CN118058759A

CN118058759A - Lifting device and mobile DR check-out equipment

Info

Publication number: CN118058759A
Application number: CN202410329548.4A
Authority: CN
Inventors: 刘焕仁
Original assignee: Suzhou Hengersida Medical Technology Co ltd
Current assignee: Suzhou Hengersida Medical Technology Co ltd
Priority date: 2024-03-21
Filing date: 2024-03-21
Publication date: 2024-05-24

Abstract

The application discloses a lifting device and mobile DR inspection equipment, and relates to the technical field of DR inspection equipment. The lifting device comprises a stand column, a sliding seat and a counterweight spring, wherein the sliding seat is connected with the stand column in a sliding manner along the up-down direction, and is used for installing a telescopic arm of mobile DR inspection equipment; the upper end of the upright post is rotatably provided with a winding wheel, one end of the counterweight spring is connected with the lower end of the upright post, and the other end of the counterweight spring extends upwards; the winding wheel winds the traction rope, and both ends of the traction rope are drooping; one end of the traction rope is connected with the sliding seat, and the other end of the traction rope is connected with the upper end of the counterweight spring; when the slide seat moves downward, the tensile deformation of the weight spring increases. Compared with the setting balancing weight, the elasticity of the balancing weight spring replaces the gravity of the balancing weight, and the weight of the balancing weight spring can be set lighter, so that the total weight of the mobile DR inspection device is reduced, and the whole movement of the device is pushed by operators more conveniently.

Description

Lifting device and mobile DR check-out equipment

Technical Field

The application relates to the technical field of DR (digital radiography) inspection equipment, in particular to a lifting device and mobile DR inspection equipment.

Background

DR examination apparatus is a kind of apparatus that allows a doctor to make a judgment as to whether or not a patient is ill on an examined site by emitting X-rays to the examined site of a patient for photographing the examined site.

The related art discloses a portable DR check-out set, including the base, the base is provided with the stand, and the stand is provided with the sliding seat along upper and lower direction slip, and the sliding seat is provided with flexible arm, and flexible arm is provided with the bulb subassembly, and the bulb subassembly is used for to patient's transmission X ray. When the device is used, after the base is pushed to a position close to a patient, in the process that an operator forcefully moves the bulb assembly, the telescopic arm automatically stretches and the sliding seat automatically slides, so that the bulb assembly can be moved to a position to be inspected of the patient.

For the related art, because the weight of the ball tube assembly is heavier, in order to facilitate the upward movement of the ball tube assembly, the weight block is generally required to be added at the upright post, the weight block is connected with a rope, and the rope bypasses the fixed pulley at the upper end position of the upright post and is connected with the sliding seat so that the weight block balances the total weight of the whole body formed by the ball tube assembly, the telescopic arm and the sliding seat. However, the added weight results in a heavy total weight of the DR inspection device, which makes the device difficult to move, and thus needs to be improved.

Disclosure of Invention

The application aims to provide a lifting device and a mobile DR inspection device, wherein a counterweight block is replaced by a counterweight spring so as to reduce the total weight of the DR inspection device, thereby facilitating the movement of the DR inspection device.

In a first aspect, the present application provides a lifting device, which adopts the following technical scheme:

The lifting device comprises a stand column, a sliding seat and a counterweight spring, wherein the sliding seat is connected with the stand column in a sliding manner along the up-down direction, and is used for installing a telescopic arm of mobile DR inspection equipment; the upper end of the upright post is rotatably provided with a winding wheel, one end of the counterweight spring is connected with the lower end of the upright post, and the other end of the counterweight spring extends upwards; the winding wheel is wound with a traction rope, and both ends of the traction rope are drooping; one end of the traction rope is connected with the sliding seat, and the other end of the traction rope is connected with the upper end of the counterweight spring; when the slide seat moves downward, the tensile deformation of the weight spring increases.

Through adopting above-mentioned technical scheme, the elasticity effect that produces when the counter weight spring takes place tensile deformation can balance the sliding seat and with the flexible arm that the sliding seat links to each other and the partly of the total weight of bulb subassembly to the effect that the counter weight spring played the balancing weight, thereby the operating personnel of being convenient for removes the bulb subassembly along upper and lower direction. Compared with the setting balancing weight, the weight of the balancing weight spring can be lighter by utilizing the elasticity of the balancing weight spring to replace the gravity of the balancing weight, so that the total weight of the mobile DR inspection device is reduced, and the whole movement of the device is pushed by operators more conveniently.

Optionally, the peripheral wall of the winding wheel is sequentially provided with a counterweight winding part and a sliding seat winding part along the axial direction of the winding wheel, and the traction rope is spirally wound on the sliding seat winding part and the counterweight winding part; one end of the traction rope, which is close to the counterweight spring, is positioned at one end of the counterweight winding part, which is far away from the sliding seat winding part, and one end of the traction rope, which is close to the sliding seat, is positioned at one end of the sliding seat winding part, which is far away from the counterweight winding part; the diameter of the winding wheel at the position of the counterweight winding part is gradually reduced along the axial direction of the winding wheel in the direction away from the sliding seat winding part.

By adopting the technical scheme, when the sliding seat moves downwards, the part of the traction rope positioned at the sliding seat rolling part is unreeled, and the part of the traction rope positioned at the counterweight rolling part is rolled; in the process of increasing the tensile deformation of the counterweight spring, the tension of the counterweight spring to the winding wheel through the traction rope is increased, and the acting force arm is reduced, so that the counterweight spring can keep the acting torque of the counterweight spring to the winding wheel relatively constant through the traction rope, and the sliding seat can be kept static at any position conveniently, so that an operator can operate the equipment relatively conveniently.

Optionally, spiral winding grooves are formed in the circumferential walls of the winding wheel at the positions of the counterweight winding part and the sliding seat winding part along the circumferential direction of the winding wheel, the spiral winding grooves at the positions of the counterweight winding part and the sliding seat winding part have the same rotation direction, and the two spiral winding grooves are mutually communicated; the spiral winding groove is used for accommodating a single-strand traction rope.

Through adopting above-mentioned technical scheme, spiral rolling groove is used for holding single haulage rope to supply to lead the rolling of haulage rope, thereby be favorable to reducing the possibility that the haulage rope takes place to overlap, in order to guarantee that the action arm of force of counter weight spring to the rolling wheel changes along with the change of the deflection of counter weight spring gradually, thereby be favorable to guaranteeing that the action moment of torsion of counter weight spring to the rolling wheel remains invariable relatively.

Optionally, the counterweight spring comprises a spring main body and connecting seats respectively arranged at two ends of the spring main body, a spiral matching groove is formed in the peripheral wall of each connecting seat along the circumferential direction of each connecting seat, and the spiral matching groove is in spiral matching with one corresponding end of the spring main body; the connecting seat at the lower end position is connected with the upright post, and the connecting seat at the upper end position is connected with the traction rope; the connecting seat is fixedly connected with the spring main body.

By adopting the technical scheme, the spring main body is connected with the upright post or the traction rope through the connecting seat, so that the stability of the installation of the spring main body is improved; the spring main body is in spiral fit with the spiral fit groove, so that the contact area between the connecting seat and the spring main body is increased, and meanwhile, the movement of the connecting seat relative to the spring main body along the length direction of the spring main body can be limited, and the stability of connection between the connecting seat and the spring main body is improved.

Optionally, the connecting seat that is located the lower extreme position department of spring main part is provided with the regulation screw along upper and lower direction, the inside wall threaded connection of regulation screw has adjusting screw, adjusting screw rotates around self axis and is connected with the stand.

By adopting the technical scheme, the adjusting screw is rotated, and the position of the corresponding connecting seat relative to the upright post can be adjusted, so that the position of the spring main body relative to the upright post is adjusted, and the maximum or minimum deformation of the spring main body can be adjusted according to the weight of the bulb assembly or the telescopic arm.

Optionally, the lower extreme of stand is provided with the guide bar that upwards extends, is located the connecting seat of the lower extreme position department of spring main part is provided with along upper and lower direction with guide bar sliding fit's guiding hole.

Through adopting above-mentioned technical scheme, the guide bar slides with the guiding hole and cooperates, can restrict the rotation of connecting seat and spring main part relative to the stand to be convenient for rotate adjusting screw, can improve the gliding stability of spring main part relative to the stand simultaneously.

Optionally, a mounting frame is arranged at the upper end of the counterweight spring, and a movable pulley is rotatably arranged on the mounting frame; one end of the traction rope, which is close to the counterweight spring, bypasses the movable pulley and is connected with the upper end of the upright post.

Through adopting above-mentioned technical scheme, the haulage rope passes through movable pulley and links to each other with the counter weight spring, is favorable to reducing the size of the deformation volume that the counter weight spring took place tensile deformation at the in-process that the sliding seat moved along the upper and lower direction to be favorable to reducing the variation range of the elasticity of counter weight spring, thereby be convenient for operating personnel to control the bulb subassembly that links to each other with the sliding seat through the telescopic arm.

Optionally, the mounting bracket rotates and sets up in the counter weight spring, the axial of the axis of rotation of mounting bracket sets up along the upper and lower direction.

Through adopting above-mentioned technical scheme, the in-process of reel rolling or unreeling haulage rope, the mounting bracket can be automatic rotatory according to the position of haulage rope to supply haulage rope and movable pulley stable cooperation, reduce the possibility that the haulage rope breaks away from the movable pulley.

Optionally, the sliding seat is provided with a first guide wheel and a second guide wheel in a rotating manner along two sides of the width direction of the sliding seat, and the upright post is provided with a guide groove for accommodating the first guide wheel and the second guide wheel along the up-down direction; the periphery wall of the first guide wheel is abutted with the inner side wall of one side of the guide groove along the width direction of the guide groove, and the periphery wall of the second guide wheel is abutted with the bottom wall of the guide groove.

Through adopting above-mentioned technical scheme, first leading wheel and second leading wheel all with the inner wall butt of guide way, can restrict the sliding seat along the removal of the width direction and the depth direction of guide way to be favorable to improving sliding stability of sliding seat.

In a second aspect, the present application provides a mobile DR inspection apparatus, which adopts the following technical scheme:

A mobile DR inspection device comprises a base, a telescopic arm, a bulb tube assembly and the lifting device; the stand links to each other with the base, one of them end of flexible arm links to each other with the sliding seat, the bulb subassembly links to each other with the one end that flexible arm kept away from the sliding seat.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The elastic force generated when the counterweight spring is stretched and deformed can balance the sliding seat and a part of the total weight of the telescopic arm and the ball tube assembly connected with the sliding seat so as to enable the counterweight spring to play a role of a counterweight; compared with the counterweight block, the weight of the counterweight spring can be set lighter by replacing the gravity of the counterweight block by utilizing the elasticity of the counterweight spring, so that the total weight of the mobile DR inspection device is reduced, and the whole movement of the device is more convenient for operators to push;

2. The winding wheel is positioned at the counterweight winding part and is in a round table shape, in the process of increasing the stretching deformation of the counterweight spring, the tension of the counterweight spring to the winding wheel through the traction rope is increased, and the acting force arm is reduced, so that the acting torque of the counterweight spring to the winding wheel through the traction rope is kept relatively constant, the sliding seat is kept stationary at any position conveniently, and related operation of an operator on equipment is facilitated;

3. The spring main body is in spiral fit with the spiral fit groove, so that the contact area between the connecting seat and the spring main body is increased, and meanwhile, the movement of the connecting seat relative to the spring main body along the length direction of the spring main body can be limited, and the stability of connection between the connecting seat and the spring main body is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of a mobile DR inspection apparatus of the present application.

Fig. 2 is a schematic sectional view for showing the structure of the lifting device.

Fig. 3 is an exploded view for showing a connection structure between the weight spring and the sliding seat.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is an exploded view for showing a connection structure between the sliding seat and the pillar.

In the figure, 1, a base; 2. a telescoping arm; 3. a bulb assembly; 4. a column; 41. an upper bracket; 411. a winding wheel; 4111. a traction rope; 4112. a counterweight winding part; 4113. a slide seat winding part; 4114. a spiral winding groove; 412. a fixed pulley; 42. a tube body; 421. a sliding groove; 4211. a guide groove; 43. a lower bracket; 5. a sliding seat; 51. a connecting plate; 511. a first guide wheel; 512. a second guide wheel; 6. a counterweight spring; 61. a spring body; 62. a connecting seat; 621. a spiral mating groove; 622. a mounting frame; 6221. a rotation hole; 6222. a movable pulley; 623. a connection hole; 624. a connecting bolt; 6241. a fixing nut; 625. adjusting the screw hole; 626. a guide hole; 7. a connection assembly; 71. adjusting a screw; 72. a guide rod.

Detailed Description

The present application will be described in further detail with reference to fig. 1 to 5.

A mobile DR inspection apparatus, referring to fig. 1 and 2, comprises a base 1, a telescopic arm 2, a bulb assembly 3, and a lifting device, the lifting device comprising a column 4 and a sliding seat 5; the upright post 4 comprises an upper bracket 41, a pipe body 42 and a lower bracket 43, wherein the upper bracket 41 is fixedly connected with the inner side wall of the upper end of the pipe body 42, and the lower bracket 43 is fixedly connected with the inner side wall of the lower end of the pipe body 42. The bulb assembly 3 is rotationally connected with one end of the telescopic arm 2, one end of the telescopic arm 2 away from the bulb assembly 3 is fixedly connected with the sliding seat 5, and the sliding seat 5 is slidably connected with the pipe body 42 along the up-down direction. The lower bracket 43 is rotatably connected with the base 1 through a bearing; under the mutual cooperation of the telescopic arm 2 and the sliding seat 5, an operator holds the bulb assembly 3 by hand, and can forcefully lift the bulb assembly 3 or enable the bulb assembly 3 to move in a horizontal plane so as to move the bulb assembly 3 to a part to be inspected of a patient.

Referring to fig. 2 and 3, the lifting device further includes a weight spring 6, where the weight spring 6 includes a spring main body 61 and two connection seats 62, the two connection seats 62 are cylindrical, and spiral matching grooves 621 are formed in peripheral walls of the two connection seats 62 along the circumferential direction of the connection seat 62, respectively; one end of the spring main body 61 is in screw fit with the screw fit groove 621 of one of the connection seats 62, the other end of the spring main body 61 is in screw fit with the screw fit groove 621 of the other connection seat 62, and the end wall of each connection seat 62 is welded and fixed with the corresponding end of the spring main body 61. A connection assembly 7 is disposed between one of the connection seats 62 and the lower bracket 43 to connect one end of the spring body 61 to the lower bracket 43, and the other end of the spring body 61 extends upward.

Referring to fig. 3, an upper end wall of the connection seat 62 located at an upper position is provided with a mounting frame 622, the mounting frame 622 is provided with a rotation hole 6221 penetrating in an up-down direction, and the corresponding connection seat 62 is provided with a connection hole 623 penetrating in the up-down direction; a connecting bolt 624 is inserted into the rotating hole 6221, a rod portion of the connecting bolt 624 is inserted into the connecting hole 623, the connecting bolt 624 is connected with a fixing nut 6241 in a threaded manner, and the fixing nut 6241 is used for abutting against the lower end wall of the connecting seat 62 so that the mounting frame 622 can rotate relative to the connecting seat 62. The mounting frame 622 is rotatably connected with movable pulleys 6222 through pin shafts, and the number of the movable pulleys 6222 is two.

Referring to fig. 2 and 3, the upper bracket 41 is rotatably provided with a take-up pulley 411 and a fixed pulley 412 through a bearing, and the fixed pulley 412 is positioned below the take-up pulley 411; the peripheral wall of the winding wheel 411 is wound with a traction rope 4111, the two ends of the traction rope 4111 are drooped, one end of the traction rope 4111 is connected with the sliding seat 5 in a binding mode, the other end of the traction rope 4111 bypasses one movable pulley 6222 and bypasses the fixed pulley 412 and the other movable pulley 6222, and the corresponding end of the traction rope 4111 is fixed with the upper bracket 41 in a binding mode.

Referring to fig. 4, a counterweight winding portion 4112 and a slider winding portion 4113 are sequentially provided along the axial direction of the winding wheel 411 on the peripheral wall of the winding wheel 411; the peripheral wall of the winding wheel 411 at the position of the sliding seat winding part 4113 and the peripheral wall of the counterweight winding part 4112 are provided with spiral winding grooves 4114 along the circumferential direction of the winding wheel 411, and the two spiral winding grooves 4114 are communicated with each other and have the same rotation direction.

Referring to fig. 3 and 4, a portion of the hauling rope 4111 is spirally received in one of the spiral winding grooves 4114, and another portion of the hauling rope 4111 is spirally received in the other spiral winding groove 4114; one end of the traction rope 4111, which is close to the movable pulley 6222, is extended downwards from a position corresponding to one end of the counterweight winding portion 4112, which is far away from the sliding seat winding portion 4113, and one end of the traction rope 4111, which is close to the sliding seat 5, is extended downwards from a position corresponding to one end of the sliding seat winding portion 4113, which is far away from the counterweight winding portion 4112. When the sliding seat 5 moves downwards, the winding wheel 411 rotates to allow the winding wheel 411 to be located at the position of the sliding seat winding portion 4113 to place the winding traction rope 4111, and meanwhile, the winding wheel 411 is located at the position of the counterweight winding portion 4112 to wind the traction rope 4111, so that the connecting seat 62 located at the upper position can move upwards to enable the spring main body 61 to stretch and deform. In this embodiment, the spiral winding groove 4114 is only used to accommodate the single-strand pulling rope 4111.

Referring to fig. 3 and 4, the diameter of the take-up roller 411 at the position of the weight take-up portion 4112 gradually decreases in the axial direction of the take-up roller 411 in the direction away from the slider take-up portion 4113. In the process of winding the traction rope 4111 into the spiral winding groove 4114 at the position of the counterweight winding part 4112, the tension of the spring main body 61 to the winding wheel 411 through the traction rope 4111 is gradually increased, and the acting force arm of traction to the winding wheel 411 is gradually reduced, so that the change range of the torque of the spring main body 61 to the winding wheel 411 through the traction rope 4111 is reduced, and the magnitude of the acting force for enabling the sliding seat 5 to move downwards or upwards is reduced, so that the bulb assembly 3 is moved conveniently. In this embodiment, the diameter of the winding wheel 411 at the position of the sliding seat winding portion 4113 gradually decreases along the axial direction of the winding wheel 411 toward the position far away from the counterweight winding portion 4112, so as to further facilitate the vector sum of the torque borne by the winding wheel 411 to always approach zero, so that the sliding seat 5 can be kept stationary at any position, and further facilitate the operation of the ball tube assembly 3; in another embodiment, the winding wheel 411 may be cylindrical at the sliding winding position.

Referring to fig. 3, the connection assembly 7 includes an adjusting screw 71 and a guide rod 72; the connecting seat 62 located below is provided with an adjusting screw hole 625 and a guiding hole 626 in a penetrating manner along the up-down direction, the adjusting screw 71 is in threaded fit with the adjusting screw hole 625, and the guiding rod 72 is in sliding fit with the guiding hole 626. The lower end of the adjusting screw 71 is rotatably connected with the lower bracket 43 around the axis of the adjusting screw 71, and the lower end of the guide rod 72 is fixedly connected with the lower bracket 43. The adjusting screw 71 is rotated to adjust the position of the corresponding connecting seat 62, so as to adjust the distance between the lower end of the spring body 61 and the lower bracket 43, and thus the initial distance between the upper end of the spring body 61 and the lower bracket 43, so as to adjust the maximum and minimum deformation of the spring body 61.

Referring to fig. 5, a connection plate 51 is fixedly installed at one side of the sliding seat 5 adjacent to the pipe body 42; the side wall of the side of the tube body 42 near the sliding seat 5 is provided with a sliding groove 421 in a penetrating manner along the downward direction, and the connecting plate 51 is positioned in the sliding groove 421. The slide groove 421 has guide grooves 4211 formed in inner side walls on both sides of the connecting plate 51 in the width direction, and the guide grooves 4211 are formed in the up-down direction. The positions of the connecting plate 51 on both sides in the width direction of the connecting plate 51 are rotatably connected with a first guide wheel 511 and a second guide wheel 512 through bearings; the first guide wheel 511 and the second guide wheel 512 are both located in the corresponding guide groove 4211, and the peripheral wall of the first guide wheel 511 is abutted with the inner side wall of the guide groove 4211 along the width direction of the guide groove 4211 and close to one side of the sliding seat 5, and the peripheral wall of the second guide wheel 512 is abutted with the bottom wall of the guide groove 4211, so that the sliding stability of the sliding seat 5 is improved. In another embodiment, the first guiding wheel 511 and the second guiding wheel 512 may also be directly rotatably mounted on the sliding seat 5.

The implementation principle of the embodiment of the application is as follows:

When the ball tube assembly 3 moves downwards, the winding wheel 411 winds one end of the traction rope 4111, which is close to the spring main body 61, the tensile deformation of the spring main body 61 is increased, and the acting force arm of the spring main body 61 on the winding wheel 411 through the traction rope 4111 is reduced, so that the vector sum of the torque borne by the winding wheel 411 can be reduced to zero, the spring main body 61 can play a role of a balancing weight, namely the spring main body 61 replaces the balancing weight, so that the total weight of the equipment main body is reduced, and the equipment can be pushed by an operator conveniently.

The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. A lifting device, characterized in that: the device comprises an upright post (4), a sliding seat (5) and a counterweight spring (6), wherein the sliding seat (5) is connected with the upright post (4) in a sliding manner along the up-down direction, and the sliding seat (5) is used for installing a telescopic arm (2) of mobile DR inspection equipment; the upper end of the upright post (4) is rotatably provided with a winding wheel (411), one end of the counterweight spring (6) is connected with the lower end of the upright post (4), and the other end of the counterweight spring (6) extends upwards; the winding wheel (411) is wound with a traction rope (4111), and two ends of the traction rope (4111) are arranged in a sagging manner; one end of the haulage rope (4111) is connected with the sliding seat (5), and the other end of the haulage rope (4111) is connected with the upper end of the counterweight spring (6); when the slide seat (5) moves downward, the tension deformation of the weight spring (6) increases.

2. The lifting device of claim 1, wherein: the peripheral wall of the winding wheel (411) is axially provided with a counterweight winding part (4112) and a sliding seat winding part (4113) in sequence along the winding wheel (411), and the traction rope (4111) is spirally wound on the sliding seat winding part (4113) and the counterweight winding part (4112); one end of the traction rope (4111) close to the counterweight spring (6) is located at one end of the counterweight winding part (4112) far away from the sliding seat winding part (4113), and one end of the traction rope (4111) close to the sliding seat (5) is located at one end of the sliding seat winding part (4113) far away from the counterweight winding part (4112); the diameter of the winding wheel (411) at the position of the counterweight winding part (4112) gradually decreases along the axial direction of the winding wheel (411) towards the direction far away from the sliding seat winding part (4113).

3. The lifting device of claim 2, wherein: the circumference walls of the winding wheel (411) at the positions of the counterweight winding part (4112) and the sliding seat winding part (4113) are respectively provided with a spiral winding groove (4114) along the circumference direction of the winding wheel (411), the spiral directions of the spiral winding grooves (4114) at the positions of the counterweight winding part (4112) and the sliding seat winding part (4113) are the same, and the two spiral winding grooves (4114) are mutually communicated; the spiral winding groove (4114) is used for accommodating a single-strand traction rope (4111).

4. The lifting device of claim 1, wherein: the counterweight spring (6) comprises a spring main body (61) and connecting seats (62) respectively arranged at two ends of the spring main body (61), a spiral matching groove (621) is formed in the peripheral wall of the connecting seat (62) along the periphery of the connecting seat (62), and the spiral matching groove (621) is in spiral matching with one end of the spring main body (61); the connecting seat (62) at the lower end position is connected with the upright post (4), and the connecting seat (62) at the upper end position is connected with the traction rope (4111); the connecting seat (62) is fixedly connected with the spring main body (61).

5. The lifting device of claim 4, wherein: the connecting seat (62) located at the lower end position of the spring main body (61) is provided with an adjusting screw hole (625) along the up-down direction, the inner side wall of the adjusting screw hole (625) is in threaded connection with an adjusting screw (71), and the adjusting screw (71) is rotationally connected with the upright post (4) around the axis of the adjusting screw.

6. The lifting device of claim 5, wherein: the lower end of the upright post (4) is provided with a guide rod (72) extending upwards, and a connecting seat (62) positioned at the lower end of the spring main body (61) is provided with a guide hole (626) in sliding fit with the guide rod (72) along the up-down direction.

7. The lifting device of claim 1, wherein: the upper end of the counterweight spring (6) is provided with a mounting frame (622), and the mounting frame (622) is rotatably provided with a movable pulley (6222); one end of the hauling rope (4111) close to the counterweight spring (6) bypasses the movable pulley (6222) and is connected with the upper end of the upright post (4).

8. The lifting device of claim 7, wherein: the installation frame (622) is rotatably arranged on the counterweight spring (6), and the axial direction of the rotating shaft of the installation frame (622) is arranged along the up-down direction.

9. The lifting device of claim 1, wherein: the sliding seat (5) is provided with a first guide wheel (511) and a second guide wheel (512) in a rotating manner along the two sides of the width direction of the sliding seat, and the upright post (4) is provided with a guide groove (4211) for accommodating the first guide wheel (511) and the second guide wheel (512) along the up-down direction; the peripheral wall of the first guide wheel (511) is in contact with the inner side wall of the guide groove (4211) on one side in the width direction of the guide groove (4211), and the peripheral wall of the second guide wheel (512) is in contact with the bottom wall of the guide groove (4211).

10. A mobile DR inspection apparatus, characterized by: comprising a base (1), a telescopic arm (2), a bulb assembly (3) and a lifting device according to any one of claims 1-9; the upright post (4) is connected with the base (1), and the bulb tube assembly (3) is connected with the lifting seat.