30results about How to "Easy to go down" patented technology

The invention discloses an underground fluid laminated sampling device based on a U-shaped pipe technology. The underground fluid laminated sampling device comprises an underground fluid sample injection subsystem, a packer subsystem, a chaining subsystem, a ground sampling subsystem and a soil gas sampling subsystem, wherein the underground fluid sample injection subsystem comprises a driving pipe, a sample discharging pipe, a fluid storage container, a liquid phase check valve and a filtering element; the soil gas sampling subsystem comprises a gas phase check valve arranged at a set position; the gas phase check valve is connected with a manual pump through a pneumatic ball valve and a gas sampling bag. The invention further discloses an underground fluid laminated sampling method based on the U-shaped pipe technology. The underground fluid laminated sampling device is novel in structural design; multiple technical difficulties are overcome; compared with a product of the original technology, the underground fluid laminated sampling device has the advantages that the working performance, the application range and the system stability are greatly improved, has higher competitiveness and industrial leading superiority, can be widely applied, is good in engineering demand, and has good application prospect and commercial value.

The invention relates to a heat-resistant gas injection multi-parameter logger, comprising a logging framework, a flow measurement short section, a temperature measurement short section and a pressure measurement short section, wherein the flow measurement short section, the temperature measurement short section and the pressure measurement short section are arranged on the logging framework from top to bottom. The heat-resistant gas injection multi-parameter logger further comprises a thermal-insulating cylinder body arranged outside the logging framework; and the pressure measurement short section is arranged inside the thermal-insulating cylinder body. The invention provides the heat-resistant gas injection multi-parameter logger, which has heat resistance and can obtain a plurality of groups of logging parameters.

The invention provides a flexible hinge beam fiber Bragg grating two-dimensional acceleration sensor. One side of the base is provided with a support base which is connected to a cylindrical flexible hinge beam by using a screw. A measurement groove is processed in the circumferential direction of the flexible hinge beam, and the depth of the measurement groove is smaller than the radius of the flexible hinge beam. Two fiber mounting grooves are processed along the axial direction at the outer surface of the flexible hinge beam. The angle between the sections where two fiber mounting groove center lines are located is 90 degrees. Fiber Bragg gratings are bonded in the fiber mounting grooves by using glue, and the grating parts of the fiber Bragg gratings are above the measurement groove. The flexible hinge beam fiber Bragg grating two-dimensional acceleration sensor of the invention has the advantages of high temperature resistance, a simple structure, easy manufacture, a small size and easy going down and can be used in the fields of downhole seismic wave exploration and micro-seismic monitoring technology.

The invention relates to a casing deformation oil-water well repair technics. The sand-washing technology and the anti-sand technics with a gravel-filled string are adopted by the invention. Sand is first washed to a preset position with a specially made sand-washing tool, and then the anti-sand string is put into the well. A certain amount of quartz sand is filled outside the string to complete the well. Thus, a well bore hole is reinforced and an oil flow or water injection passage is formed, so as to reach the purpose of production recovery for an oil well and water injection recovery for a water injection well. The casing deformation oil-water well repair technics provided by the invention avoids the overhaul procedure. The sand prevention work can be directly carried out, the well repair cost is reduced, and the construction period is shortened. Moreover, when the sand is effectively prevented, the intention is provided with a certain channelizing effect for an oil layer, which is favorable for increasing the oil well output or the water injection amount of the water injection well.

The invention discloses a vehicular obstacle-free guide device, comprising a power mechanism, a guide mechanism, a lane plate bearing mechanism, a mounting support and a guide rail mechanism. The power mechanism includes a motor and a linear transmission mechanism connected with the power output end of the motor; the guide mechanism includes an upper plate, a lower plate and a rest plate; the guide mechanism acts as a vehicular chassis auxiliary structure mounted in a vehicular chassis below a vehicular floor. The upper plate and the rest plate are of special structural design; retracting canbe achieved with movement of the lower plate at the premise that the power mechanism provides reverse power drive; the whole mechanism can be folded in the vehicular chassis below the vehicular floorwhen idle; when the device herein is required, the guide mechanism is unfolded under forward power drive of the power mechanism, and the upper plate, the lower plate and the rest plate can be jointedto form a passage, allowing a wheelchair to go up or down.

The invention discloses a full-automatic elevator facilitating workers to get on and off, with advantages of high safety, efficiency and stability performance. The full-automatic elevator comprises anelevator body; according to the elevator, the workers can quickly get on an elevator platform through a pedestrian ladder, so that the workers do not need to climb; and the workers can also get off the elevator platform conveniently, and risks occurred due to climbing are reduced; guardrails on both sides can be used for not only protecting the workers but also stacking cargoes, and the area of aworking range is increased; the full- automatic expansion and contraction are achieved, and manpower and time are saved; shock absorption is achieved through a damping device, and the working platform is kept stable in the lifting process of the elevator, so that the health safety of the workers is protected; the cargoes are prevented from falling due to vibration, so that damage to the cargoes and injury to the workers are avoided; the workers standing on the platform can move at will, and do not need to get off the elevator for pushing; the operation is convenient, and the manpower is saved; the convenience is provided for people; and a large portable movable power source facilitates outdoor work, and the flexibility is high.

The invention discloses an intelligent throttling system and a method for a gas well, and belongs to the field of development and gas production of the gas well. The intelligent throttling system comprises a first pressure sensor, a controller, an adjusting device, and a production valve, wherein the production valve is arranged at a wellhead of the gas well. The first pressure sensor, the controller and the adjusting device are electrically connected in sequence, and lowered into the upper portion of an inner producing layer of the gas well along with a production pipe string. The productionvalve is used to produce a pressure signal with a preset range of variation at the wellhead of the gas well. The first pressure sensor is used to receive the pressure signal and transmit the pressuresignal to the controller. The controller is used to receive and process the pressure signal and obtain the corresponding production adjustment instruction. The regulating device is used to regulate agas production rate of the gas well according to the production adjustment instruction. The specific pressure signal is produced at the wellhead by the production valve, so that the intelligent throttling can be realized by using the adjusting device to control the gas production capacity of the gas well under the control of the controller. The intelligent throttling system and the method for thegas well are simple in operation and convenient to implement, and are facilitate to go down to the well.

The main explosive as main part of the seismic source explosive column comprises TNT, ammonium nitrate, wood powder and organic or inorganic surfactant in the weight ratio of 25-40 to 60-70 to 0-5 to 0-2. The organic or inorganic surfactant is the mixture of paraffin, fluoric surfactant and graphite in any proportion, and the fluoric surfactant is CnF(2n+1)COOM, where n is 8-13 and M is Li ion, Na ion, ammonium ion or H ion. The production process of the main explosive is to mix the said materials and plastify inside one open-mouthed plastic pot at 81-90 deg.c for 10-25 min. The product of the present invention has high explosion speed not lower than 5000 m / s and density not lower than 1.40 g / cu cm, and can meet the requirement of seismic exploitation under different conditions.

The invention relates to the technical field of abandon flow wells, and discloses a novel integrated intelligent flow abandoning well used for collecting sewage and rainwater. The well comprises a well body, and the well body comprises a cleaning pond and a treatment pond. According to the novel integrated intelligent flow abandoning well used for collecting the sewage and the rainwater, when therainwater passes through a filter cover at the initial stage, leaves are filtered out preliminarily, the rainwater flows into the treatment pond, due to the small initial-stage rainwater amount, the rainwater in the treatment pond is not much, the rainwater at the initial stage is drained through a water draining pipe, the phenomenon that the seriously-polluted rainwater at the initial stage enters a filter chamber is avoided, after the rainwater amount becomes large, multiple layers of filter sand in the filter chamber are subjected to layer-by-layer filtering, the sand enters a reverse osmosis box through a transition pipe, through superfine filter sand in the reverse osmosis box, the rainwater carries out osmosis from bottom to top, and then enters a disinfection box, the rainwater is disinfected again through white alum in the disinfection box, and the water enters a water purifying chamber from a water purifying channel. Purification treatment of the rainwater and the sewage can be achieved, and subsequent water by people can be facilitated.

The invention discloses a novel combined frequency conversion and speed reduction all-in-one machine, and relates to the field of frequency conversion and speed reduction all-in-one machines. The novel combined frequency conversion and speed reduction all-in-one machine comprises a motor, and a speed reducer is arranged on the outer surface of one end of the motor. According to the novel combined type frequency conversion and speed reduction all-in-one machine, a speed reduction motor module and a frequency converter can be independently installed and are connected through a high-voltage cable, and the relative position and path of the speed reduction motor module and the frequency converter are not limited; the frequency converter can serve as an independent module, is directly connected to a flange face connecting disc of the speed reducer through bolts, and through a flange of the frequency converter, can also be connected to other devices near the motor, so that the overall combination is flexible; the frequency converter is detachable, the installation position is flexible, and the frequency converter can be installed on a motor connecting disc or the position near the motor according to the actual matching situation, so that the operation is convenient, and the occupied space is small. The novel combined frequency conversion and speed reduction all-in-one machine is more suitable for the underground narrow space, the matching performance is greatly improved, and the underground transportation and arrangement are convenient. The overall structure of the novel combined frequency conversion and speed reduction all-in-one machine is simple and compact, the novel combined frequency conversion and speed reduction all-in-one machine is convenient for the underground transportation and maintenance, and the manufacturing and maintenance cost is low.

The invention relates to the technical field of oil-gas well drilling, well completion, well cementation or well logging, in particular to an oil-gas well pneumatic expansion packer which comprises acentral pipe, an expansion pipe, an upper sleeve, a lower sleeve and a setting valve. The expansion pipe sleeves the central pipe, two ends of the expansion pipe are fixedly connected with the upper sleeve and the lower sleeve respectively, and two ends of the central pipe are fixedly connected with the upper sleeve and the lower sleeve respectively; the expansion pipe comprises a framework, an inner layer and an outer layer, and the framework is made of a metal material. The framework made of metal enables the expansion pipe to be higher in rigidity, less prone to deforming expansion and higher in needed deforming expansion pressure, so that jamming in the process of going down to a well is reduced, and the packer is easier in going down to the well.

The invention discloses a downhole casing external optical cable orientation locking perforation monitoring device, which comprises a cable joint, a rotary short section, a magnetic positioning short section, an anchoring instrument and an orientation locking instrument, and is characterized in that the cable joint, the rotary short section, the magnetic positioning short section, the anchoring instrument and the orientation locking instrument are sequentially connected; a perforating gun is arranged at the tail end of the orientation locking instrument; wherein power mechanisms are arranged in the anchoring instrument and the direction locking instrument. The rotation is driven by power supply, so that the supporting arm of the anchoring instrument is driven to open, and the instrument string is anchored on the sleeve without moving and rotating. And a motor in the orientation locking instrument rotates to drive the lower optical cable detection device to rotate, and the position of the optical cable is judged by transmitting and receiving electromagnetic wave signals, so that the perforation position in the opposite direction is determined.

The invention discloses a heading machine motor box body and a heading machine. The heading machine motor box body comprises a main box body; the number of the side box bodies is at least one, and the side box bodies are arranged on the outer box wall face of the main box body; the side box body and the main box body are detachably connected. The motor box body is divided into the main box body and the side box body, the main box body and the side box body are detachably connected, the motor box body of a split structure is adopted, well descending, transportation and installation of the motor box body are more convenient, and the applicability of the heading machine to a narrow roadway is improved; and meanwhile, the motor box body adopts a left-right split structure, so that the integrity of the motor box body can be ensured in appearance, and the appearance effect of the motor box body is improved.

The invention relates to a fire-fighting escape and rescue system for a high-rise building. The fire-fighting escape and rescue system for the high-rise building comprises a fire-fighting room arranged on each floor of the high-rise building, each fire-fighting room comprises a closed gate, a cableway, and a ground channel; the ground channel is arranged on the ground of the fire-fighting room, and the ground channel of each fire-fighting room is arranged in the same position; the cableway comprises an upper fixed station and a lower fixed station, the upper fixed station is arranged on the side of the ground channel, and the lower fixed station is arranged on the other side of the ground channel on the lower floor corresponding to the ground channel on the upper floor; the cableway further comprises a strop roadway, the strop roadway is provided with a plurality of lifting slings, and the lifting slings are fixed to each other through tow ropes; the cableway is provided with a reduction gear used for helping the lifting slings lower sliding speed in the descent process; and the closed gate is arranged at the entrance of the fire-fighting room, is normally in a closed state and cannot be opened, and is connected with a fire alarm, and when the fire alarm is triggered, the closed state of the closed gate is end.

The invention relates to an anti-seismic structure and an anti-seismic method for gyro measurement while drilling, and relates to the field of underground azimuth measurement while drilling. A second section cylinder is internally provided with a section cylinder inner cavity, the lower end of a damping spring is fixedly connected with the bottom surface of the section cylinder inner cavity, a hanging plate is slidably connected with the side wall of the section cylinder inner cavity, and the bottom surface of the hanging plate is connected with a falling block through a hanging line; the bottom face of the falling block abuts against the upper end of the damping spring, the hanging plate is used for installing a gyro measuring instrument, the damping limiting blocks are detachably connected with the side wall of the inner cavity of the section cylinder, and the two sets of damping limiting blocks are located on the upper side and the lower side of the hanging plate respectively and abut against the hanging plate. The device has the beneficial effects that the falling block is additionally arranged below the hanging plate for mounting the gyro measuring instrument for counterweight, so that the stability of the hanging plate is enhanced. A damping spring and a damping limiting block are used for buffering and protecting the falling block and the hanging plate, so that the stability and damping of the gyro measuring instrument are realized, the measuring precision of the gyro measuring instrument is ensured, and measurement while drilling can be realized. The anti-seismic structure is simple and convenient to repair and maintain.

The invention discloses a construction method of an anti-falling net structure of an inspection well cover for a municipal road. The construction method includes the steps that (1) a buffer assembly is installed; (2) butt joint of anti-falling net plates is conducted; (3) an inner anti-falling plate is mounted; (4) a filter hopper is mounted; (5) drill holes are marked; (6) an anti-falling filtering structure is formed; and (7) construction is conducted in place in an inspection well. The construction method of the anti-falling net structure of the inspection well cover for the municipal road is simple in process, low in positioning assembly and operation difficulty, low in labor intensity, high in construction efficiency and short in construction period, the construction cost is effectively reduced, flexible adjustment can be achieved in the construction process, and the construction quality is guaranteed.

The invention discloses a suspension type bicycle parking device. The suspension type bicycle parking device comprises a bottom plate, a support rack and a tire clamping device and is characterized inthat the support rack is fixed on one side of the top of the bottom plate, the tire clamping device is slidably connected to the lateral side of the support rack and comprises a fixing shell, first limit blocks, a rear abutting plate, guide rods, a guide column, connecting blocks, second limit blocks, limit ejector pins, limit springs, a tire surface clamping arc-shaped block, a tire surface abutting block, support springs, middle abutting plates, clamp blocks and a wedge block and is characterized in that the first limit blocks are symmetrically fixed to the inner wall of the fixing shell, the inner wall of the fixing shell is provided with the rear abutting plate located between the first limit blocks, the guide rods are symmetrically fixed to two ends of the rear abutting plate, the lateral sides of the first limit block are provided with guide grooves coordinated with the guide rods, the guide rods are slidably connected into the guide grooves, the guide column located on one sideof the rear abutting plate is fixed to the fixing shell, and the connecting blocks are rotatably connected to the middle of the guide column. By the suspension type bicycle parking device, a bicyclecan be conveniently suspended and taken down.

The invention discloses a fluid power paraffin removal device of a rodless pump oil recovery system, and aims to provide an efficient paraffin removal device which is driven by utilizing the fluid power generated by the lifting of liquid flow in a pipe column, so that removing paraffin deposit on the wall of an oil pipe wall of the rodless pump oil recovery system is realized. The device is characterized in that the outer layer comprises an outer sleeve pipe unit, a scraper unit and a rubber barrel; the inner layer is a center rod unit; the scraper unit adopts a four-connecting-rod structure and is provided with a limiting stopper; direction-alternating and diameter-varied control structure for affecting the scraper unit and a mechanism for locking the rubber barrel are arranged on the center rod unit; the rubber barrel is used for changing the annular overflow area formed by the paraffin removal device in the oil pipe and controlling the fluid power born by the paraffin removal device, so that the rising and falling of the paraffin removal device are realized; through the relative position of the centre rod and the limiting stopper, the paraffin removal outer diameter opened by the scraper is controlled, so that gradual paraffin removal performed step by step is realized. The paraffin removal device has the advantages that the additional power is not required; the gradual paraffin removal performed step by step can be realized; the paraffin removal diameter is flexile and controllable; the labor intensity of workers is reduced; the working efficiency of paraffin removal is improved.

The invention discloses insulation pipes for heavy oil well hot water closed circulation heating viscosity reducing equipment, and relates to the field of oil field oil extracting devices. The insulation pipes includes upper connectors, a pipe body assembly, and lower connectors, and during using, when the any two adjacent insulation pipes for the heavy oil well hot water closed circulation heating viscosity reducing equipment are used, the upper connector of one of the insulation pipes for the heavy oil well hot water closed circulation heating viscosity reducing equipment is connected with the lower connector of the other insulation pipe for the heavy oil well hot water closed circulation heating viscosity reducing equipment in a threaded mode. Through the arrangement, the insulation pipes for the heavy oil well hot water closed circulation heating viscosity reducing equipment can be maintained and changed, the cost is low, the loss is small, damage is not prone to happening during well descending, clamping grooves are formed in the upper connectors, a hoisting tool is used for clamping the clamping grooves, and the equipment can be descended into the oil well, according to the insulation pipes for the heavy oil well hot water closed circulation heating viscosity reducing equipment, a special well descending device is not needed, operation can be realized by normal workers, the using cost is low, and well descending is convenient.

The application provides a downhole throttle. The downhole throttle comprises a central pipe, wherein a fishing-unsealing mechanism and a seat sealing self-locking mechanism are respectively arrangedat two ends of the central pipe, and a clamping seal mechanism is arranged between the fishing-unsealing mechanism and the seat sealing self-locking mechanism, wherein the fishing-unsealing mechanismcomprises a casing pipe, a support pipe, a Cavato part and a locking ball, wherein the casing pipe sleeves the central pipe, and connected with one end of the support pipe in a sleeving manner, the other end of the support pipe is in limit connection with the seat sealing self-locking mechanism, the Cavato part sleeves the support pipe and in limit connection with a hanging cap sleeving the casingpipe, the locking ball is arranged on the Cavato part in a limit manner through the casing pipe and the Cavato part and the support pipe are locked in the axis direction of the central pipe, and theclamping seal mechanism sleeves the side wall of the support pipe and is connected with the Cavato part and the seat sealing self-locking mechanism respectively.

The invention relates to the technical field of oil-gas well drilling, well completion, well cementation or well logging, in particular to an oil-gas well pneumatic expansion packer which comprises acentral pipe, an expansion pipe, an upper sleeve, a lower sleeve and a setting valve. The expansion pipe sleeves the central pipe, two ends of the expansion pipe are fixedly connected with the upper sleeve and the lower sleeve respectively, and two ends of the central pipe are fixedly connected with the upper sleeve and the lower sleeve respectively; the expansion pipe comprises a framework, an inner layer and an outer layer, and the framework is made of a metal material. The framework made of metal enables the expansion pipe to be higher in rigidity, less prone to deforming expansion and higher in needed deforming expansion pressure, so that jamming in the process of going down to a well is reduced, and the packer is easier in going down to the well.

The invention provides an under-pressure cutting and splicing construction method for water supply pipelines of different materials. The method comprises the following steps that S1, according to a pipeline drawing and surrounding environment, a water supply main pipeline cutting and splicing touching opening position is selected, covering soil of the water supply main pipeline cutting and splicing touching opening position is excavated until a water supply main pipeline is exposed, and downward excavating continues from the bottom of the water supply main pipeline to form a cutting and splicing work well with the designed depth; S2, a hoop in a connecting sleeve part sleeves the water supply main pipeline cutting and splicing touching opening position, and a connecting flange in the connecting sleeve part is mounted towards the direction of a pipeline planned to be connected; S3, a gap between the hoop and the water supply main pipeline is filled up; S4, one end of a gate valve and the connecting flange are mounted in an abut joint, a water drill is mounted on the other end of the gate valve, and the water drill passes through the position between the gate valve and the water supply main pipeline to form a seal cavity; S5, the gate valve is opened, the water drill is started for opening the water supply main pipeline, after hole forming, the water drill retreats, and the gatevalve is closed; and S6, the pipeline planned to be connected is spliced with the other end of the gate valve for mounting.

The invention discloses a raw material screening device for preparing environmental protection bricks, which belongs to the technical field of environmental protection brick preparation. A raw material screening device for the preparation of environmentally friendly bricks, comprising an installation box, a collection box is fixedly connected to the front side of the installation box, and a screening material frame A and a screening material frame B are arranged above the collection box. The frame A and the screening frame B are connected to the inside of the collection box through the transmission component B, and a discharge port is arranged below the collection box; an installation frame is arranged above the inside of the collection box, and the front side of the installation frame is provided with a A blanking channel, the rear side of the blanking channel is fixedly connected with a mounting seat, and the mounting seat is arranged on the upper side of the installation box; the blanking channel is arranged obliquely, and the lower port of the blanking channel is correspondingly provided with a blanking pipe, The center of the feeding pipe is fixedly connected to the upper side of the installation box through a connecting piece; the present invention solves the problem that non-interfering screening operations cannot be performed simultaneously for batch materials of different types or with uneven particle size.

The invention relates to a fire-fighting escape and rescue system for a high-rise building. The fire-fighting escape and rescue system for the high-rise building comprises a fire-fighting room arranged on each floor of the high-rise building, each fire-fighting room comprises a closed gate, a cableway, and a ground channel; the ground channel is arranged on the ground of the fire-fighting room, and the ground channel of each fire-fighting room is arranged in the same position; the cableway comprises an upper fixed station and a lower fixed station, the upper fixed station is arranged on the side of the ground channel, and the lower fixed station is arranged on the other side of the ground channel on the lower floor corresponding to the ground channel on the upper floor; the cableway further comprises a strop roadway, the strop roadway is provided with a plurality of lifting slings, and the lifting slings are fixed to each other through tow ropes; the cableway is provided with a reduction gear used for helping the lifting slings lower sliding speed in the descent process; and the closed gate is arranged at the entrance of the fire-fighting room, is normally in a closed state and cannot be opened, and is connected with a fire alarm, and when the fire alarm is triggered, the closed state of the closed gate is end.

The invention relates to an expansion device for a downhole branching system. The maximum radial size of an expansion assembly formed by combining all expansion unit elements is smaller than the sum of the respective maximum radial dimensions of each expansion unit. The invention uses hydraulic oil to push the piston as the driving source, and pushes the expansion unit connected with the piston rod into the outlet part to expand. When the expansion device is used to expand and shape the downhole branch system, it has the advantages of small size and convenient downhole. It is suitable for the downhole branch system where the size of the pipe string above the inlet of the outlet is smaller than the sum of the sizes of all outlets after expansion. Therefore, small size can be selected. The size of the upper pipe string, thereby reducing the cost significantly.

The invention belongs to the technical field of cutting equipment, and particularly relates to metal plate laser cutting equipment. The following scheme is provided currently in order to solve the problem that existing fixing and cooling are time-consuming, the metal plate laser cutting equipment comprises a bottom plate, a support is fixedly mounted on the bottom plate, a sliding table is arranged on the bottom plate, and a supporting plate is arranged on the sliding table; a motor is fixedly installed on the bottom plate, a transmission mechanism is arranged on the bottom plate and comprises a first chain wheel, the first chain wheel is fixedly connected with an output shaft of the motor, a second chain wheel is rotatably installed on the supporting plate and fixedly connected with a shaft rod, and the same chain is installed on the first chain wheel and the second chain wheel in a transmission mode; and a sliding block is rotationally installed on the chain, a hollow-square-shaped plate is slidably installed on the sliding table, and the sliding block is slidably connected with the inner wall of the hollow-square-shaped plate. According to the metal plate laser cutting equipment, a metal plate can be automatically clamped, manpower is saved, the metal plate can be rapidly cooled, the working efficiency is improved, and the metal plate laser cutting equipment is easy to use and convenient to operate.

The invention discloses a suspension type bicycle parking device. The suspension type bicycle parking device comprises a bottom plate, a support rack and a tire clamping device and is characterized inthat the support rack is fixed on one side of the top of the bottom plate, the tire clamping device is slidably connected to the lateral side of the support rack and comprises a fixing shell, first limit blocks, a rear abutting plate, guide rods, a guide column, connecting blocks, second limit blocks, limit ejector pins, limit springs, a tire surface clamping arc-shaped block, a tire surface abutting block, support springs, middle abutting plates, clamp blocks and a wedge block and is characterized in that the first limit blocks are symmetrically fixed to the inner wall of the fixing shell, the inner wall of the fixing shell is provided with the rear abutting plate located between the first limit blocks, the guide rods are symmetrically fixed to two ends of the rear abutting plate, the lateral sides of the first limit block are provided with guide grooves coordinated with the guide rods, the guide rods are slidably connected into the guide grooves, the guide column located on one sideof the rear abutting plate is fixed to the fixing shell, and the connecting blocks are rotatably connected to the middle of the guide column. By the suspension type bicycle parking device, a bicyclecan be conveniently suspended and taken down.

The invention provides a temporary plugging material and a preparation method thereof. The preparation method comprises the following steps: stirring and reacting oxalic acid, polyethylene glycol, a main catalyst and a cocatalyst at 100-150° C. under inert gas protection conditions for 1-3 hours, Then stir and react at 150-180°C and absolute pressure of 50-200Pa under vacuum conditions for 2-4h to obtain polyester polyol material; Stir and react under 10-20KPa vacuum condition for 1-2h to obtain low-temperature temporary plugging prepolymer material; carry out reactive extrusion granulation of polyester polyol material and low-temperature temporary plugging prepolymer material at 150-170°C, be made of. The temporary plugging material can effectively solve the problems of the existing temporary plugging agents that are easy to stick at the initial stage of contact with water and have poor low-temperature degradation performance.