3443 results about "Handrail" patented technology

The utility model discloses a flatcar station adjusting auxiliary device, which belongs to the technical field of station auxiliary devices and comprises a pedal plate detachably mounted on a flatcar vehicle-mounted fixed pedal plate and an extending handrail detachably mounted on a flatcar handrail frame. A concave clamping groove used for clamping a horizontal steel plate on the outermost side of a flatcar vehicle-mounted fixed pedal is formed in the bottom face of the pedal, and an L-shaped clamping groove used for clamping a horizontal steel plate on the secondary outer side of the flatcar vehicle-mounted fixed pedal is formed in the front end of the pedal. The extending handrail comprises a supporting rod, a handrail ring arranged on the top of the supporting rod and a connecting assembly which is connected with the supporting rod and used for being detachably connected with the flat car handrail frame. The utility model can effectively solve the problem of potential safety hazard caused by poor standing position of railway shunting personnel at the box step at the front end of the flatcar.

The utility model provides a novel rail unloading operation vehicle. A novel rail unloading operation vehicle comprises a hook buffer device, a handrail, a bogie, a boarding ladder, a steel rail traction device, an electrical system, a braking system, a rail unloading device, a welding machine storage platform, a guiding device, a rail shifting device, a vehicle frame and a cab. According to the novel rail unloading operation vehicle, steel rails are deformed to one side from the middle of the vehicle within allowable stress through the vehicle, fall into the center of the rail or the side of the rail through the guide device or directly fall into the rail bearing groove, and are matched with a rail welding vehicle and a rail transporting vehicle to complete transportation, welding and unloading of the long steel rails; the steel rail can pass through the lower part of the cab, so that a transverse displacement space is vacated for rail unloading operation; alignment with a welding machine of a rail welding vehicle is facilitated, the rail unloading position is flexible, and possibility is provided for integrated construction of rail overhaul; the steel rail is moved to the multiple rail unloading positions from the horizontal center position through the guide device, the variable site construction environment can be used, and convenience is provided for follow-up construction.

A storage and transportation apparatus is disclosed. The apparatus may include a base frame and a base plate attached to the base frame. The base plate may be attached to the base frame such that the base plate may be disposed parallel to a base frame plane. The apparatus may further include an inverted U-shaped handrail attached to the base plate. The handrail may include a handrail side portion and a handrail top portion. The apparatus may further include a support member attached to the base frame and the handrail top portion. The support member may be disposed at a predefined angle relative to the base frame plane. The apparatus may further include a deformable strap removably attached to the base frame and the handrail top portion. The apparatus may additionally include a J-bar that may be removably attached to the handrail side portion via a fastener.

The invention discloses a two-wheeled storage trolley which comprises a first platform and a grab rail, wherein the first platform is provided with a front face and a back face which are arranged back to back; the grab rail is rotationally connected to one end of the first platform, and a grab rail locking mechanism acts on the grab rail to limit rotation of the grab rail; the first platform is provided with a pair of first rollers, the pair of first rollers is arranged at one end, far away from the grab rail, of the back surface, and roller seat bodies of the pair of first rollers are symmetrically arranged and are rotationally connected to the first platform in the directions close to and far away from the grab rail respectively, so that the first rollers have a standing state and an overturning storage state; according to the trolley mechanism, through cooperation of the linear moving mechanism and the first rolling wheels, the trolley mechanism has the two-wheel using state and the storage folding state, and therefore the trolley can be freely switched between the two-wheel using state and the storage folding state according to the using condition.

The utility model discloses a handrail lock which comprises a lock shell, an unlocking hook, a pawl, a lock shaft, a ratchet wheel and a limiting piece, the unlocking hook, the pawl, the lock shaft, the ratchet wheel and the limiting piece are arranged in the lock shell, the unlocking hook, the pawl and the lock shaft are all rotationally connected in the lock shell, the ratchet wheel is sleeved and fixedly connected to the lock shaft, the pawl is arranged between the unlocking hook and the ratchet wheel, and the limiting piece is arranged on one side of the ratchet wheel; the lock shaft extends out of the lock shell and is fixedly connected with the handrail, and the axis of the lock shaft is coaxial with the rotating axis of the handrail; a limiting hook is arranged on the pawl; a first limiting tongue and a second limiting tongue are arranged on the ratchet wheel, and the limiting piece is located on a rotating path of the first limiting tongue and the second limiting tongue; when the armrest is folded, the limiting hook is matched with the first limiting tongue to limit the ratchet wheel to rotate towards the opening direction, and the limiting piece is matched with the second limiting tongue to limit the ratchet wheel to rotate towards the folding direction; the unlocking hook is in driving connection with the pawl and used for driving the pawl to rotate away from the ratchet wheel so as to relieve limiting of rotation of the ratchet wheel in the opening direction, and the limiting piece is matched with the first limiting tongue to limit the handrail after the handrail is opened.

The utility model belongs to the technical field of vehicle-mounted accessories, and provides a handrail with a table board structure and a vehicle, the handrail comprises a handrail body, a table board, a table board and a table board, the connecting rod assembly comprises a first end and a second end, and the first end is rotationally arranged in the containing cavity; the table board assembly comprises a main table board and an auxiliary table board, and the auxiliary table board is rotationally connected with the main table board and can be switched between a folding position and a maximum unfolding position on the main table board; and the transmission assembly is arranged between the main table plate and the second end. Compared with the prior art, the folding and unfolding type armrest has the advantages that the auxiliary table board of the table board assembly is driven by the transmission assembly to be folded and unfolded relative to the main table board, and on the premise that the effective supporting area of a table top of the table board assembly is not reduced, the required storage space is smaller when the table board assembly is located at the storage position, so that the space occupied by the whole armrest is smaller.

The utility model provides an armrest which is used for solving the technical problem that some existing seat armrests cannot rotate along with a backrest and cannot meet the use requirements of a user. The armrest comprises a first rod part, the periphery of the first rod part is sleeved with a second rod part in a sliding adjusting mode, one end of the second rod part is rotationally provided with a third rod part, the tail end of the first rod part is provided with a first installation hole in a penetrating mode, and the first rod part is connected with the side face of a seat plate of a seat through the first installation hole. A second mounting hole is formed in the tail end of the third rod part in a penetrating mode, the third rod part is connected with the side face of the seat backrest through the second mounting hole, when the seat backrest and the seat plate rotate, the second rod part and the third rod part rotate, and the requirements of different sitting postures of a user can be met.

The embodiment of the utility model provides an armrest assembly, a seat assembly and a vehicle. The armrest assembly comprises an armrest, a display screen device and a lifting device. The handrail is connected to the lifting device, the lifting device is used for driving the handrail to be switched between a first position and a second position, and the second position is higher than the first position; the display screen device comprises a display screen and a turnover mechanism, the display screen is movably connected to the handrail through the turnover mechanism, and the turnover mechanism is used for driving the display screen to be switched between the unfolded state and the folded state. According to the embodiment of the invention, the armrest is liftable, and the display screen can be unfolded or retracted, so that a user can adjust the display screen according to actual needs, and the use experience of the user can be improved.

The utility model relates to the technical field of manufacturing of ro-ro passenger ships, in particular to a cutting platform for a composite handrail of a ro-ro passenger ship, which is provided with a base and is characterized in that the base is a strip-shaped steel tube with a square section, a strip-shaped sliding hole is arranged above the base, and the strip-shaped sliding hole is communicated with the base. Two fixed cutting seats and a sliding supporting seat are arranged on the base above the strip-shaped sliding hole, the two fixed cutting seats are fixed on the base, a cutter is fixed on the side surface of the base between the two fixed cutting seats, and the sliding supporting seat is in sliding connection with the strip-shaped sliding hole; the handrail is driven by the sliding supporting base to move to the distance needing to be cut and then stops, the cutter conducts cutting, and the handrail cutting device has the advantages of being simple in structure, stable in handrail placement, good in cutting effect, high in cutting efficiency and the like.

The invention discloses a broiler chicken transportation carriage with air guiding and conveying functions. A broiler chicken transportation carriage capable of achieving air guiding and conveying comprises a transportation vehicle, a carriage body is installed behind the transportation vehicle, a fixing frame is installed on the top outside the transportation vehicle, and a leaf-shaped head guiding cover is fixed to the fixing frame; the compartment comprises a compartment body, a swing compartment door is installed behind the compartment body, a compartment carrying bin is formed in the compartment body, a plurality of sets of handrail sleeves are installed on the inner wall of the compartment body, arch-shaped frame pipes are erected between the handrail sleeves, a plurality of sets of air guiding devices are installed on the arch-shaped frame pipes, and a plurality of sets of air supply devices are fixed to the inner wall of the front portion of the compartment carrying bin. A separation air guide plate is arranged in the air guide device, a fixed swing frame is fixed to the separation air guide plate, even number sets of air guide covers are installed on the front surface and the rear surface of the separation air guide plate, extrusion-preventing spring frames are arranged on the two sides of each air guide cover, a fixing lug is arranged on the outer wall of the tail end of the separation air guide plate, a hanging and fixing assembly is installed on the fixing lug, and a built-in inclined guide groove is formed in each air guide cover.

The utility model provides a folding hinge connecting structure of a sofa bed, which comprises a left armrest, a right armrest and a bed frame, and the bed frame comprises a first bed frame and a second bed frame which are sequentially arranged along the width direction of the armrests; the folding hinge comprises a first supporting arm and a second supporting arm, one end of the first supporting arm is hinged to one end of the second supporting arm, the other end of the first supporting arm is fixedly connected with the left armrest or the right armrest, and the end, away from the first supporting arm, of the second supporting arm extends to form a supporting face used for supporting the second bed frame. The second bed frame is provided with a first connecting column matched with the first connecting groove; the first connecting groove is divided into a first part and a second part which are communicated with each other, so that the folding hinge can be switched between a locking position and a moving position; the tail end of the first connecting column extends outwards in the radial direction to form a circle of flange, the diameter of the first part is larger than that of the flange, and the diameter of the second part is smaller than that of the flange. When the folding hinge is in the movable position, the flange is located on the first part, and when the folding hinge is in the locking position, the flange slides into the second part.

The objective is to provide a railway tank car that can ensure the strength of the handrails while suppressing an increase in the mass of the scaffolding. [Solution] The first reinforcing member 50 connects the base of the support column 41 and the upper surface of the bracket 20. The first reinforcing member 50 is positioned on the outside of the support column 41 in the vehicle width direction (left side of the page in Figure 4(a)). That is, the short side 5b of the first reinforcing member 50 is welded to the upper surface of the bracket 20 in a region that is on the outside of the support column 41 in the vehicle width direction. Therefore, it is not necessary to increase the width dimension of the bracket 20, as in the conventional structure in which a pair of reinforcing members 151 are arranged in a V-shape on both sides of the support column 141 (see Figure 6(b)). Thus, the strength of the handrail 40 can be increased while suppressing an increase in the mass of the scaffolding 2.

In the homes where elderly people are accustomed to living, the knee joints are subjected to a lot of stress when going up and down stairs, especially when going down them, which causes frequent falls and can lead to serious health problems such as fractures, hospitalization, and even becoming bedridden or experiencing the progression of dementia. [Solution] Hydraulic bags containing hydraulic oil are placed under the treads of each staircase, and the hydraulic bags are connected to each other by hoses with control valves. When the operating lever inside the handrail is gripped, the wire opens the control valve, and the hydraulic oil is pushed out by the user's weight, causing the treads to descend. The pushed-out hydraulic oil is injected into an empty hydraulic bag container on the floor below, causing the treads on the lower floor to rise and be at the same floor height. This provides an inexpensive, non-powered elevator "specialized for descending," allowing users to easily descend to the floor below without bending their knees.

A new type of bed guard rail plate, the main body is composed of two symmetrical guard plates, and the outside of the joint is provided with a hinge, and the inside of the joint is provided with a lock buckle, the outer end of the guard plate is provided with a supporting column, the lower end of the guard plate is provided with a rotating shaft, the bed is provided with a clamp and a shaft seat, the lower end of the supporting column is inserted and locked in the clamping hole of the clamp, and the rotating shaft is arranged in the shaft hole of the shaft seat. When used normally, the guard rail plate can prevent the patient from falling off the bed, and the patient can sit comfortably when sitting on the bed, and the sleeve on the handrail is convenient for the patient to exercise the palm grip. When the patient needs to get out of bed, the two guard plates are closed, which is convenient for the patient to get out of bed, and the patient can hold the other guard plate after getting out of bed, especially for the early patients, which has good protection and can reduce the nursing workload. When the patient needs to be transported by the bed, the bed guard rail plate is turned down to open the whole, which is convenient for the patient to be transported by the bed.

The utility model relates to the field of vehicle armrest box detection equipment, in particular to a roller shutter force detection mechanism, which comprises a fixed frame, a sliding mechanism, a force sensor and a positioning and clamping device, the sliding mechanism and the positioning and clamping device are arranged on the fixed frame, an armrest box to be tested is placed on the positioning and clamping device, and the force sensor is arranged on the fixed frame. A roller shutter of the armrest box faces the sliding mechanism, the force sensor is installed on the sliding mechanism and moves along the opening and closing path of the roller shutter along with the sliding mechanism, a clamping block is fixedly connected to the force sensor, and the clamping block is connected with a protruding block on the roller shutter in a clamped mode in the moving process of the force sensor. According to the utility model, the longitudinal sliding plate can freely slide in the horizontal and vertical directions, and is matched with the arc-shaped guide rail, so that the force sensor can move along the shape of the roller shutter and is attached to the moving track when the roller shutter is opened and closed, the force value of the whole moving process of the roller shutter can be accurately detected, the detection process is stable, and the detection result is accurate.

The invention provides a tray and a child chair, the tray is suitable for being detachably installed on a handrail of the child chair, and the tray comprises a tray body provided with a tray side wall; the clamping piece is movably connected to the tray body, and the clamping piece is arranged in front of the tray side wall; wherein a clamping space is formed between the side wall of the tray and the clamping piece, the handrail can be inserted into the clamping space in the height direction so as to be clamped with the clamping piece, and the clamping piece can move between a clamping position and a separation position relative to the handrail. The tray is simple in structure, low in purchase cost, convenient to install and fix and good in reset effect, and components are standard components.

The present disclosure provides a folding cart. The folding cart includes a cart frame assembly, a wheel assembly, and a handrail assembly. The cart frame assembly may include a plurality of sets of support rod assemblies and a base frame hinged to lower ends of the plurality of sets of support rod assemblies. The wheel assembly may be disposed at a lower end of the cart frame assembly to realize movement of the cart frame assembly. The handrail assembly may be disposed on the cart frame assembly. The cart frame assembly may be driven to move through the handrail assembly under an action of an external force. The handrail assembly may be rotatably connected to the cart frame assembly to make the handrail assembly rotate at least on a first plane.

1. The name of the design product: multi-functional height-increasing pad for vehicle handrest box. 2. The use of the design product: for placing and storing articles in vehicle handrest box. 3. The design points of the design product: in shape. 4. The picture or photo best indicating the design points: perspective view.

The utility model relates to the technical field of building construction, and discloses a quickly assembled and disassembled stair handrail for building construction, which comprises two stand columns, first connecting pieces are fixedly connected to the upper ends and the lower ends of the opposite sides of the stand columns, and first cross rods are rotatably connected to the exteriors of the first connecting pieces. A second cross rod is installed at the end of the first cross rod through an adjusting assembly and used for adjusting the length of the handrail, a lifting plate is connected to the outer portion of the lower end of the stand column in an up-down sliding mode, a back plate is fixedly connected to the rear end of the lifting plate, and a tightening latch is fixedly connected to the lower end of the back plate. According to the stair handrail, the overall length of the handrail is adjusted through stretching and retracting of the second transverse rod relative to the first transverse rod, the handrail is made to meet the requirements of different stair lengths, the applicability and universality of the stair handrail are improved, the handrail is fixed to the edge of a stair through cooperation of the rotating cylinder and the stand column, operation is easy and fast, and the stair handrail is suitable for building construction. And temporary installation is used for guaranteeing the safety of constructors.

The aluminum electrolysis emergency air pick tool car comprises two car body supports, the two car body supports are horizontally arranged, a plurality of partition plates are evenly and fixedly connected between the two car body supports, one end of each car body support is fixedly connected with a handrail, the other end of each car body support is fixedly provided with a bottom plate, and the bottom plate is vertically arranged. The surface of the spacing plate is fixedly connected with a main placing rod; wheels are installed on the bottom face of the vehicle body support and connected through connecting rods. The main placing rod comprises two vertical placing rods and a horizontal placing rod, the two vertical placing rods are fixedly mounted on the surface of the spacing plate, and the horizontal placing rod is fixedly connected between the ends of the two vertical placing rods. The utility model has the beneficial effects of safe and reliable operation, stable loading, wide environment adaptation range and high transportation operation efficiency, can quickly reach the site of the maintenance working condition, shortens the maintenance time, and ensures the effective treatment of emergencies in the production process and the continuous operation of safe production.

The utility model relates to fire -fighting equipment technical field especially discloses a kind of multifunctional auxiliary device of fire hose, including bottom plate, tripod and rotary handle, tripod is set on the top of bottom plate, steering wheel is uniformly installed at bottom plate lower end portion four corners, handrail is installed on the top of bottom plate, bottom plate, steering wheel and handrail jointly constitute handcart structure, it is convenient to carry the device and fire hose on the device, fixed sleeve is symmetrically installed on the top of bottom plate, hand screw bolt is uniformly installed on two fixed sleeves, fixed sleeve is opened and closed by hand screw bolt, fixed wheel is symmetrically installed on the lower end of tripod, cylinder shaft is installed on the upper end of tripod, storage lever is installed on one side of cylinder shaft, and the other side is connected with rotary handle, baffle is welded on storage lever, the utility model is opened and closed by hand screw bolt through the ingenious cooperation of each component and is realized multifunctional auxiliary use to fire hose, with the characteristics of fine structure, easy operation, good use effect etc.

The application provides a lifting handrail and seat, which comprises a handrail seat connected with a seat body, a lifting part provided on the handrail seat and capable of being in a lifting state and a staying state, a clutching device provided between the handrail seat and the lifting part, a pull line control part movably provided on the lifting part, an active pull line connected with the pull line control part at one end of the clutching device and a driven pull line connected with the other end of the clutching device; when the lifting part is in the lifting state, the clutching device is separated, and the active pull line is disconnected with the driven pull line; when the lifting part is in the staying state, the clutching device is combined, the active pull line is connected with the driven pull line, the pull line control part can drive the clutching device to lift through the active pull line, and then drives the driven pull line to move; the seat further comprises a bottom plate, the driven pull line extends from below the handrail seat to the bottom plate and is connected with a movement control mechanism in the bottom plate; the whole pull line is disconnected and connected through the clutching device in the scheme, the active pull line moves with the handrail in the separation state, and the driven pull line remains stationary, so that the length change of the exposed pull line is avoided.

The invention discloses a handrail structure, and relates to the technical field of handrails, the handrail structure comprises a handrail body, a base and a plurality of support rods, the handrail body is arranged above the base, the plurality of support rods are arranged between the handrail body and the base, the handrail body is provided with a loading structure and a loading driving structure, and the loading driving structure is arranged on the loading structure. The handrail body is provided with a sliding groove extending along the handrail body, the carrying structure is slidably connected with the sliding groove, the carrying driving structure is used for driving the carrying structure to slide along the sliding groove, the base is provided with a lifting driving structure, and the lifting driving structure is used for driving the carrying structure to slide along the sliding groove. The lifting driving structure is used for driving the supporting rod to change the length so as to achieve lifting of the armrest body. According to the armrest structure, conveying of objects can be achieved, and the height of the armrest body can be adjusted.

The utility model provides a kind of concrete slab joint sweeper, including support, joint sweeping mechanism and walking wheel, support includes frame body and handrail, joint sweeping mechanism includes driving device and joint sweeping brush, joint sweeping brush is arranged in the center of frame body front end bottom, driving device is arranged on the upper portion of frame body, walking wheel is arranged in the center of frame body rear end bottom, the utility model guarantees the accuracy of joint sweeper, construction quality is better, efficiency is higher, economy is more optimal, convenient time-saving.

The invention provides a system for detecting a behavior of not holding a handrail based on deep learning, and the system comprises a deep learning calculation module which is used for carrying out the detection of a person from an image transmitted by a camera based on a pre-trained person detection model, and carrying out the multi-dimensional feature analysis of the person based on a person detection result; the handrail state analysis module is used for carrying out handrail judgment on the personnel based on the multi-dimensional characteristic analysis result of the personnel in combination with a preset stair area and a handrail area; and the alarm reminding module is used for carrying out targeted voice broadcast reminding on the personnel on the current stairs when the personnel are determined not to hold the handrail based on the handrail holding judgment result. The use safety of the stairs is effectively improved, the falling accident risk is reduced, automatic and real-time monitoring and intervention are achieved, manual guarding is not needed, and the intelligent management efficiency is improved.

This utility model relates to a pipeline sealing device for urban gas engineering, including a sealing pipe head and a rubber sealing plug. The outer wall of the sealing pipe head is provided with an external pipe section and a handrail. The external pipe section is located on one side of the handrail, and a rubber sleeve is provided on the outer surface of its front end. A gas sensor is provided on the outer wall of the external pipe section. An annular airbag is fixedly installed on the inner wall of the external pipe section, and an inflation nozzle is fixedly installed on the outer wall of the annular airbag. A buffer seat is provided at the front end of the rubber sealing plug, and an inner rubber tube is fixedly installed on the inner wall of the sealing pipe head. A front plate is provided at the front end of the buffer seat. In this utility model, the sealing pipe head can seal gas pipelines of different inner diameters with the rubber sealing plug, improving the adaptability of the sealing device. The buffer seat can buffer the gas pressure, preventing the rubber sealing plug from loosening due to pressure. Furthermore, the gas sensor can detect the sealing performance under pressure, preventing gas leakage and potential hazards.

The invention discloses a protective fence for municipal construction engineering. The protective fence comprises a fence body and a protection and noise reduction integrated module. The fence body is composed of a left support, a right support and detachable horizontal handrails, and a mounting groove is formed between every two adjacent handrails. The protection and noise reduction integrated module is installed in the groove through a base plate, a flexible bag body filled with shear thickening fluid is arranged on the outer side of the protection and noise reduction integrated module to serve as a protection unit, and the impact self-adaptive response characteristic is achieved. A Helmholtz resonance silencer is arranged on the inner side of the noise reduction device to serve as a noise reduction unit, a water collection funnel with a flow guide piece and a one-way drainage valve is integrated at the bottom of the silencer, and cooperation of efficient targeted noise reduction and automatic drainage and water accumulation prevention is achieved. The device integrates intelligent physical protection and acoustic treatment functions, the problems that a traditional fence is single in function, noise reduction equipment is prone to failure and inconvenient to maintain are solved, and the safety and environment management level of a building construction site is remarkably improved.

The utility model relates to the technical field of gas-insulated switchgears, and discloses a high-sealing arc extinguishing insulation gas-insulated switchgear, which comprises a cabinet body, a slideway is arranged at the bottom of the inner wall of the cabinet body, the inner wall of the slideway is connected with a protective cover in a sliding manner, the inner wall of the protective cover is fixedly connected with a motor, the driving end of the motor is fixedly connected with a follower plate, and the follower plate is fixedly connected with an arc extinguishing chamber. Two sliding rails are arranged at the bottom of the inner wall of the cabinet body, two driven plates are slidably connected to the inner walls of the sliding rails, sliding grooves are formed in the sides, close to each other, of the two driven plates, the outer walls of the driven plates are rotatably connected to the interiors of the sliding grooves, and a locking and sealing assembly is arranged outside the cabinet body. According to the utility model, the cabinet body is placed at a specified position, and the handrail is pulled to enable the sliding column to rotate to drive the force of the fixing rod on the fixing block to be released to open the cabinet door, so that the equipment shell, the protective cover and other parts are firmly fixed, the overall protection level of the equipment is improved, and internal sensitive parts are protected from external physical damage, chemical corrosion and the like.

This invention discloses a walking assistance chair for painless childbirth, belonging to the field of walking assistance technology. It addresses the problems of existing assistive devices, such as the lack of a folding seat with a commode opening, poor adjustability, lack of integrated IV function, and insufficient stability. The chair includes a front frame and a rear frame, connected at their bottom ends by a connector. A folding seat is rotatably mounted inside the connector. An armpit support is connected to the top of the rear frame via an external locking connector. An upper handrail is installed inside the armpit support, and a lower handrail is installed inside the rear frame. A commode opening is provided in the center of the seat of the folding seat, integrating a folding seat with a commode opening to simultaneously meet the needs of the mother for rest and toileting, eliminating the need for frequent standing and significantly reducing physical exertion. The seat can be quickly folded up, occupying only 1 / 3 of its unfolded space, facilitating storage and transport. It employs a four-point support structure with a U-shaped bottom tube in the front frame and an inclined support tube in the rear frame, combined with an anti-slip bushing on the outside of the U-shaped bottom tube, significantly improving anti-tipping ability and ground friction.