking, radial eccentric locking, and end-face friction anti-loosening, combined with the precise geometric parameter design of the wedge protrusion. This generates 2-3 times the additional friction torque, ensuring a residual preload ≥85% under dynamic load, significantly improving the anti-loosening reliability of multi-set stacked plate connections, and fundamentally solving the problem of threaded pair vibration loosening.

The utility model provides a hanging basket support for installing a high-rise curved surface curtain wall, a connecting mechanism is arranged at the bottom of a stand column so as to be fixed on a steel structure cross beam on the edge of a building, and a first connecting station and a second connecting station which respectively point to the inner side and the outer side of the building are arranged in the middle of the stand column; the rear beam is connected to a steel structure cross beam in the middle of the building through a connecting mechanism; the front beam extends out of the building facade, a hanging cable is arranged at the end, away from the stand column, of the front beam, and the hanging basket is connected to the hanging cable through a lifter. The connecting mechanism comprises a bottom plate and U-shaped bolts, two wedge-shaped cushion blocks are arranged on the side portion of the steel structure cross beam, and an ejector rod is arranged between the large ends of the wedge-shaped cushion blocks so as to drive the small ends of the two wedge-shaped cushion blocks to stretch into the positions between the two U-shaped bolts and the steel structure cross beam. Through the unique connecting mechanism design, the stand columns and the supporting columns are firmly fixed to steel structure cross beams on the edges and the middle of a building, and a stable supporting structure is formed.

The utility model belongs to the field of municipal engineering, and particularly relates to a municipal engineering pipeline storage balance cushion block which comprises a right-angle wedge-shaped cushion block, the top face of the right-angle wedge-shaped cushion block is an arc-shaped face, two grooves are formed in the bottom face of the right-angle wedge-shaped cushion block, ground gripping nails are fixed in the grooves, and the ground gripping nails protrude downwards out of the bottom face of the right-angle wedge-shaped cushion block by 1-2 mm. The bottoms of the ground gripping nails can be embedded into gaps of a concrete cushion layer; a flexible handle is fixed to the side face of the right-angle wedge-shaped cushion block. The pipe stacking device is large in friction force, reliable in road holding force, not prone to displacement, stable in pipe stacking and high in safety.

A modular knee brace assembly includes a brace and a wedge. The brace comprises a sleeve portion comprising a first opening at a first end of the sleeve portion and a second opening at a second end of the sleeve portion, the first opening and the second opening adapted to enable a first portion of a user's body to pass through the sleeve portion and a second portion of the user's body to remain within the sleeve portion and a first mating unit comprising a plurality of discrete attachment points coupled to an outer surface of the sleeve portion. The wedge comprises a second mating unit, wherein the second mating unit is adapted to couple with a set of the plurality of discrete attachment points to support one or more portions of the user's body.