34results about How to "Adjust the support angle" patented technology

The vehicle-mounted head side pillow comprises a base, a left side pillow assembly and a right side pillow assembly, the left side pillow assembly and the right side pillow assembly are fixedly or detachably connected to the two opposite ends of the base, and the left side pillow assembly and the right side pillow assembly are the same in structure mirror image or non-mirror image; the left side pillow assembly comprises a connecting rod, a side pillow and a connecting mechanism fixedly arranged on the side pillow, the side pillow on the left side pillow assembly and the side pillow on the right side pillow assembly are used for supporting the left side and the right side of the head of a human body, and a sliding hole with a certain length is vertically formed in the connecting rod. The side pillows slide up and down along the sliding holes and are rotationally connected to the connecting rods in the horizontal direction. The sliding holes are formed in the connecting rods, and the side pillows are connected to the connecting rods in an up-down sliding mode through the connecting mechanisms, so that a user can adjust the height of the side pillows conveniently, the side pillows are more attached to the two sides of the head of the human body, the use comfort is improved, and the applicability is higher.

The utility model discloses a plant safety protection device for mine phytoremediation, and relates to the technical field of plant safety protection. The fixing device comprises arc-shaped plates, each arc-shaped plate is provided with a fixing mechanism, a connecting mechanism and a supporting mechanism, each fixing mechanism comprises a fixing assembly and a buffering assembly, and the fixing mechanisms are arranged, so that the extending length of an elastic band is adjusted according to the diameter of a trunk, and the arc-shaped plates can be tightly attached to the skin of the trunk. The device is easy to assemble and convenient to install, meanwhile, adjustment and fixation can be conducted according to trees of different diameters, the installation efficiency of the device is greatly improved, the fixing tightness degree can be adjusted through the telescopic characteristic of an elastic band, the growth environment of the trees is prevented from being affected, and the device is suitable for popularization and application. The dampers, the baffles and the springs are arranged on the outer walls of the arc-shaped plates, and after the arc-shaped plates are fixed to the lower half portion of the tree trunk, stones sliding off from the mine slope can be blocked.

The invention is suitable for the technical field of neurology nursing devices, and provides a lower limb position placing device for neurology nursing and a using method thereof, the lower limb position placing device comprises a base, a bearing seat, a fixing plate, a supporting mechanism and a limb bearing mechanism; and the bearing seat is arranged above the base. According to the scheme, the two ends of the bearing seat can be supported at different heights by adjusting the supporting mechanism, the overall supporting angle of the bearing seat and the limb bearing mechanism is adjusted, the lower limbs of a patient can be placed at good limb positions, a self-gravity clamping and limiting structure is formed through the limb bearing mechanism, and when the lower limbs of the patient are placed, the lower limbs of the patient can be clamped and limited by the self-gravity clamping and limiting structure. The guide rod can be driven to slide through the gravity of the lower limbs, then the driven rod is driven to be linked through the transverse plate, the limb supporting plate is synchronously linked through the driven rod and abuts against the lower limbs of the patient, the effect of clamping and limiting the lower limbs of the patient is achieved, the situation that the lower limbs of the patient need to be bound and fixed through a binding belt is avoided, operation is easy, and the labor intensity is greatly reduced.

The utility model relates to the technical field of surveying instruments, in particular to a surveying instrument stabilizer for engineering surveying, which comprises a support frame, a leveling structure and a surveying instrument body, the outer wall of a support plate is rotatably connected with a support rod, the bottom of the support rod is fixedly connected with a support pad, and the top of the support pad is fixedly connected with a fixed seat. The fixing base is in threaded connection with a first threaded rod, the bottom of the first threaded rod is fixedly connected with a drill rod, the top of the supporting plate is fixedly connected with a first fixing plate, the top of the first fixing plate is movably connected with three first spherical joints, the tops of the first spherical joints are fixedly connected with threaded rods, and the threaded rods are in threaded connection with fixing rods. The top of the fixing rod is rotatably connected with a second spherical joint, the second spherical joint is movably connected with a second fixing plate, and the top of the second fixing plate is fixedly connected with the surveying instrument body. The surveying and mapping instrument is provided with the supporting frame, so that the surveying and mapping instrument body can be stably fixed on the ground, the surveying and mapping instrument is convenient to store, and the portability is improved.

The utility model discloses a mounting bracket for a photovoltaic energy panel, which relates to the technical field of photovoltaic energy panel equipment mounting and comprises two groups of supporting bottom rods arranged side by side, and fixing clamping blocks are arranged on the outer surfaces of the upper ends of the two groups of supporting bottom rods. Connecting frame rods are arranged between the fixing clamping blocks on the adjacent sides of the two sets of supporting bottom rods, the two sets of connecting frame rods are fixed to the upper ends of the two sets of supporting bottom rods through the fixing clamping blocks, and connecting holes are formed in the front ends and the rear ends of the two sets of connecting frame rods. According to the mounting bracket for the photovoltaic energy panel, the supporting bottom rod and the supporting vertical rod are combined to form a mounting bracket structure, the supporting vertical rod and the sliding adjusting rod are combined to form the sliding adjusting assembly, the supporting height can be adjusted according to needs, and the supporting plate at the top end of the supporting vertical rod is used for mounting the photovoltaic energy panel. And the supporting angle can be adjusted through rotating blocks on the two sides of the supporting plate, so that the practicability of the device is higher.

The utility model relates to eucalyptus planting technical field, especially portable eucalyptus planting fixing device, including lower limit ring shell, the lower limit ring shell's outer surface right part is provided with the tree lower part installation mouth, the lower limit ring shell's inner wall upper part is provided with the inner fixed groove, the lower limit ring shell's inner wall fixedly connected with elastic adjustment fixed structure, the lower limit ring shell's outer surface lower part annular array is fixedly connected with three bottom reinforcement architecture. The utility model discloses a kind of portable eucalyptus planting fixing device, provide basic installation support by lower limit ring shell, elastic adjustment fixed structure is realized to the elastic stable clamping of different thickness eucalyptus with the help of spring, tight resistance plate etc. And avoid damage, tree body reinforcing assembly further improves fixed reliability, bottom reinforcement architecture enhances the overall stability of device, can conveniently provide stable fixing for eucalyptus planting, help eucalyptus growth, also can satisfy portable use demand.

The utility model relates to the technical field of measuring equipment, in particular to a measuring device for power construction. Comprising a tripod and a measuring instrument, the tripod comprises a base for loading the measuring instrument and three foot tubes rotatably installed on the periphery of the base through a damping rotating shaft, at least one foot tube is divided into a supporting tube and a connecting tube embedded in the supporting tube, a positioning bolt is arranged between the connecting tube and the supporting tube, and two sets of telescopic rods are installed at the end of the connecting tube in a spaced, radial and sliding mode. Elastic pieces are arranged between the telescopic rods and the connecting pipes, and connecting holes in one-to-one correspondence with the telescopic rods are formed in the upper ends of the supporting pipes. By adjusting the connecting state of the connecting pipes and the supporting pipes, truss supporting can be formed in the stretching state, the supporting angle of the lower side foot pipes is adjusted, the supporting range is widened, and therefore the tripod can be supported on the inclined face more stably.

The utility model discloses a multifunctional orchard ladder, which relates to the technical field of orchard ladders, and comprises a left support leg, a right support leg and pedal frames, and the pedal frames are uniformly connected between the left support leg and the right support leg; top frames are connected to the top ends of the left supporting leg and the right supporting leg, two fixing rods are fixed between the top frames, and dismounting assemblies are arranged on the outer sides of the top frames. According to the orchard ladder, the mounting grooves are reserved in the left supporting leg, the right supporting leg and the telescopic sleeve, the bases are correspondingly welded in the mounting grooves, then the ground inserting screws, the butt joint screws and the connecting screws can be correspondingly mounted in the bases, and when the orchard ladder is used in a muddy ground, the ground inserting screws can be inserted into the ground to improve the placement stability of the orchard ladder; and the end part of the butt joint screw rod is matched with a universal rotating ball to be matched with a universal foot cup, so that the left supporting leg and the right supporting leg can deal with complex terrain support, namely, the left supporting leg and the right supporting leg can be stably used in potholes, bulges or uneven grounds.

The utility model relates to the technical field of packing belts, in particular to a packing belt fixing trolley which comprises a movable supporting frame, a groove is formed in the surface of the movable supporting frame, a limiting cylinder is installed on the inner wall of the groove of the movable supporting frame in a penetrating mode, and a lateral baffle is fixedly connected to the outer surface of the limiting cylinder. An adjusting screw rod is installed on the rear surface of the limiting cylinder in a penetrating mode, and an adjusting sliding block is arranged on the outer surface of the adjusting screw rod. According to the packing belt fixing vehicle, by arranging the pressing roller and the clamping roller, double limiting is conducted on a packing belt, the pressing roller exerts certain pressure on the packing belt under the action of the locking sliding block and the spring to prevent the packing belt from loosening, and the clamping roller can be adjusted along with adjustment of the positioning sliding plate under the action of the linkage limiting mechanism; the packing belts with different widths are precisely limited, the situation that the packing belts are loosened in the using process is avoided, and the risks that due to the fact that the packing belts are loosened, people cannot be found, and people are stumbled and cut are reduced.

The utility model discloses an adjustable leg erecting device for orthopedic nursing, which comprises a support, a first support is hinged on the support, a worm gear is fixedly connected on the first support, a worm is meshed and connected on the worm gear, the worm is rotatably connected on the support, one end of the first support is hinged with a second support, and the other end of the first support is hinged with a third support. The second support is fixedly connected with first supporting cloth. The worm is used for driving the worm gear to enable the first support to deflect, so that height adjustment of the leg support is achieved, and compared with an existing lead screw type lifting design, the leg support is smaller in size and easier to place and store; the shank is supported through the second support, the thigh is supported through the third support, and the angles of the second support and the third support are adjustable, so that the leg can be better attached, the use comfort is improved, the angles of the second support and the third support are locked through the locking assembly, and the locking assembly has the advantages of being easy to operate and good in reliability. The supporting angle can be conveniently and quickly adjusted.

The utility model relates to the technical field of building construction devices, and discloses a building supporting device which comprises a base, a supporting frame, a connecting base and a connecting plate, the supporting frame is fixedly connected to the side wall of the top end of the base, and the end, away from the base, of the supporting frame is rotationally connected with a connecting shaft; the two ends of the connecting shaft are fixedly connected to the inner wall of a connecting base, the side wall of the connecting base is fixedly connected with a connecting plate, the inner wall of the top end of the connecting base is fixedly connected with a threaded ring, and the interior of the threaded ring is in threaded connection with a threaded rotating rod. A threaded rotating rod is rotated to drive a limiting rod to move out of a limiting inserting groove, meanwhile, the limiting rod ascends to pull a limiting pressing block to ascend through a guide ring and a lantern ring, a check block is moved out of a limiting tooth groove, and a connecting base and a connecting plate can rotate in a supporting frame through a connecting shaft; the supporting angle of the connecting plate and the connecting base can be adjusted, and the adaptability of the supporting device can be improved.

The utility model discloses a lily seedling cultivation basket matched with a bracket, which relates to the technical field of flower seedling cultivation and comprises a fixed bracket, an upper support plate and a lower support plate, fixed plates are mounted and connected on two sides of the fixed bracket, the upper support plate is mounted on the fixed bracket, and the lower support plate is mounted below the fixed bracket. A supporting rod is arranged between the upper supporting plate and the lower supporting plate, a plurality of holes are formed in the supporting rod, a plurality of clamping plates are installed on the supporting rod, a cultivation basket is installed between the clamping plates, and the cultivation basket comprises a fixing head, a bottom plate and a breast board. If not matched, air circulation may be unsmooth, the risk of plant diseases and insect pests and mould growth is increased, and the health of the nursery stocks is affected. By installing the supporting rods and adopting a detachable structure, the height and the supporting angle of the cultivation basket can be adjusted according to different requirements. When the nursery stocks grow to different stages, different spaces and heights are needed.

The utility model belongs to the technical field of mobile phone accessories, and discloses a mobile phone support. The mobile phone support comprises a supporting piece, a rotating assembly and a suction cup. The supporting piece is provided with a through hole. The rotating assembly comprises a rotating disc and a base, the rotating disc is rotationally arranged on the base with the axis of the base as the rotating center, and the end, away from the rotating disc, of the base is arranged to be bonded with the shell. The supporting piece is rotationally connected with the rotating disc, and the rotating assembly can penetrate through the through hole. The sucker is fixed at one end of the turntable away from the base. The mobile phone support is high in universality and can be used on a horizontal plane and a smooth plane at any angle. During installation, the mobile phone is adhered to the base. When the mobile phone is placed on the horizontal plane, the requirements of an operator on different placing angles of the mobile phone can be met through relative rotation of the supporting piece and the rotating disc and rotation of the supporting piece with the axis of the base as the rotating center driven by the rotating disc. In addition, the mobile phone can be adsorbed on a smooth plane at any angle through the sucker.

The present application relates to the field of dental treatment machines, in particular, a comprehensive dental treatment machine, including a reclining chair, a tray connected to the left side of the reclining chair through a support rod, an adsorption mechanism placed on the top of the tray, the adsorption mechanism including a first transverse tube, one side of the first transverse tube is connected to a second transverse tube, a brush is sleeved on the surface of the second transverse tube, a first one-way liquid inlet valve is installed through the inner cavity of the second transverse tube, a telescopic tube is connected to the left side of the first one-way liquid inlet valve, and a first movable tube is connected to the left side of the telescopic tube. The present application can rotate the threaded disk, thereby driving the brush to rotate, and can clean the patient's teeth with good cleaning effect. By cooperating with the telescopic tube and the first one-way liquid inlet valve, the saliva inside the patient's mouth can be absorbed and processed, which is convenient for doctors to treat the patient's mouth and brings convenience to doctors.

The utility model discloses a novel ship shafting positioning and mounting structure, which belongs to the technical field of ship shafting mounting and comprises a bottom plate, a supporting component is arranged on the upper surface of the bottom plate, and the supporting component comprises a first fixing plate, a first rotating shaft, two supporting rods, a second fixing plate and a top plate. A plurality of damping telescopic rods are fixedly connected to the upper surface of the bottom plate, the upper ends of the damping telescopic rods are fixedly connected to the lower surface of a top plate, an adjusting assembly is arranged on the surface of the supporting assembly and comprises two connecting plates, a right-hand and left-hand threaded column, a hand wheel and a baffle, and two pushing assemblies are fixedly connected to the upper surface of the top plate. And by arranging the pushing assembly, the first threaded column drives the pushing plate to move, the pushing plate slides on the surface of the supporting plate through the two sliding rods, and therefore the ship shafting is pushed to be subjected to position adjustment, and the purpose of facilitating positioning is achieved.

The utility model discloses a folding storage type mobile phone support, which relates to the technical field of mobile phone supports, and adopts the technical scheme that the folding storage type mobile phone support comprises a base plate, the backup plate is located at the top of the base plate, a first rotating shaft is fixedly embedded in the backup plate, the front end and the rear end of the first rotating shaft are both fixedly connected with connecting blocks, and the two connecting blocks are both fixedly connected to the top of the base plate; the number of the supporting blocks is two, the two supporting blocks are fixedly connected to one side of the backup plate, the inner sides of the two supporting blocks are connected with a second rotating shaft, and the second rotating shaft is fixedly sleeved with a supporting plate; the mobile phone supporting device has the advantages that when the mobile phone supporting device is used, the supporting plate can be clamped in the U-shaped frames at different positions, then the inclination angle of the backup plate is changed, the supporting angle of a mobile phone is also changed, the supporting angle of the mobile phone can be rapidly adjusted, and the mobile phone supporting device is convenient to use. And different use occasions of the mobile phone can be satisfied.

The utility model discloses an adjustable puncture pad of inflatable belongs to puncture pad field, including support subassembly and puncture pad subassembly, support subassembly includes the receiving mechanism, and the inside of receiving mechanism is equipped with two groups of support mechanism, and the inside of two groups of support mechanism all is equipped with adjusting mechanism, and receiving mechanism includes the receiving plate, and the one end hinged of receiving plate has the support plate, and puncture pad subassembly includes the puncture pad body of installing in receiving mechanism upper end, and the one end of puncture pad body is equipped with the air inlet, the utility model discloses the support subassembly cooperation puncture pad subassembly not only can adjust the thickness of puncture pad according to need, improve the convenience of patient receiving use, and also be convenient for to the patient support and carry out angle regulation through above -mentioned structure cooperation simultaneously, and then can enhance the practicability of puncture pad.

The utility model discloses a kind of lumbar support assembly and chair, including pedestal, lumbar support and adjusting shaft, lumbar support is pivoted in pedestal, lumbar support rotates around first rotation axis, adjusting shaft adjusting shaft can be rotatably connected in pedestal around second rotation axis, the axis of adjusting shaft coincides with second rotation axis, and second rotation axis is parallel with first rotation axis, eccentric shaft is equipped on adjusting shaft, wherein, lumbar support has matching groove, eccentric shaft is located in matching groove, and with the side wall of matching groove abuts, when rotating adjusting shaft, eccentric shaft can be transmission cooperation with matching groove, to drive lumbar support rotates to predetermined angle positioning around first rotation axis. When rotating adjusting shaft, eccentric shaft rotates, can deflect drive matching groove moves, and drive lumbar support rotates around first rotation axis, after adjusting shaft adjustment is completed, lumbar support can be positioned in current inclination, to be able to adjust lumbar support inclination according to requirement, to further conform to user waist, use more comfortable.

The utility model discloses an adjustable camera mounting structure, which relates to the technical field of cameras, and comprises a fixing plate, a folding mechanism is mounted at the front part of the fixing plate, a positioning mechanism is mounted at the tail end of the folding mechanism, the folding mechanism comprises a first supporting rod, the first supporting rod is fixedly mounted at the front part of the fixing plate, and the positioning mechanism is mounted at the tail end of the first supporting rod. A second supporting rod is movably installed at the position, close to the front end, of one side of the first supporting rod, an adjusting shaft is movably installed at the position, close to the top end, of the front portion of the second supporting rod, clamping shafts are installed at the rear portion of the adjusting shaft and the position, close to the bottom end, of the inner side of the second supporting rod and penetrate through the interior of the second supporting rod and the interior of the first supporting rod correspondingly, and annular grooves are formed in the peripheries of the clamping shafts; first positioning bolts are movably mounted in a manner of penetrating through the front end of the first supporting rod and the top end of the second supporting rod; the supporting angle and position are convenient to adjust, folding and storage are convenient, the occupied space is reduced, meanwhile, the two cameras can be installed and supported, and the horizontal direction and the inclination angle are convenient to adjust.

The utility model provides a face recognition channel gate, and relates to the field of gates. The face recognition channel gate machine comprises a gate machine body, opening and closing doors are symmetrically and rotatably connected to the interior of the gate machine body, a face recognizer is rotatably connected to the top of the gate machine body, a recognition mechanism is arranged at the top of the gate machine body, and the recognition mechanism comprises an adjusting assembly and a fixing assembly. The end, away from the human face recognizer, of the threaded rod extends into the rotating groove, and the fixed rod is connected with a rotating wheel, through the arranged adjusting assembly, the recognition angle of the human face recognizer can be adjusted, the situation that recognition cannot be conducted or recognition is slow due to sunlight irradiation is avoided, the passing efficiency of pedestrians is improved, and through the arranged fixing assembly, the recognition angle of the human face recognizer can be adjusted. A user can directly insert an identity card into the identification groove, the situation that the identity card deviates from an identification area is avoided, the identity card can be accurately and rapidly identified, the structure is simple, and practicability is high.

The utility model discloses a multifunctional back cushion of an automobile seat, and relates to the technical field of automobile decorations. Comprising a back plate, arc-shaped openings are symmetrically formed in the back plate, a rotating rod is rotationally connected to the inner wall of the back plate, the rotating rod is sleeved with a rubber sleeve, a fixing belt is wound around the rubber sleeve, and an air cushion is fixedly connected to the end, away from the rubber sleeve, of the fixing belt. The back cushion is installed on an automobile seat through the elastic band, when a person normally leans on the back cushion, the hook-and-loop fastener son and the hook-and-loop fastener mother are bonded, the air pump is started to inflate the air cushion after bonding is completed, the air cushion is more skin-friendly after being inflated with air, the comfort degree of the person leaning on the back cushion is improved, and when the person has a rest, the person can feel comfortable. The air valve is opened to discharge air inflated into the air cushion, the hook-and-loop fastener is detached, then the rotary knob is rotated, the fixing belt, the air cushion and the hook-and-loop fastener are wound on the rubber sleeve, the cylindrical back cushion is formed, the air cushion can be stored, meanwhile, convenience is brought to the back cushion of the head, and practicability is high.

The utility model discloses a mountainous geological disaster deformation monitoring device, which relates to the technical field of mountain landslide monitoring and comprises a corner reflector, a base, a main support rod, a support plate and at least three auxiliary support rods, the lower end of the main support rod is fixedly connected to the base, and the support plate is rotatably connected to the main support rod. The auxiliary supporting rods are evenly distributed on the main supporting rod in the circumferential direction, the lower ends of the auxiliary supporting rods are connected to the middle end of the main supporting rod in a sliding mode, the upper ends of the auxiliary supporting rods are connected to the supporting plate in a rotating mode, the lower ends of the auxiliary supporting rods are in threaded connection with limiting nuts abutting against the main supporting rod, and the corner reflector is fixedly connected to the supporting plate. The corner reflector has the effect that the technical problem that the installation angle of an existing corner reflector is difficult to adjust in the installation process can be solved.

This utility model discloses a T-shaped bracket for automotive hydraulic cylinders, including a bracket housing. A movable connecting plate is slidably connected inside the bracket housing. A hydraulic cylinder is fixedly connected to the upper part of the movable connecting plate. Adjustable sliding grooves are fixedly connected to both sides of the bracket housing. A second mounting hole is provided at the upper part of the adjusting sliding groove. A movable plate is slidably connected inside the adjusting sliding groove. A second fixing pin is threaded to one side of the movable plate. A connecting plate is rotatably connected to the upper part of the movable plate. A reinforcing rib is fixedly connected to the connecting plate. A reinforcing shell is fixedly connected to the outside of the reinforcing rib. In this utility model, the hydraulic cylinder generates vibration during its extension and retraction movement. This vibration can be transmitted to the bracket housing through the hydraulic cylinder. The reinforcing ribs and the reinforcing shell on both sides of the bracket housing can support the bracket housing, thereby avoiding local overload. The vibration generated by the hydraulic cylinder drives the reinforcing ribs to move inside the reinforcing shell, thereby rubbing against the concrete filling inside the reinforcing shell, thus achieving energy dissipation.

The utility model relates to the technical field of hydraulic engineering construction, in particular to an assembled retaining structure for hydraulic engineering, which comprises a retaining wall, a plurality of groups of first inserting rods are arranged at the bottom of the retaining wall, and a plurality of groups of limiting fixing holes are formed in one side wall of the retaining wall. A plurality of sets of triangular blocking strips are arranged on the other side wall of the retaining wall at equal intervals, a fixing bottom plate is arranged below the retaining wall, a plurality of sets of limiting inserting holes are formed in the surface of the fixing bottom plate, and a set of fixing round blocks are arranged at the other ends of the threaded connecting rods correspondingly; a group of fixing grooves are formed in the surface of each group of fixing round blocks, a group of ground inserting needles are arranged in each of the two groups of first cavities, a group of electric push rods are arranged in each of the plurality of groups of second cavities, and a group of limiting rods are arranged in each of the plurality of groups of second cavities. The supporting device is convenient to disassemble and use, and the supporting stability is improved.

The utility model provides a kind of suction cup lifting appliance for building glass curtain wall installation, it is related to building glass curtain wall installation technical field, including lifting appliance body, four corners of lifting appliance body are hinged with suction cup support, the inner wall sliding connection of suction cup support has extension rod.The suction cup lifting appliance for building glass curtain wall installation, by pressing press bar, sliding plate moves along the inner wall of through groove, the movement of sliding plate can drive the tooth from the extension rod in the slot, release the extension rod from the limit, at this moment, pull the extension rod outwards, and the movement of sliding plate can move spring, so that it produces elastic force, when extension rod drives suction cup body to move to suitable position and release press bar, at this moment, sliding plate will drive the tooth to be clamped into the slot in extension rod under the elastic force of spring, the position of extension rod is limited and fixed, so the length of suction cup support can be adjusted quickly and conveniently according to the size of glass curtain wall, improve its convenience when using.

The utility model discloses a liftable supporting device, which comprises a base, a lifting device, a lifting device, a lifting device, a lifting device and a lifting device, and is characterized in that the base is provided with a flat bottom surface and an upper surface opposite to the bottom surface; the sleeve is vertically mounted on the upper surface of the base and is provided with an upper end far away from the base and a lower end connected to the base; the supporting rod is sleeved with the sleeve in a telescopic mode and extends upwards from the upper end of the sleeve, and therefore the supporting rod can stretch out of the sleeve or retract into the sleeve along the axis of the sleeve; and the supporting assembly is constructed to be capable of supporting a to-be-supported object at the top of the supporting assembly and is connected with the supporting rod through a universal joint, so that the angle between the longitudinal extension axis of the supporting assembly and the longitudinal extension axis of the sleeve can be adjusted.

This invention discloses a hydraulic support system for the triangular area of ​​a retreat working face, comprising multiple support assemblies arranged sequentially. Each support assembly includes two rows of support groups arranged in a crisscross pattern. Each row of support groups includes two supports and a pushing cylinder, with adjacent supports connected by the pushing cylinder. Each support includes a base, a supporting cylinder, and a top beam. The supporting cylinder is vertically installed between the base and the top beam. The bases of one row of support groups are spaced apart from the bases of the other row, and the top beams of one row of support groups are arranged in a crisscross pattern with the top beams of the other row. The top surface of the top beam forms the support surface. The beneficial effects of this invention are: it effectively replaces the traditional I-beam and hinged beam support on the old working face side of a fully mechanized mining demolition face. The support system of this invention is safer, more efficient, more applicable, and greatly reduces manual labor intensity, making it highly scalable.