10results about How to "Guaranteed connection stiffness" patented technology

A fixing plate is arranged at the end, close to a movable jaw, of a vice body, the top of the fixing plate is connected with a vice body right guide rail and a vice body left guide rail, the bottom of the fixing plate is connected with a vice body base, the interior of a screw is divided into a hollow front section and a hollow rear section, and the diameter of the front section is smaller than that of the rear section. One end of the screw rod is located in the fixing plate, the other end of the screw rod extends to the other end of the vice body, a threaded ejector rod is arranged in the screw rod, an inclined face pressurization structure is arranged between the threaded ejector rod and the screw rod, and a gear structure used for adjusting the pressurization multiple is arranged between the threaded ejector rod and the screw rod. The jaw vice body adopts a separated design, so that the manufacturing difficulty is greatly reduced; a connecting interface adopts three-key-slot over-positioning, so that the connecting rigidity is ensured; the base is made of cast iron, the guide rail is made of steel, multiple materials are mixed, and higher precision and durability are obtained.

The utility model discloses an automobile back door hinge installation structure which is used for installing a back door hinge of an automobile so as to be connected with a back door of the automobile. The top cover rear cross beam is used for installing a back door hinge, the upper side surrounding plate is used for supporting the top cover rear cross beam, the upper reinforcing plate is arranged between the top cover rear cross beam and the upper side surrounding plate, the hinge reinforcing plate is arranged between the upper side surrounding plate and the upper reinforcing plate, and a first cavity used for reducing noise is formed by the hinge reinforcing plate and the upper side surrounding plate. The utility model further discloses an automobile body structure with the automobile back door hinge mounting structure and an automobile.

The invention discloses a high-temperature-resistant self-adjusting plate heat exchanger. An upper partition plate (2), a middle partition plate A (3), a middle partition plate B (4) and a lower partition plate (5) are sequentially arranged between the two end plates (1) from top to bottom; a heat dissipation core body (6) is arranged between the upper partition plate (2) and the middle partition plate A (3), and a heat dissipation core body (6) is also arranged between the middle partition plate B (4) and the lower partition plate (5); each heat dissipation core body (6) is hooped by more than one hooping assembly (7) arranged along the length direction; the upper U-shaped rib (7.1) is arranged on the upper surface of the upper partition plate (2), the transition beam (7.2) is arranged between the middle partition plate A and the middle partition plate B, the lower U-shaped rib (7.3) is arranged on the lower surface of the lower partition plate (5), and the pull rod (7.4) is used for tensioning the upper U-shaped rib (7.1), the transition beam (7.2) and the lower U-shaped rib (7.3). Deformation compensation of all components under the high-temperature condition can be achieved, on one hand, the product rigidity is improved, and on the other hand, the strength requirement is met.

The invention relates to a large-bend-angle table body connecting structure which comprises a table top plate and at least one table top supporting part. The table top supporting part is of an integrally-formed glass fiber reinforced plastic structure, the outer end face of the upper side of the table top supporting part is connected with the outer end face of the side portion of the table top plate in a matched mode, the outer end face of the upper side of the table top supporting part extends outwards and then is bent to form a bent corner part, and the bent corner part extends downwards in an inclined mode and then is bent and contracted inwards to form a bottom bearing part. The portion, connected with the table top plate in a matched mode, of the table top supporting portion is an upper connecting portion, and the upper connecting portion and the table top plate are connected in an anchoring mode by inserting the inserting anchor beams into the upper connecting portion and the table top plate. The glass fiber reinforced plastic structure is adopted to form the bent or even special-shaped table top supporting part, the table top supporting part is of an integrally-formed structure, the integrity of the overall appearance is guaranteed, the stability of the overall structure is also guaranteed, and then the inserting anchor beams are adopted to be inserted into the table top plate and the upper connecting part of the table top supporting part to be connected. According to the office desk, a new office desk body design scheme is developed through the structure, the large-bending-angle design of the desk top supporting part is achieved, and the connecting strength of the desk top supporting part is guaranteed.

This utility model provides a combined tool holder using an NT50 to Capto C5 converter, comprising an NT50 tool holder, a connecting plate, and a Capto C5 tool holder. The connecting plate has a first inner hole and a second inner hole. One end of the NT50 tool holder is used to simultaneously engage with the inner conical surface and end face of the spindle of a CNC turning and boring machine. The other end of the NT50 tool holder is fixedly connected to the connecting plate by multiple first bolts. The Capto C5 tool holder is fixedly connected to the connecting plate by multiple screws. The Capto C5 tool holder includes a core sleeve, which is inserted into the second inner hole and interference-fitted with it. The inner wall of the core sleeve is triangularly conical, with the edges of the triangularly conical cone evenly distributed circumferentially and forming arcs. A second bolt for fixing the tool is threaded into the second inner hole. This utility model can achieve a tool change time of less than 2 minutes, a tool change repeatability accuracy of less than 0.005 mm, excellent connection rigidity, and can achieve cutting operations with a length-to-diameter ratio of 5, meeting the requirements of cutting operations.

The present invention discloses a drone with multiple protective devices and a control method thereof, and belongs to the technical field of drones. The drone with multiple protective devices includes multiple buffer energy absorption devices, airbag devices and parachute devices. Each connection between a rotor and a fuselage is provided with a buffer energy absorption device. A plurality of buffer energy absorption hollow structures are provided in the buffer energy absorption device. The two ends of the buffer energy absorption device are respectively connected to the rotor and the fuselage. The buffer energy absorption device is configured to deform first when the drone is impacted. The airbag device includes at least one airbag and an inflatable structure. The inflatable structure is configured to inflate the airbag so that the airbag expands and wraps the mission equipment of the drone. The parachute device includes at least one parachute bag and an opening structure. The opening structure is configured as an ejection parachute bag. The present invention adopts a triple protective device of a parachute device, an airbag device and a buffer energy absorption device to provide multi-stage and multi-faceted protection for the drone, and has high safety.

The utility model provides an IIId type concrete sleeper forming steel mould, which comprises a mould base and a forming mould arranged in the mould base, the forming mould comprises a plurality of mould shells arranged in two rows, a positioning support table is arranged between two adjacent sections of mould shells, two rail groove plates are arranged on a bottom plate of each section of mould shell, and the positioning support table and the rail groove plates are arranged on the bottom plate of each section of mould shell. The positioning supporting table is composed of a supporting seat fixed in the formwork and a partition plate which is fixed to the supporting seat and vertically arranged, and the two ends of the supporting seat are fixed to the inner surfaces of side plates of the corresponding formwork respectively. The supporting base is composed of two supporting inclined plates inclining towards the interiors of the corresponding mold shells and a supporting plate fixedly connected to the top faces of the two supporting inclined plates. The positioning supporting table is arranged on the mold shell, so that an iron baffle of the sleeper can be supported, the accuracy of the position of a prestressed steel bar is kept, the quality of the manufactured sleeper is guaranteed, and the concrete sleeper can be conveniently demolded through the supporting inclined plates obliquely arranged on the two sides of the supporting base.

The application provides an engine high-pressure oil pump system, an engine assembly and a vehicle, and relates to the technical field of vehicle structures. The engine high-pressure oil pump system comprises: a high-pressure oil pump inlet pipe, a middle-section connecting oil pipe and a high-pressure oil pump body connected in sequence; and an elastic fuel sensor arranged on the high-pressure oil pump inlet pipe; wherein the elastic fuel sensor is suitable for detecting the ethanol content of fuel in the high-pressure oil pump inlet pipe. The elastic fuel sensor is directly installed at the high-pressure oil pump inlet pipe through integrated design, the length of the oil circuit is shortened, and the detection accuracy is improved.

The application discloses a flexible connection telescopic pin mechanism, and belongs to the technical field of telescopic pin mechanisms. The telescopic pin mechanism comprises a cylinder, a fixed sleeve fixedly installed on a cylinder cover of the cylinder and covering the outside of a piston rod of the cylinder, a guide sleeve fixedly arranged at the top of the fixed sleeve, a telescopic pin body slidably connected to the guide sleeve, and an elastic compensation assembly arranged between the telescopic pin body and the piston rod of the cylinder. The telescopic pin mechanism further comprises a locking structure arranged on the telescopic pin body and connected to the elastic compensation assembly. Through cooperation of the capsule, the through hole, the positioning bead and the inflation assembly, the telescopic pin mechanism can make the capsule expand and extrude the positioning bead after the telescopic pin body is telescopically extended to a position, so that the positioning bead is extended outward and tightly pressed against a counterpart workpiece, locking is realized, the connecting rigidity between the telescopic pin body and the workpiece is ensured, and therefore the stability and reliability of operation are improved.

The utility model discloses a series transmission planetary reducer, which comprises a plurality of planetary gear reducers provided with a rotating shaft and an end shaft, and is characterized in that a square shaft is arranged on one side of the rotating shaft, a square hole is arranged in the end shaft, and when the plurality of planetary gear reducers are connected in series, the square hole is arranged in the square shaft. The square shaft is inserted into the square hole in a sliding mode, a connecting frame assembly is arranged between the planetary gear speed reducers, when the planetary gear speed reducers are independently arranged, the square shaft and the rotating shaft serve as the input ends of the speed reducers, after the rotating shaft drives the driving gear to rotate, the driving gear is meshed with the gear, and then the gear is driven to rotate. The gear rolls on one side of the gear ring, the connecting plate rotates to drive the end shaft to rotate, and the end shaft serves as the output end of the speed reducer.