73results about How to "Solve assembly problems" patented technology

The invention discloses an automobile shock absorber technology, and aims to provide a mistake proofing device for spring plate spiral lift point position height and a control method thereof. The technical scheme is that the mistake proofing device comprises a base used for bearing all mechanisms, a rotating table mechanism is arranged on the base, and a liquid storage barrel placing rod is installed on the rotating table mechanism; an expansion head mechanism for expanding and fixing the liquid storage cylinder is arranged at the top of the placing rod; the pressing mechanism is arranged on the rear side of the base and used for pressing and fixing the spring plate; the positioning mechanism is arranged on the base and used for positioning and supporting the spring plate; the detection mechanism is arranged at the bottom of the positioning mechanism and used for precise detection; the control system is connected with all the mechanisms through a PLC and used for controlling all the mechanisms; the control system can also remotely control the welding robot to facilitate subsequent welding work; through a plurality of components such as the base, the pressing mechanism and the positioning mechanism, the accuracy of the mounting, pressing, positioning and detecting processes is ensured; the invention is suitable for the technical field of automobile shock absorbers.

The utility model discloses a charging pile assembly line, which belongs to the field of charging pile assembly, and is characterized in that a ground rail is mounted on the ground, an electric rail is mounted in the middle of the ground rail, an AGV (automatic guided vehicle) is mounted on the ground rail and the electric rail in a sliding manner, the AGV comprises a frame and wheels, and the wheels are mounted on the frame. The wheels are attached to the upper surface of the ground rail, feeding ports are formed in the two ends of the ground rail, feeding devices are installed at the feeding ports, a plurality of material storage tables are installed on the left side and the right side of the ground rail, an assembling station is arranged between every two adjacent material storage tables, and control buttons are arranged on the assembling stations. And a conveying assembly is mounted on the material storage table. The automatic assembling machine has the effects of conveniently transporting and assembling articles and improving the working efficiency.

The invention relates to the technical field of drivers, and provides a reciprocating driver and system.The reciprocating driver comprises a driver shell, a first output shaft, a first permanent magnet, a magnetoelectric sensor and two sets of electromagnetic coils, and the interior of the driver shell is provided with a motion space and shaft holes which communicate with the motion space and are formed in the two sides of the motion space; the first output shaft is a magnetic conductive material body, is arranged in the shaft hole and penetrates through the motion space; the first permanent magnet is arranged in the motion space and assembled on the first output shaft; the magnetoelectric sensor is used for detecting the displacement and / or position of the first output shaft; reciprocating driving of the small-size slender driver is achieved through cooperation of the electromagnetic sensor, the one or more permanent magnets and the two electromagnetic coils, the harsh machining precision requirement of parts is lowered, the assembling and integrating difficulty is lowered, the magnetic material requirement is lowered, the cost is lowered, and the manufacturing cost is lowered. The assembly and design problems of the small-size slender reciprocating driver are solved, and the practicability is high.

The invention discloses an aero-engine rotor hoisting device and hoisting method, and belongs to the technical field of aero-engine assembly.The aero-engine rotor hoisting device comprises clamping jaws, a limiting ring, a mounting plate, a cover plate, a lifting bolt and a hanging assembly; the mounting plate is used for movably sleeving the outer ring of the limiting ring and pressing and limiting the clamping jaw on the outer side of the limiting ring, the locking piece sequentially penetrates through the mounting plate and the cover plate to connect and fasten the mounting plate and the cover plate, and then the top of the clamping jaw is pressed and limited between the mounting plate and the cover plate; a plurality of hoisting screw holes are formed in the mounting plate in an annular array mode, and the hanging assembly is used for being connected with a crane. The problem that the turbine rotor assembly is difficult to hoist in the unit body assembling process can be solved, meanwhile, the rotor assembly can be prevented from falling in the hoisting process, and the assembling efficiency of the turbine rotor assembly in the unit body assembling process is improved.

The invention discloses a reverse planet roller screw rod based on an integral planet carrier. The reverse planetary roller screw rod comprises a long nut, a screw rod shaft, a roller, an integral planet carrier and a sliding bearing assembly, the integral planet carrier designs a traditional left-side split planet carrier and a traditional right-side split planet carrier into an integral structure, and therefore the phenomenon that the left side and the right side of an original split structure are tiny and asynchronous due to a gear transmission gap is avoided. The integral planet carrier is provided with the rollers, so that the rollers are uniformly borne, the transmission stability and reliability are improved, meanwhile, the sliding bearings are additionally arranged between the integral planet carrier and the rollers and between the integral planet carrier and the lead screw shaft, friction is reduced, and the transmission efficiency is improved.

The invention relates to the technical field of building board assembly, in particular to a linkage type assembly structure based on assembly type building boards, which comprises a base, the top of the base is slidably connected with two first electric sliding seats and a second electric sliding seat, the tops of the first electric sliding seats are fixedly connected with a plurality of groups of brackets, and transmission shafts are arranged between the corresponding brackets; the two ends of the transmission shaft are movably connected with the side wall of the support through bearings, the circumferential outer side of the transmission shaft is fixedly connected with a limiting sleeve in a sleeving mode, the outer side of the limiting sleeve is slidably connected with a sliding sleeve, the outer side of the sliding sleeve is fixedly connected with a supporting plate, multiple sets of positioning holes are formed in the outer side of the supporting plate in a penetrating mode, and a plate fixing assembly is arranged on the outer side of the supporting plate. Compared with the prior art, through pre-calibration and related structure cooperation, further calibration of the building template side plate and the building template bottom plate is achieved, screw holes are made to be in precise through butt joint, the splicing problem is solved, the precision efficiency is improved, and the quality problem and construction delay are reduced.

The invention discloses an industrial instrument main body assembling auxiliary device, and belongs to the technical field of instrument assembling appliances, the industrial instrument main body assembling auxiliary device comprises a workbench, an air pump control box is arranged on one side of the bottom of the workbench, a fixing plate is arranged in the middle of the top of the workbench, a supporting ring is arranged on the top of the fixing plate, and a placing plate is arranged on the supporting ring; only a plurality of fixed air taps are uniformly arranged on the top of the placing plate, connecting pipes are arranged between the bottoms of the fixed air taps and the air pump control box, a supporting block is arranged at the bottom of the placing plate, a movable column is arranged on the top of the fixed plate, a transmission plate is arranged at one end of the bottom of the movable column, and a connecting column is arranged at one end of the transmission plate; a clamping plate is arranged at the end of the connecting column. Through cooperative use of the placing plate, the fixing transverse plate and other parts, the outer shell of the instrument and apparatus can be conveniently fixed, a mainboard and a display panel are installed, and the assembling convenience is improved.

This invention provides a real-time detection system for a one-way actuator intelligent assembly system. The one-way actuator intelligent assembly system includes an automatic assembly line for a star wheel and output shaft, and an automatic assembly line for a spring seat and snap ring seat. The detection system includes an assembly-time detection device and a post-assembly detection device. The assembly-time detection device is located on the automatic assembly line for the star wheel and output shaft, and the post-assembly detection device is located after the automatic assembly line for the spring seat and snap ring seat. This invention solves the problem of one-way actuators only being inspected after assembly, which leads to defects in early components or assembly issues. It allows for timely detection of any problems in one-way actuator assembly.

The present invention provides a fatigue test fixture for typical angle connectors of bulkheads and a method of use, which is particularly suitable for L-shaped connectors with design requirements for special cross-sections. The fixture includes a fixed box body, a side plate, a lever and a loading mechanism, wherein the fixed box body and the lever are vertically connected; the fixed box body is fixedly connected with a horizontal part and a side plate of the angle connector from bottom to top, and the side plate is fixedly connected to the horizontal part of the angle connector; the lever is provided with a groove, and the vertical part of the angle connector is fixed in the groove; the loading mechanism includes an upper loading component and a lower loading component, wherein the upper loading component is rotationally connected to the fixed box body, and the lower loading component is rotationally connected to the lever. During the loading process, the loading component connected to the angle connector will move with the displacement of the chuck of the testing machine, thereby correctly simulating the actual stress state of the angle connector. Its structural design is reasonable and the clamping is convenient, ensuring that the fatigue test of the connector with special design requirements for the loaded part is carried out smoothly.

The utility model provides an electronic atomizer which comprises an upper shell, a lower shell and a base, an atomizing assembly is arranged in the upper shell, the lower shell is used for installing a battery, one end of the lower shell is detachably connected with the base, the other end of the lower shell is detachably connected with the upper shell, a circuit board and an air inlet channel are arranged on the base, and the air inlet channel is communicated with the circuit board. One end of the air inlet channel is communicated with an air inlet of the atomization assembly through the interior of the lower shell, and the other end of the air inlet channel is communicated with the outside. According to the utility model, the lower shell and the upper shell as well as the lower shell and the base are detachably mounted, so that the lower shell and the battery which are adaptive to each other can be replaced according to actual requirements, and the problem that the assembly of batteries with different sizes or models cannot be realized in the prior art is solved.

The utility model discloses a caster capable of quickly stretching and retracting and enhancing a supporting effect and a box group, which relate to the technical field of moving parts and are characterized in that the caster comprises a fixed plate, a sliding groove is formed in the middle of the fixed plate, and a hinge shaft is arranged in the sliding groove in a sliding manner; two symmetrically-arranged supporting feet are hinged to the hinge shaft, and wheels are arranged at the ends, away from the hinge shaft, of the supporting feet respectively. On the premise of rapid carrying and moving, the product stability is enhanced, the problem that the supporting legs of the product are tedious to assemble or unfold is solved, the supporting legs stretch out and retract rapidly, one supporting leg is pulled to stretch out automatically, and the horizontal torque and the inclination resistance of the product are increased after the supporting legs are pulled out; the casters are universal wheels, retraction and pull-out of the supporting feet do not affect movement of the product, and the product can be reliably fixed to the current position through a locking structure with a braking vane.

The utility model relates to a connecting rod testing fixture, which comprises a base, a large head detection sleeve is arranged on the base, the vertical section of an inner hole of the large head detection sleeve is circular, a connecting rod small end fixing part is further arranged at the top of the base, the connecting rod small end fixing part is in sliding connection with the base, and the connecting rod small end fixing part comprises a connecting rod positioning column. The connecting rod positioning column is located above the base, and the position height of the central point of one end of the connecting rod positioning column is equal to the position height of the central point of the inner hole of the large-head detection sleeve. The utility model relates to the technical field of connecting rod detection equipment. The device has the effects of detecting whether the large-head end of the connecting rod can smoothly enter the large-head detection sleeve, and avoiding the problem that the finished connecting rod interferes with a cylinder sleeve and affects assembly.

The invention discloses an automatic inner and outer basket separating and assembling mechanism and a using method. The bottom of an outer basket is in a rectangular grid shape, a plurality of supporting rods are arranged in an opening in a working table face in an array mode, and the supporting faces of all the adjacent supporting rods are arranged at intervals and located on the same horizontal plane to form a supporting stress face of the inner basket; the outer basket can move up and down in latticed gaps formed by all the supporting rods and the opening, the air cylinders are arranged in the centers of the supporting rods, the piston rods are arranged upwards, a top plate is fixed to the top ends of the piston rods, the length and the width of the top plate are larger than those of the latticed center of the bottom of the outer basket, and a supporting stress face of the outer basket is formed. When the piston rod retracts downwards, the outer basket sinks to the position below a working table under the action of self-gravity, the bottom of the inner basket is an overall plane, the supporting rods can support the inner basket to keep a static state, and after the outer basket moves downwards, the supporting rods can stay on the supporting rods, so that automatic separation of the inner basket and the outer basket is achieved. During assembly, the outer basket moves upwards under the action of the top plate, the bottom of the outer basket can support the bottom of the inner basket, automatic assembly of the inner basket and the outer basket is achieved, and the problems of separation and assembly of the inner basket and the outer basket needed by an automatic line and a single station are solved.

The invention relates to the technical field of mechanical assembly, in particular to a disassembling and assembling tool for equipment wheels. A hanging ring; the four lifting beams are arranged in the front direction, the rear direction, the left direction and the right direction of the middle connecting plate, and each lifting beam is provided with a round through hole, a nut and a square through hole; each limiting push rod comprises a sleeve, a sleeve head and a rod, a thread is arranged at one end of the rod, a buckle is arranged at the other end of the rod, the end, with the thread, of the rod penetrates through the sleeve to be matched with the sleeve head, and the buckle of the rod is locked with a rim of the wheel; and the four welding push rods are arranged on the four lifting beams and used for separating the tire from the rim. The tool provided by the invention is novel in structure, convenient to use, easy to mount, compact in structure and low in cost, and solves the problem of assembling or replacing the tire clamping ring.

The utility model provides a kind of sewing machine electric lifting presser foot mechanism, belong to sewing machine technical field.It includes presser foot assembly and with the drive assembly of presser foot assembly through presser foot piece driving part connection, the drive assembly includes the electric drive of the driving shaft with the ability of output circumferential power, the vertical output shaft of being connected with the presser foot piece driving part far from presser foot assembly one end and the split cam structure of connecting the driving shaft and vertical output shaft.The utility model connects driving shaft and vertical output shaft by using split cam structure, optimizes the structural design of lifting presser foot mechanism, solves the problem of traditional cam structure assembly and disassembly difficulty, improves the assembly efficiency and maintenance convenience of mechanism.

The invention discloses an automatic assembly device for a PTC heater, and belongs to the technical field of assembly processing, the automatic assembly device comprises a conveying assembly for conveying the PTC heater, and further comprises an assembly rack for assembling upper supports at the two ends of the PTC heater; the positioning assembly is used for positioning the PTC heater, and the positioning assembly is installed at the top of the assembling machine frame; the electric inspection assembly is used for inspecting the PTC heater, and the electric inspection assembly is arranged below the positioning assembly; the electric testing assembly is driven to be coupled with the PTC heater during positioning through the positioning assembly; the electrical inspection assembly is expelled from the PTC heater when the bracket is assembled by assembling the bracket. The device integrates the functions of conveying, positioning, assembling and electric inspection on the same station, does not need to transfer, improves the production efficiency, is accurate in positioning, stable in detection and reliable in protection, effectively avoids product damage, overcomes the defect of separation of assembling and detection, and is suitable for batch production.

The present invention relates to the field of measurement technology, and specifically to a construction inspection device, comprising: a mobile vehicle; a conveying component, the conveying component is used to drive the pipe to move and rotate; an outer wall measurement component, the outer wall measurement component is used to detect the deformation degree and diameter of the outer wall of the pipe. The present invention drives the marking head to contact the inner wall of the pipe when the detection head moves in the inner wall of the pipe, and when there is a protrusion in the pipe, it will contact the marking head, and make the marking head slide inside the fixed box, so that the flow groove and the liquid outlet groove are connected, and the pigment flows out from the end of the marking head through the liquid outlet groove to be smeared on the protrusion for marking, and the telescopic screw is driven backward from the inner wall of the pipe by the reverse driving of the second driving source. During the retreat process, the lighting lamp will illuminate the inner wall of the pipe, and the color sensor will detect the pigment at the mark and alarm, so as to determine whether there are depressions and protrusions on the inner wall of the pipe.

The present invention discloses a prefabricated beam-column component for assembling a prefabricated lightweight lattice wall and a construction method thereof, and relates to the technical field of construction engineering, and specifically to a prefabricated beam-column component suitable for assembling a prefabricated lightweight lattice wall and a construction method thereof. The characteristics are as follows: the prefabricated beam-column component is composed of a hollow porous prefabricated column, a porous composite beam and a lattice wall; the hollow porous prefabricated column is a porous prefabricated column with upper and lower through holes in the center and evenly spaced side edges; the porous composite beam is a porous crossbeam evenly spaced in the vertical direction; the lattice wall is a component formed of a lightweight material or concrete in a lattice shape with evenly spaced horizontal and vertical edges, and the raised part of the side edge is an evenly arranged lattice; the multi-holes on the side of the hollow porous prefabricated column and the multi-holes in the vertical direction of the porous composite beam match the lattice on the side of the lattice wall. The purpose of the present invention is to solve the problems of unreasonable component design and many difficulties in construction in the past.

The present application belongs to the technical field of cooking equipment, and particularly relates to a cooking device. The cooking device comprises a cavity, a bottom plate assembly and an interlocking assembly. The bottom plate assembly comprises a bottom plate body, which is arranged below the cavity and is spaced apart from the cavity. The interlocking assembly is connected with the bottom plate body and is arranged between the cavity and the bottom plate body. According to the cooking device, the interlocking assembly is arranged between the cavity and the bottom plate body and is connected with the bottom plate body. When assembling, the interlocking assembly and the bottom plate body are first connected into a whole, and then are installed at the bottom of the cavity. Therefore, the interlocking assembly is convenient to assemble and convenient to wire. In addition, the interlocking assembly is arranged at the bottom of the cavity, so that the interlocking assembly does not occupy the side space of the cavity, thereby further expanding the volume of the cavity and improving the heating efficiency of the cooking device.

The utility model discloses a slope skirting line and an assembly type skirting line system. The slope skirting line comprises a base and a face cover which are installed on a wall. The surface cover is clamped and connected with the base to cover a gap at the junction of the wall body and the ground; the upper end of the surface cover abuts against the wall body; the inner surface of the face cover and / or the base transversely extends to be provided with a first slope supporting strip and a second slope supporting strip which are used for limiting the distance between the face cover and the base so that the outer surface of the face cover and the wall can form an inclined angle. The length of the second inclined plane supporting strip is greater than that of the first inclined plane supporting strip; by improving the structure of the skirting line, the first inclined plane supporting strip and the second inclined plane supporting strip with the length difference can be selectively arranged on the inner surface of the surface cover and / or the base, so that the outer surface of the surface cover and the wall body form an inclined angle; the flat and straight surface cover body is matched with the arc-shaped extension edge which is bent upwards, and different parts of the outer arc edge of the arc-shaped extension edge abut against the wall body, so that the surface cover body and the wall body can form inclined angles with different sizes.

The present invention discloses an assembly machine for a dry friction self-adjusting cover assembly force sensor DS for automobiles, which relates to the field of automobile parts assembly, including a frame, on which a table is fixedly mounted, and an upper fixed plate and a lower fixed plate are fixedly mounted on the table; a tooling, which is mounted on the table, used to place the assembled parts, and is covered with a pressure plate; a linear drive mechanism, which is fixedly mounted on the lower fixed plate, used to drive the assembled parts to move linearly; a rotary drive mechanism, which is fixedly mounted on the upper fixed plate, one end of which is fixed to the tooling, and the other end is connected to the linear drive mechanism, used to drive the assembled parts to rotate; and an electric control box, which is mounted on one side of the frame to control the linear drive mechanism and the rotary drive mechanism. The beneficial effects of the present invention are: solving the assembly problem of the self-adjusting diaphragm spring clutch cover assembly; during the assembly process, defective assembled parts can be eliminated by monitoring the tension and displacement; the structure is simple and novel, automatic control is realized, and the operation is convenient.

The invention discloses a composition for miRNA detection based on an infinite zipper hybridization chain reaction (ZHCR), a fluorescent biosensor as well as a construction method and application of the fluorescent biosensor. According to the invention, HCR and PER are combined, a single-stranded DNA product generated by PER is used as a track for fixing hairpins, and ZH1 and ZH2 are generated by respectively reacting and combining with legged hairpins H1-l and H2-l of HCR; a target recognition unit is further designed according to the miRNA sequence, after the target miRNA is combined with the target recognition unit, a closed chain falls off, an initiation sequence is exposed, ZH2 and ZH1 are initiated to generate ZHCR, and a fluorescence signal is generated. The preparation of the reaction substrate and the sequence design are simple, and the free hairpin can be positioned on a long track, so that the reaction rate is improved, isothermal, rapid and sensitive amplification of miRNA in vitro is realized, and a new platform with a prospect can be provided for efficient imaging and in-vitro detection of miRNA in living cells.

The utility model discloses a lower plastic cement and a cover plate assembly having the same, the lower plastic cement comprises a lower plastic cement body and an elastic connecting portion, the lower plastic cement body is provided with two post terminal through holes arranged at intervals, the two post terminal through holes are respectively arranged at two ends of the lower plastic cement body in the length direction, and the elastic connecting portion is arranged on the lower plastic cement body. A notch is formed in the edge of at least one end of the lower plastic body in the length direction; and the elastic connecting part is arranged at the notch and is connected with the two side edges of the notch in the width direction of the lower plastic body. According to the lower plastic cement provided by the embodiment of the utility model, the elastic connecting part is arranged, so that the deformation such as shrinkage, distortion and warping of the lower plastic cement can be automatically adjusted and compensated, the acting force of the lower plastic cement on the pole columns when the cover plate assembly is assembled can be reduced, and the deviation of the first pole column and the second pole column caused by the deformation of the lower plastic cement is avoided; deformation caused by the fact that the sealing ring compresses the lower plastic body near the post terminal after the cover plate is assembled can be absorbed, and the assembling problem of the lower plastic is avoided.

This utility model discloses a quick assembly device for male-female mating connector tools. Its features include a base plate with a left clamping mechanism, a right clamping mechanism, and a limiting block. The left clamping mechanism on the base plate has a left support frame with a V-shaped positioning block and a toothed block. The right clamping mechanism on the base plate has a right support frame connected to the base plate via a guide rail. The guide rail has a guide rail groove, and the right support frame is locked to the guide rail groove and the base plate with screws. A pressure block is provided on the right support frame. This device has a simple structure, is easy to operate, economical, provides accurate positioning, is safe and reliable, and is convenient and quick to transfer. It is a portable assembly fixture suitable for various applications. It solves the company's safe assembly problem, improves assembly efficiency, and speeds up product delivery.

The invention relates to the technical field of optical fiber cable terminal carrier tape storage devices, in particular to a novel optical fiber cable terminal carrier tape winding disc which comprises a first winding disc and a second winding disc which are connected to the two ends of an optical fiber cable shaft core correspondingly, and multiple sets of magnetic attraction assemblies are arranged at the two ends of the optical fiber cable shaft core; and a plurality of groups of mounting hole positions are formed in the peripheries of the side surfaces of the first reel and the second reel, and are perpendicular to the plurality of groups of magnetic attraction assemblies. On one hand, the problem that an existing optical fiber cable terminal carrier tape winding disc is not easy to disassemble and assemble quickly and accurately is solved, on the other hand, the problem that long-time storage of an optical fiber cable terminal carrier tape is affected by weather and humidity is solved, and the service life of the equipment is prolonged. The device is beneficial to quick and convenient disassembly and assembly, is not limited by a working environment and a site, and effectively prevents the quality of an optical fiber cable terminal carrier tape from being affected by a humid environment.

The utility model provides a battery cell and a battery pack, the structure of the battery cell comprises a pole group, and a positive tab and a negative tab are respectively arranged at two ends of the pole group in the length direction; the upper end plate is mounted at the end part of the pole group in the length direction, and the upper end plate is positioned at the upper parts of the positive tab and the negative tab; and a lower end plate installed at an end portion of the pole group in a length direction, the lower end plate being located at a lower portion of the positive tab and the negative tab. The battery cell and the battery pack can solve the problem that the battery cells need to be assembled when the battery pack is produced.

The invention provides a granulation material for glass sealing, a preparation process and application, and belongs to the technical field of packaging materials of batteries and semiconductor products. The preparation method comprises the following steps: adding the surfactant, the binder, the plasticizer and the release agent into the glass powder, uniformly stirring, kneading or banburying and mixing at 50-150 DEG C, and cooling to room temperature under the stirring, kneading or banburying condition, so as to obtain the smooth elastic granulation material with good fluidity. A green body pressed by the granulation material is complete in structure and compact and uniform in texture, has certain elasticity, flexibility and tensile strength, can be directly assembled to a to-be-sealed position without pre-sintering, solves the problem of assembly errors, omits a pre-sintering step, greatly improves the material utilization rate, simplifies the sealing process, improves the production efficiency, and is suitable for large-scale production. And the production cost is reduced. The granulation material can be used for connection and sealing between ceramic-ceramic materials and between ceramic-metal materials, and is wide in application and wide in raw material source.

The invention discloses a steel plate assembled mud pool, which comprises two side plates and two end plates, each end plate comprises a first unit plate, each side plate comprises at least two second unit plates; each unit plate comprises a steel panel and a top beam, a bottom beam and two columns welded on the inner surface of the steel panel, each column is a vertical channel steel with an opening facing inward, and the two ends of the two beams are respectively welded to the two columns; each column of each first unit plate is screwed to the column on the side of the adjacent second unit plate through a vertical angle steel; the non-side column of each second unit plate is screwed to the column on the adjacent side of the adjacent second unit plate through a vertical T-shaped steel steel vertical plate; two upper and lower tie beams are welded between the steel horizontal plate of each T-shaped steel and the steel horizontal plate of a T-shaped steel directly facing the opposite side plate; the mud pool also comprises a concrete bottom plate cast on the ground. The mud pool is simple and convenient to transport, assemble and disassemble.

The utility model discloses a municipal road foundation pit safety protection device which comprises a foundation pit protective fence body, an extending assembly capable of extending the length of a foundation pit protective fence is arranged on the inner wall of the foundation pit protective fence body, and a supporting assembly used for supporting the foundation pit protective fence body is arranged on the side, close to a foundation pit, of the foundation pit protective fence body. The foundation pit protective fence relates to the technical field of municipal engineering and is provided with the supporting assembly, the supporting assembly is connected with the bottom plate through the sliding rod and the mounting sleeve, so that the distance between the bottom plate and the foundation pit protective fence body can be adjusted, and the sliding rod, the mounting sleeve and the bottom plate can play a role in supporting the foundation pit protective fence body; the base plate is matched with the second fixing rods, so that the foundation pit protective fence body is more stable in installation, the fence body is not prone to being collided when being collided, a braking system effect is generated on a non-motor vehicle to a certain degree, and the protection effect is good.