540 results about "Block structure" patented technology

A light opening and closing force buffering structure comprises a shell, a damping rod installed in the shell, sliding blocks hinged to the two ends of the damping rod and a tension spring connected between the two sliding blocks, the two sliding blocks are the same in structure and symmetrical to each other, and the tension spring is hooked to the lower ends of the sliding blocks so that the sliding blocks can have deflection force rotating downwards. A guide groove allowing the sliding block to horizontally slide along the shell is formed in the shell, a downwards-bent limiting opening is formed in the end, away from the sliding block, of the guide groove, the included angle between the limiting opening and the guide groove is set to be 90 degrees, the outline of the limiting opening is matched with the guide column, the distance between the center point of the limiting opening and the bottom edge of the guide groove is set to be L, and the limiting opening is matched with the guide column. The distance L is larger than the radius R of the guide column and smaller than the diameter D of the guide column, L is larger than R so that the guide column cannot be easily separated from the limiting opening in the moving process of the sliding door, and the buffering effect is guaranteed; l is smaller than D, so that the guide post can be easily separated from the limiting opening when the sliding block is subjected to opening and closing force, pause is avoided, and the buffering process is smoother.

The invention discloses an anti-leakage masonry wall, and aims to solve the problem that a straight-line-shaped flat joint of a traditional masonry wall is prone to leakage. The wall comprises a wall body built by building blocks, the wall body comprises a vertical section and a horizontal section, and a Z-shaped horizontal mortar joint is formed between the upper building block and the lower building block of the vertical section and is meshed through a tongue-and-groove structure; and vertical mortar joints are formed between adjacent building blocks in the horizontal section and are staggered up and down. A plain concrete bearing and blocking structure is further arranged, and a water baffle, a matched fixing edge, a limiting groove, a water swelling rubber strip, a limiting block and the like are arranged on the top of the building block. According to the structure, the water seepage path is prolonged, dynamic sealing is achieved, the masonry precision is guaranteed, the anti-seepage performance is cooperatively improved, and the building safety and durability are guaranteed.

The invention relates to the technical field of tunnel construction, and provides a shield tunnel inverted arch block structure under a large longitudinal slope condition. The shield tunnel inverted arch block structure comprises a plurality of shield segments and a plurality of prefabricated blocks, the shield segments comprise the first segments and the second segments, the first segments are provided with first fixing holes and second fixing holes, and the first fixing holes and the second fixing holes are formed in the circumferential directions of the shield segments at intervals; the multiple prefabricated blocks correspond to the multiple shield segments one to one, the prefabricated blocks are arranged on the inner surface of the first segment, fixing through holes penetrating through the prefabricated blocks in the vertical direction are formed in the prefabricated blocks, the multiple prefabricated blocks comprise the first prefabricated blocks and the second prefabricated blocks which are adjacent, the fixing through holes of the first prefabricated blocks are aligned with the first fixing holes and fixed through tightening bolts, and the fixing through holes of the second prefabricated blocks are aligned with the second fixing holes and fixed through tightening bolts. And the fixing through hole of the second precast block is aligned with the second fixing hole and is fixed through a fastening bolt. According to the shield tunnel inverted arch block structure, the risk of water leakage of the tunnel in the operation period is greatly reduced.

The invention discloses a rapidly pre-assembled model product, which is formed by mutually sleeving and assembling a trunk model, a head model, an arm model and a leg model; The head model is arranged on the top of the trunk model; The arm model includes a left arm model and a right arm model, wherein the left arm model is arranged on the left side of the top of the trunk model, and the right arm model is arranged on the right side of the top of the trunk model; The leg model includes a left leg model and a right leg model, wherein the left leg model is arranged on the left side of the bottom of the trunk model, and the right leg model is arranged on the right side of the bottom of the trunk model. The figure model of the invention is formed by mutually sleeving and assembling a trunk model, a head model, an arm model and a leg model, thus canceling the splicing form of the existing model adopting a small block structure, and through the pre-assembled modules, the modules are assembled and spliced through corresponding connecting structures, so as to make the whole model product assembled and spliced more conveniently and quickly.

The invention relates to the related technical field of subway shields, in particular to an auxiliary cushion block structure for stacking shield segments, which comprises the shield segments, and a mounting mechanism is arranged on the surface of a screw shaft. According to the auxiliary cushion block structure for stacking the shield segments, through the arrangement of the mounting mechanism, the cushion block is mounted and dismounted through the mounting and dismounting seam of the rubber cushion block, the cushion block is communicated with the screw shaft hole and is laterally clamped, the replacement process is simplified, nuts do not need to be dismounted, and during mounting, a positioning pin penetrates through the outer supporting plate, the inner supporting plate and a second positioning hole of the rubber cushion block to determine the mounting angle of the cushion block; when a positioning pin is inserted, a limiting pin is clamped into a limiting hole of the sealing gasket under the action of a second spring, the positioning pin is stabilized, after a nut is locked, a rubber cushion block is firmly fixed, a loading and unloading seam is not separated, a second retaining pin at the tail end of a screw shaft prevents the nut from being separated, all the structures cooperate, and the sealing performance is improved. Component loss is avoided, and the structural stability and practicability of the auxiliary cushion block are improved.

The invention provides a shell manufacturing mold and a manufacturing method thereof.The shell manufacturing mold comprises a male mold and a female mold, the female mold is arranged on the periphery of the male mold in a sleeving mode, the space between the male mold and the female mold is filled with prepreg, the prepreg can be cured to form the shell, and the shell is formed by the prepreg. The male die is composed of multiple sections of block structures in the circumferential direction, before prepreg is laid, the multiple sections of block structures are spliced in the circumferential direction to form the cylindrical male die, then the prepreg is laid on the outer circumferential wall of the male die and the inner circumferential wall of the female die respectively, the female die is arranged on the periphery of the male die in a sleeving mode, and the cylindrical male die is formed by splicing the multiple sections of block structures in the circumferential direction. And after the prepreg is cured to form the shell, the male mold of the multi-section block structure is subjected to block demolding. According to the invention, the block structures can be conveniently demoulded respectively to be taken out without damaging the shell product, so that the forming quality of the shell product is improved.

The utility model provides a delay elastic block structure and a forming mold applying the delay elastic block structure. The delay elastic block structure comprises a first elastic block assembly and a second elastic block assembly. The first elastic block assembly comprises a first ejection piece and a first driving piece which are in driving connection, and the first ejection piece is driven by the first driving piece to push excess materials in the ejection direction; the second elastic block assembly comprises a second ejection piece and a second driving piece which are in driving connection, the second ejection piece is in separable contact with the first ejection piece, and the second ejection piece is driven by the second driving piece to reversely abut against the first ejection piece in the ejection direction; the component force of the force applied to the second ejection piece by the second driving piece in the ejection direction is larger than the component force of the force applied to the first ejection piece by the first driving piece in the ejection direction. The forming mold comprises a fixed mold kit, a movable mold kit and a delay elastic block structure. The fixed mold suite and the movable mold suite are separably contacted to define a runner; the first elastic block assembly is connected with the fixed mold sleeve piece, the second elastic block assembly is connected with the movable mold sleeve piece, and the runner and the second elastic block assembly are located on the same side in the ejection direction.

The invention relates to the technical field of toys, and provides a joint building block structure and a toy, the joint building block structure can be switched between a complete stretching state and a complete bending state, the joint building block structure comprises a first joint head, a building block part and a second joint head, one end of the first joint head and one end of the second joint head can be spliced together to form a joint, and the building block part is connected with the joint. The building block pieces are arranged outside the joints and enable the joints not to be detached. The first joint head, the limiting plate and the second joint head are designed to be of a non-detachable structure, the joint function is achieved, meanwhile, the limiting function can be achieved, the stability of the joint is improved, partial embarrassment can be covered, the attractiveness of the toy is improved, the visual simulation degree is high, and interestingness is good.

The utility model relates to the field of assembly type building trusses, and discloses an assembly type building truss which comprises a fixing frame, the top of the fixing frame is fixedly connected with a connecting rod, one side of the connecting rod is provided with a connecting structure, the connecting structure comprises a connecting block, the inner wall of the connecting block is fixedly connected with a middle plate, and the inner wall of the middle plate is fixedly connected with a connecting rod. A spring is fixedly connected to the side wall of the middle plate, a connecting plate is fixedly connected to the other side of the spring, a side clamping block is fixedly connected to the side wall of the connecting plate, a clamping shell is fixedly connected to the bottom of the other fixing frame, and a clamping block connecting groove is formed in the inner wall of the clamping shell. According to the utility model, through the arrangement of the connecting block structure and the mutual matching between the side clamping block structure on the side edge of the connecting block and the external clamping shell structure, the connection between the two structures is realized, the splicing effect between the structures can be better realized, and the subsequent disassembly is easier after the splicing is finished.

According to the inner cavity formwork type inhaul cable anchoring system and the installation method thereof, more horizontal force and unbalanced force are borne through the multiple separated steel anchor box sections, vertical force is transmitted to the concrete tower wall, the mechanical characteristics of steel and concrete materials are fully considered, the tensile strength of a main tensile plate of the steel anchor box sections is exerted, and the tensile strength of the main tensile plate of the steel anchor box sections is improved. And meanwhile, a tower cable anchoring area is optimized into a steel tooth block and annular steel anchor box structure by utilizing an anti-pulling and non-shearing force transmission key, a traditional force transmission key and a rubber pad. According to the invention, the stress state of the tower wall can be effectively improved, the thickness of the tower wall is reduced, tower wall circumferential prestressed steel beams do not need to be arranged, meanwhile, the inner side size of the bridge tower is relatively regular, the construction is relatively convenient, the quality is easy to guarantee, the bridge tower can be used as a tower column inner film, the later welding construction is also convenient by arranging the steel tooth block structure, and the use and popularization values are relatively high.

The invention discloses a networked arrangement method for ship block construction datum lines, and relates to the technical field of ship block construction, which comprises the following steps: S1, part preparation: setting datum lines in vertical, longitudinal and transverse directions through specific analysis of a block structure form, and spraying powder and marking the datum lines in place on all structural parts in a blanking stage, wherein the datum line is divided into a cross section line, a longitudinal section line and a horizontal section line, specific datum lines are set at the longitudinal latitude, the transverse latitude and the vertical latitude of the subsection respectively, grid systems are formed on the subsection structure and distributed on the surfaces of all parts, and the subsection construction datum is controlled according to the grid lines. According to the networked arrangement method for the ship block building datum line, through brand-new arrangement of the block building datum line and brand-new control requirements in the building process, the block building precision is controllable, the block building precision meets the requirements, and the requirements for whole ship block allowance-free building, allowance repairing and cutting reduction and slipway carrying period shortening are met.

The application relates to the field of water ecological environment, in particular to a floating island device for water ecological environment, which comprises a floating block, the floating block is spliced by a plurality of rectangular block structures, hollow floating pipes for fixation are arranged at the edges of the floating block, inclined plates are installed on the four edges of the floating block, support plates are arranged in the middle sides of the inclined plates, the support plates are cross-shaped, fixed columns are arranged at the centers, the fixed columns contain power supplies, and vertical telescopic rods are installed in the inner sides of the vertically arranged support plates. The extendable air cushion structure can splice multiple floating islands into a whole according to actual control and the size of current wind and waves, and can directly adhere to the bank when necessary, so that the overall fixation integrity and the fixation effect with the bank are provided, and the phenomenon that the floating islands collide with each other to cause damage to the floating blocks is prevented.

The utility model belongs to the technical field of connector manufacturing, and particularly relates to an aluminum block structure for preventing a connector PIN from sinking, which comprises an aluminum block, a sliding groove is arranged in the aluminum block, two adjusting frames are arranged in the aluminum block, and two groups of sliding frames are connected in the sliding groove in a sliding manner. The side faces, close to each other, of each set of sliding frames are fixedly connected with the two side faces of each adjusting frame, two sets of sliding blocks and two sets of threaded frames are slidably connected into each adjusting frame, the upper surface of each sliding block is fixedly connected with the bottom face of the corresponding threaded frame, and the side faces, close to each other, of each set of sliding blocks are fixedly connected with limiting soft rings. The aluminum block is arranged to be matched with the hole of the adjusting frame, so that after the aluminum block is inserted into a PIN needle, welding has no PIN lower limit, the welding quality is improved, meanwhile, the sliding groove is matched with the sliding frame, the adjusting frame can be driven to slide in the aluminum block to adjust the position, and the threaded frame and the sliding block can be driven to slide in the adjusting frame in cooperation with rotation of the threaded rod.

The utility model relates to the technical field of anchor rod positioning, and discloses an anchor rod with a positioner, which comprises an anchor rod body, the left side of the anchor rod body is in threaded connection with an expansion shell anchor head, and the outer side of the anchor rod body is fixedly connected with four connecting blocks which are distributed in an annular array. The interiors of the four connecting blocks are rotationally connected with first connecting rods, the interiors of the four first connecting rods are rotationally connected with second connecting rods, the ends, away from the first connecting rods, of the four second connecting rods are rotationally connected with the interior of the same limiting ring, and the inner side of the limiting ring is slidably connected with the outer side of the anchor rod body; and the outer side of the anchor rod body is in threaded connection with a movable ring. The anchor rod with the positioner has the advantages of being good in positioning effect and the like, and the problem that when a triangular wooden wedge block is used for positioning the anchor rod, due to the triangular wooden wedge block structure, the situation of uneven stress possibly occurs, and consequently the anchor rod deviates is solved.

The utility model discloses a kind of module test fixture increase FPC fixed block structure, including workbench one, the product placement groove one is equipped in workbench one middle part, the workbench one front end is equipped with workbench two, the workbench two is equipped with recess, the recess is equipped with product placement groove two, the left and right sides of product placement groove two are equipped with limit slot, the recess front side is equipped with two connecting holes one, the recess outer left and right sides each is equipped with one connecting hole two, the utility model can be with good fixed product, and can prevent misplacement, improve work efficiency.

The utility model discloses a lower sliding block of a narrow sliding door, which comprises a first fixed block and a second fixed block, the first fixed block is connected with the second fixed block, the first fixed block is connected with a fixed glass door, the second fixed block is provided with a sliding chute, and a movable glass door is connected in the sliding chute in a sliding manner. The first fixing block is provided with a first connecting groove corresponding to the fixed glass door and a second connecting groove corresponding to the guide rail, the first connecting groove and the second connecting groove are located on the two sides of the first fixing block respectively, the lower sliding block structure is more stable and convenient to match with the fixed glass door and the movable glass door, the structure is simple, and cost is reduced.

The utility model belongs to an exterior part at a core-pulling structure of an automobile lamp, and particularly relates to a structure for preventing a sliding block mark on the front surface of the core-pulling structure, which comprises a sliding block structure, a modeling surface in contact with the sliding block structure and an inner wall in contact with the sliding block structure, and the inner wall is connected with the modeling surface. A pattern structure is arranged on the modeling surface at the joint of the inner wall and the modeling surface, the thickness of the inner wall close to the modeling surface is a, the thickness of the inner wall away from the modeling surface is b, a is smaller than b, the thickness a of the inner wall close to the modeling surface is smaller than or equal to 1 mm, and the pattern structure is any one of creases, fillets, convex ribs and grooves. The automobile lamp is simple in structure, the appearance of the automobile lamp can be effectively improved, and the requirements of customers are met.

The invention discloses a slip form blade foot and method for applying prepressing strain to well wall cast-in-place concrete.The slip form blade foot is of an annular structure and comprises a plurality of blade foot block structures connected end to end, and each blade foot block structure comprises a blade foot block body, a vertical displacement generating device, a displacement sensor and a limiting plate; the vertical displacement generating device is arranged between the lower plate and the cambered surface plate and used for driving the cambered surface plate to move in the vertical direction. The displacement sensor is arranged at the telescopic end of the vertical displacement generating device; the device is suitable for the vertical shaft wall constructed through the top-down and short-digging and short-building technology, the cast-in-place concrete can be extruded by applying upward displacement to the cambered surface plate, pre-pressing strain can be rapidly and accurately applied to the cast-in-place concrete of the shaft wall, and the construction efficiency is improved. The compactness of cast-in-place concrete and continuous cast-in-place concrete in the well wall section is improved, and the overall water sealing performance of the well wall is remarkably improved.

The present invention provides a novel precast invert block structure for tunnels, which relates to precast invert blocks for tunnels and includes a precast invert. A bottom formwork is provided on the inner bottom wall of the precast invert, and side formworks are provided on both side surfaces of the precast invert. A reinforcing steel plate is fixedly installed on one side surface of each side formwork, and end formworks are fixedly installed on both outer sides of the bottom formwork. The secondary lining invert part, the invert backfill part, and the road surface base layer are integrally precast into a whole through the precast invert, and all invert construction can be completed by prefabricating and assembling the precast invert components at one time; the enlarged bolt holes greatly improve the connection success rate between precast blocks and enhance the adaptability to the planar alignment; the uniformly distributed circular holes make the overall stress of the precast components more reasonable, avoid the need for in-situ casting on both sides, improve the construction efficiency, and ensure better construction quality. Moreover, it avoids the need for two assemblies, realizes low-carbon environmental protection, and has a high degree of industrialization.

The invention discloses a machining device for a building formwork of a special-shaped structure. The machining device comprises a main body structure, a groove frame assembly and a bent blocking structure. The groove frame assembly is detachably arranged on the main body structure, the bending and blocking structure is detachably arranged on the main body structure, and the bending and blocking structure can be in butt joint with the groove frame assembly in an attached mode. The plate injection mold is high in shape adaptability and wide in application range, and regular or irregular spaces such as a rectangular space, a square space and an L-shaped space can be formed in a surrounding and blocking mode; the bending degree and length of the bending rod are adjusted through the electric sliding rail, an arc-shaped side wall is formed, diversified combination of a straight line and an arc is achieved, the machining requirements of multi-range irregular plates are met, overall disassembly, assembly and adjustment are convenient, the operation efficiency is high, the time cost of die replacement is reduced, the irregular plates are integrally formed, later cutting and trimming are not needed, and the production cost is reduced. The processing steps are reduced, the production efficiency is improved, and the material loss and the additional processing cost are reduced.

The debris flow blocking structure comprises a plurality of blocking structure bodies, and the multiple blocking structure bodies are arranged in a ditch body of a debris flow ditch at intervals in the first direction; the blocking structure body comprises multiple steel pipe piles, a first protective net and connecting steel pipes, the multiple steel pipe piles are arranged at intervals in the first direction and the second direction, and the steel pipe piles are fixedly connected with a covering layer in the ditch body and partially exposed out of the upper surface of the covering layer; the first protective net is laid on the tops of the multiple steel pipe piles, and the connecting steel pipes are located on the top of the first protective net and connected with at least part of the adjacent steel pipe piles. The first direction is the extension direction of the debris flow gully, and the second direction is the width direction of the debris flow gully. The debris flow blocking structure can achieve the effects of restraining starting of debris flow and reducing the debris flow risk through simple construction tools and a small amount of building materials.

This utility model discloses a gravity-interlocked sloping breakwater revetment block structure, belonging to the field of coastal protection engineering technology. It aims to solve the problems of large-mass blocks being prone to fracture due to material strength limitations, and the non-linear increase in material consumption and cost resulting from simply adding weight; and the chain-like instability problem easily caused by two-dimensional interlocking designs under oblique wave action. The gravity-interlocked sloping breakwater revetment block structure includes a central block and corner blocks. The corner blocks are fixedly installed at the top corner of the central block. Embedded bosses and embedded grooves are fixedly installed on the sides of the central block, with the embedded bosses embedded in the embedded grooves. A wave-dissipating protrusion is fixedly installed at the top of the central block, and a gravity anchoring protrusion is installed at the bottom. This utility model increases the overall stability of the revetment block structure, improves the anti-slip coefficient of the revetment block structure, and effectively ensures the high porosity wave-dissipating efficiency of the revetment block structure.

The utility model discloses a side core-pulling type shell injection mold which comprises an upper mold, a lower mold, a first hole forming sliding block structure, a second hole forming sliding block structure, a side core-pulling mechanism and a glue injection mechanism, the upper mold is provided with an upper mold core, the bottom of the upper mold core is provided with a first forming surface, the lower mold is provided with a lower mold core, and the top of the lower mold core is provided with a second forming surface; a third forming face is arranged on the side, close to the lower mold core, of the first sliding block, and a through hole forming part is arranged on the third forming face. The side, close to the lower mold core, of the insert is provided with a fourth forming face, the end, close to the insert, of the second sliding block is connected with a core used for forming an inner cavity of a shell, the core penetrates through the insert to be arranged between the upper mold core and the lower mold core, and the side, close to the lower mold core, of the third sliding block is provided with a fifth forming face. The top of the third sliding block is downwards provided with a glue inlet runner exposed out of the fifth forming face. Glue can be fed from the side face of the shell, water gap marks are prevented from being left on the top face of the shell, and the attractiveness of the shell is better.

The utility model discloses a kind of skewing prevention positioning prefabricated block structures for sheep shed wall building construction, comprising: ground;The upper side of the ground is provided with connecting structure, the connecting structure has prefabricated block body, connecting groove, connecting block and partition block combination composition, and prefabricated block body is arranged on the upper side of ground;The side of the prefabricated block body is provided with horizontal connecting mechanism, and the left side of prefabricated block body is provided with connecting groove, and the right side of prefabricated block body is provided with connecting block;The inside of the prefabricated block body is provided with longitudinal connecting mechanism.The skewing prevention positioning prefabricated block structure for sheep shed wall building construction, by connecting groove and connecting block prefabricated block body is spliced together, so as to be built together in horizontal direction, by protruding block and slot prefabricated block body is spliced together, so as to be built together in longitudinal direction, threaded steel can prefabricated block body spliced together in horizontal direction and longitudinal direction be connected together, so as to reach the purpose of preventing skewing.

The utility model discloses a building block structure with self-butt-joint reinforcing bars. At present, in the transformation or reinforcement process of an original structure, the matching mode of a rear embedded steel bar penetrating through the original structure and the interior of a space building block lacks a standard treatment mode. A butt-joint steel bar assembly is arranged in a hollow building block body in a penetrating mode and comprises an externally-connected embedded steel bar, a lap joint and an internally-penetrating steel bar, the internally-penetrating steel bar is arranged in the hollow building block body in the length direction of the hollow building block body in a penetrating mode, one end of the externally-connected embedded steel bar is arranged on an original structure in a penetrating mode, and the other end of the externally-connected embedded steel bar is connected with the lap joint. The other end of the external embedded steel bar is connected with one end of the internal penetrating steel bar through a lap joint; the lap joint comprises a plurality of division bars, the division bars are evenly arranged on the externally-connected embedded steel bar in the outer circumferential direction of the externally-connected embedded steel bar, a clamping groove is defined by every two adjacent division bars and the outer wall of the externally-connected embedded steel bar, and when the butt joint steel bar assembly is in a self-connection state, the internally-penetrating steel bar is connected with the clamping groove close to the internally-penetrating steel bar in a clamped mode.

The application discloses an engine body sand core structure and a body structure made of the sand core; a truss core head structure and an assembling process are adopted, which are characterized by bottom insertion, middle reverse buckling and top pressing. The long and narrow truss core can be accurately and stably fixed on the main body core in a standing state. The long and narrow truss core is accurately and stably assembled on the main body core through the constraint of six directions at three positions, so that the truss core can be turned by 360 degrees with the main body core and does not fall off during long distance circulation.

To provide a blocking structure in which in a partition 1 formed with fitting groove parts 14 in front and rear thereof such that a pair of front and rear panel bodies 2 can be fitted and incorporated to a vertical frame material 7, in a case of employing a monolayer specification in which only one panel body 2 is incorporated, in order to block the fitting groove part 14 to which incorporation is not performed by using a blocking member 23, the blocking member 23 is hidden in the vertical frame material 7 and is invisible in front view.SOLUTION: A blocking piece part 23a of a blocking member 23 for blocking an opening end edge part of a fitting groove part 14 is fitted in a state where the blocking piece part 23a does not project from a distal end edge 14bc of a first groove side piece part 14b, so that the blocking piece part 23a is covered with a first groove side piece part 14b being a width surface and becomes invisible.SELECTED DRAWING: Figure 10

The invention relates to the technical field of part tool clamps, in particular to a barrel-shaped part shockproof tool clamp which comprises a base, a first supporting block, a second supporting block, a first pressing block structure and a second pressing block structure, the bottom end of the first supporting block is fixed to the base, and a first V-shaped notch is formed in the top end of the first supporting block; the bottom end of the second supporting block is fixed to the base, a second V-shaped notch is formed in the top end of the second supporting block, a distance is formed between the first V-shaped notch and the second V-shaped notch, the first V-shaped notch and the second V-shaped notch are oppositely aligned, the first pressing block structure is arranged on the first V-shaped notch in a pressing mode, and the second pressing block structure is arranged on the second V-shaped notch. The shockproof tool clamp for the cylindrical part can stably fix the cylindrical part in an effective space, the shielding area of the cylindrical part is small, machining of the cylindrical part is greatly facilitated, and the shockproof tool clamp for the cylindrical part has the advantage of being low in cost.

The utility model provides a rotatable and lockable small fixed block assembly, including fixed block body, rotating shaft subassembly, locking assembly and accomodation subassembly, wherein fixed block body is equipped with first through hole and second through hole, the first screw of rotating shaft subassembly passes through first through hole and is connected with the receiver to make fixed block body can revolve around it, the second screw of locking assembly passes through second through hole and is used for fixing fixed block body in test machine cabinet, the wave bead lock screw of accomodation subassembly is used for positioning and fixing fixed block body under non - working state. Rotatable and lockable small fixed block assembly realizes flexible rotation adjustment, reliable locking and stable accomodation of fixed block through rotating positioning and fixing system and two - stage fixed mechanism, solves the technical problem of complex fixed block structure, cumbersome operation, lack of flexible position adjustment ability and unable to effectively accomodate fixed under non - working state in prior art, significantly improves compactness of structure, operation convenience and space utilization.