Double-column gantry type lifting machine with horizontal calibration auxiliary function

Abstract

The utility model discloses a double-column gantry type lifting machine with a horizontal calibration auxiliary function. The double-column gantry type lifting machine comprises a gantry, a sliding table mechanism, a supporting arm mechanism, a horizontal calibration auxiliary mechanism and a power unit. The supporting arm mechanism is connected with the sliding table mechanism through a fixing plate. The horizontal calibration auxiliary mechanism is rotationally connected with the supporting arm mechanism; the portal comprises a fixed pulley, a beam and stand columns arranged at the two ends of the beam respectively. The sliding table mechanism comprises a sliding piece and a sliding block; the supporting arm mechanism comprises a lifting column, a rotating shaft, a first-stage rotating arm, a second-stage telescopic arm and a movable shaft. The horizontal calibration auxiliary mechanism comprises a connecting rod, a movable arm, a horizontal rod and a calibration assembly; the power unit comprises a double-drum winch, and the output end of the double-drum winch is connected with the sliding piece through a steel wire rope and a fixed pulley. According to the utility model, the working intensity of personnel is reduced, the stress of the vehicle bottom frame is reduced, and the horizontal calibration of any laser sensor of different vehicles is assisted.

Description

Technical Field

[0001] The utility model relates to the technical field of lifts, in particular to a two-column gantry lift with a horizontal calibration assistance function. Background Art

[0002] The PRT (Personal Rapid Transit) rapid transit system consists of small driverless vehicles and exclusive lines. To ensure that there is no lateral collision during the automatic driving of the vehicle, laser sensors for detecting the distance between the vehicle body and the road edge are installed at both the front and rear ends of the vehicle. The left and right laser sensors on the same end are fixed near the center line of the vehicle body, and the line connecting the two is parallel to the horizontal line of the vehicle body. The correctness of the fixed position of the laser sensor will directly affect the accuracy of the collected data, thereby affecting the determination of the vehicle's lateral safety by the control system.

[0003] Currently, for the horizontal calibration of the laser sensors of PRT vehicles, an integrated tooling is used. The tooling adopts a steel frame structure, which is large in volume and heavy in weight. After the vehicle is lifted by a two-column gantry lift, the tooling is first lifted by a small scissor lift, and then manually lifted and adjusted to the accurate position, and then fixedly connected to the calibration holes of the vehicle bottom frame through screws.

[0004] Currently, there are problems in this process such as high labor intensity of personnel, large gravity continuously borne by the vehicle bottom frame, and multiple installations and removals of the threaded holes of the vehicle bottom frame. In addition, due to the use of an integrated structure tooling, for the situation where only a certain laser sensor needs to be calibrated, the entire frame structure also needs to be installed, and the labor intensity of personnel cannot be reduced. Considering that there will be slight machining deviations in the positions of the calibration holes of the vehicle bottom frames of different vehicles, the integrated tooling also has the problem of inflexible adjustment. Content of the Utility Model

[0005] To solve the above problems, the utility model provides a two-column gantry lift with a horizontal calibration assistance function, which is improved based on a gantry lift with a basic lifting function. By setting a horizontal calibration assistance mechanism, a flexible adjustable horizontal calibration reference is established, which greatly reduces the labor intensity of personnel while avoiding the problems of excessive force on the vehicle bottom frame and slipping of the threaded holes due to multiple installations and removals, and realizes the accurate horizontal calibration of the auxiliary laser sensor.

[0006] The utility model provides a two-column gantry lift with a horizontal calibration assistance function, and the specific technical solution is as follows:

[0007] It includes a gantry, a sliding table mechanism, a support arm mechanism, a horizontal calibration assistance mechanism and a power unit; the support arm mechanism is connected to the sliding table mechanism through a fixing plate; the horizontal calibration assistance mechanism is rotationally connected to the support arm mechanism;

[0008] The gantry includes columns and crossbeams. The columns are respectively arranged on the left and right sides of the crossbeam and are perpendicularly and fixedly connected to the crossbeam. Fixed pulleys are provided at the top and bottom inside the columns.

[0009] The sliding table mechanism includes a sliding member and sliders. The sliders are fixedly distributed on the outside of the sliding member, and the sliding member slides along the chute inside the column through the sliders.

[0010] The support arm mechanism includes a lifting column, a rotating shaft, a first-level rotating arm, a second-level telescopic arm, and a moving shaft. The first-level rotating arm is rotatably connected to the rotating shaft. The second-level telescopic arm is telescopically connected to the first-level rotating arm. The second-level telescopic arm is connected to the moving shaft through a spline and fixed with screws. The moving shaft is threadedly connected to the lifting column.

[0011] The horizontal calibration auxiliary mechanism includes a connecting rod, a movable arm, a horizontal rod, and a calibration component. The horizontal rod is rotatably connected to the movable arm through the connecting rod. The calibration component is arranged on the horizontal rod and slides along the calibration groove on the horizontal rod.

[0012] The power unit includes a double-drum winch. The output end of the double-drum winch is connected to the sliding member through a steel wire rope and a fixed pulley.

[0013] Further, a scissor-type stop component is provided on the moving shaft. The scissor-type stop component is fixed to the upper part of the moving shaft with screws. The scissor-type stop component includes a pair of crossed S-shaped clamping members and an elastic member. One end of the S-shaped clamping member is provided with internal threads. The scissor-type stop component is threadedly connected to the lifting column.

[0014] Further, an internal guide groove is provided at the other end of the first-level rotating arm connected to the moving shaft. One end of the second-level telescopic arm is placed in the internal guide groove of the first-level rotating arm and slides along the internal guide groove.

[0015] Further, through holes are provided at the other end of the second-level telescopic arm and at the connection end of the movable arm and the second-level telescopic arm. The moving shaft passes through the through holes of the second-level telescopic arm and the movable arm.

[0016] Self-lubricating copper sleeves fixed with screws are provided in the through holes at the connection end of the movable arm and the second-level telescopic arm. Self-lubricating copper sleeves with interference fit are provided in the through holes at the connection end of the movable arm and the horizontal rod.

[0017] Further, the rotating connection end of the second-level telescopic arm and the movable arm is an interlocking connection structure.

[0018] Furthermore, double-nut locking members are provided on both sides of the sliding member. The output end of the double-drum hoist is wound around a fixed pulley at the top of the column on the corresponding side through a steel wire rope, and is locked and connected to the sliding block through the double-nut locking member. After passing through the locking point, the steel wire rope is successively wound around a fixed pulley at the bottom and another set of fixed pulleys at the top, and is wound around the fixed pulley at the top of the other column along the cross beam, and is locked and connected to the corresponding sliding block through the double-nut locking member.

[0019] Furthermore, the sliding member is fixedly connected to the fixed plate. The rotating shaft passes through the through holes of the fixed plate and the first-level rotating arm. A thread is provided at the lower part of the rotating shaft, and the support arm mechanism is connected to the sliding table mechanism through a nut adapted to the thread.

[0020] Furthermore, the calibration assembly includes a calibration baffle, an insertion plate, a self-lubricating copper rod, and a U-shaped clamping plate;

[0021] The connecting rod passes through the through hole at one end of the movable arm connected to the horizontal rod and the guiding groove of the horizontal rod, and is fixedly connected through a bolt.

[0022] Furthermore, the self-lubricating copper rod connects the horizontal rod and the U-shaped clamping plate. The self-lubricating copper rod translates along the calibration groove, and both ends are fixed by split pins. A stud is provided at the lower end of the calibration baffle, and the stud passes through the through hole of the self-lubricating copper rod and is fixed by upper and lower nuts after determining the height of the calibration baffle. The insertion plate is fixedly connected to the calibration baffle through a trapezoidal groove.

[0023] Furthermore, a light-transmitting strip is left in the middle of the insertion plate, and a standard groove equal in height to the light-transmitting strip is provided on the calibration baffle.

[0024] The beneficial effects of the present utility model are as follows:

[0025] The present utility model provides a lifting power through a power unit, a sliding table mechanism, and a support arm mechanism. The sliding table mechanism is arranged in the gantry for sliding during the lifting process, eliminating the need for manual lifting tools and the vehicle bottom frame not bearing the gravity of the tooling.

[0026] The support arm mechanism adopts a multi-arm link mechanism, which has strong flexibility. Moreover, the support arm mechanism is also connected with a horizontal calibration auxiliary mechanism. By cooperating with the horizontal calibration auxiliary mechanism, the horizontal calibration of any laser sensor for different vehicles can be assisted to achieve the purpose that the installation of the laser sensor is parallel to the vehicle body horizontal line. Description of the Drawings

[0027] Figure 1 is a schematic diagram of the overall structure of the device of the present utility model.

[0028] Figure 2 is a schematic diagram of the relationship structure of the internal mechanism of the device of the present utility model.

[0029] Figure 3 It is a schematic structural diagram of the relationship between the horizontal calibration auxiliary mechanism and part of the support arm mechanism of the present utility model.

[0030] Description of reference numerals: 1 - gantry, 11 - column, 12 - cross beam, 13 - fixed pulley, 2 - sliding table mechanism, 21 - slider, 22 - ceramic slider, 3 - support arm mechanism, 31 - rotating shaft, 32 - first - level rotating arm, 33 - second - level telescopic arm, 34 - lifting column, 35 - moving shaft, 351 - scissor - type stop assembly, 3511 - S - type clamping part, 3512 - elastic part, 4 - horizontal calibration auxiliary mechanism, 41 - movable arm, 42 - horizontal rod, 421 - guiding groove, 422 - calibration groove, 43 - connecting rod, 44 - marking block, 45 - calibration assembly, 451 - calibration baffle, 452 - U - shaped clamping plate, 453 - inserting plate, 454 - self - lubricating copper rod, 51 - double - drum winch, 6 - vehicle body. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0032] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present utility model is usually placed, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship when the product of the present utility model is usually placed. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] Embodiment 1

[0035] Embodiment 1 of the present utility model discloses a double-column gantry lift with a horizontal calibration assistance function, as Figure 1 shown, and the specific structure is as follows:

[0036] The double-column gantry lift includes a gantry 1, a sliding table mechanism 2, a support arm mechanism 3, a horizontal calibration assistance mechanism 4, and a power unit; the support arm mechanism 3 is connected to the sliding table mechanism 2 through a fixing plate; the horizontal calibration assistance mechanism 4 is rotatably connected to the support arm mechanism 3;

[0037] In this embodiment, the power unit includes a double-drum winch 51;

[0038] The gantry 1 includes columns 11 and a cross beam 12. The columns 11 are respectively arranged on the left and right sides of the cross beam 12 and are vertically and fixedly connected to the cross beam 12. Fixed pulleys 13 are provided at the top and bottom inside the columns 11;

[0039] As Figure 2 shown, the sliding table mechanism 2 includes a sliding member 21 and sliders. The sliders are fixedly distributed on the outside of the sliding member 21, and the sliding member 21 slides along the chute inside the column 11 through the sliders;

[0040] The output end of the double-drum winch 51 is connected to the sliding member 21 through a steel wire rope and a fixed pulley 13;

[0041] As an embodiment, double-nut locking members are provided on both sides of the sliding member 21. The output end of the double-drum winch 51 is wound around the fixed pulley 13 at the top of the column 11 on the corresponding side through a steel wire rope and is locked and connected to the slider through the double-nut locking member. After passing through the locking point, the steel wire rope is successively wound around the fixed pulley 13 at the bottom and another set of fixed pulleys 13 at the top, and is wound around the fixed pulley 13 at the top of the other column 11 along the cross beam 12, and is locked and connected to the corresponding slider through the double-nut locking member.

[0042] As a preferred embodiment, the sliding member 21 is fixedly connected to the fixing plate. The rotating shaft 31 passes through the through holes of the fixing plate and the first-level rotating arm 32. A thread is provided at the lower part of the rotating shaft 31, and the support arm mechanism 3 is connected to the sliding table mechanism 2 through a nut adapted to the thread.

[0043] As a preferred embodiment, the support arm mechanism 3 includes a lifting column 34, a rotating shaft 31, a first-level rotating arm 32, a second-level telescopic arm 33, and a moving shaft 35;

[0044] Two sets of the support arm mechanism 3 are provided and are symmetrically structured with respect to the plane where the gantry 1 is located;

[0045] The first-level rotating arm 32 is rotatably connected to the rotating shaft 31. The second-level telescopic arm 33 is telescopically connected to the first-level rotating arm 32. The second-level telescopic arm 33 is connected to the moving shaft 35 by splines and fixed with screws. The moving shaft 35 is threadedly connected to the lifting column 34.

[0046] As a preferred embodiment, a scissor-type stop assembly 351 is provided on the moving shaft 35. The scissor-type stop assembly 351 is fixed to the upper part of the moving shaft 35 by screws. The scissor-type stop assembly 351 includes a pair of crossed S-shaped clamping members 3511 and an elastic member 3512. One end of the S-shaped clamping member 3511 is provided with internal threads. The scissor-type stop assembly 351 is threadedly connected to the lifting column 34.

[0047] Specifically, in this embodiment, the elastic member 3512 is a spring.

[0048] In the free state of the scissor-type stop assembly 351, due to the tension of the compressed spring, the internal threads at the arc head are engaged and locked with the external threads of the lifting column 34, and the height position of the lifting column 34 cannot be adjusted. By reducing the opening angle of the outer extension arms of the scissor-type stop assembly 351, the locking of the internal threads at the arc head to the external threads of the lifting column 34 can be released, so as to achieve the purpose of adjusting the height of the lifting column 34.

[0049] Considering the randomness of different vehicles parked in the lifting area, the double-column gantry lift can stably lift the vehicle by rotating the first-level rotating arm 32, telescoping the second-level telescopic arm 33, and lifting the lifting column 34.

[0050] As a preferred embodiment, an internal guide groove is provided at the other end of the first-level rotating arm 32 connected to the moving shaft 35. One end of the second-level telescopic arm 33 is placed in the internal guide groove of the first-level rotating arm 32 and slides along the internal guide groove.

[0051] As a preferred embodiment, a through hole is provided at the other end of the second-level telescopic arm 33. A through hole is provided at the connection end of the movable arm 41 and the second-level telescopic arm 33. The moving shaft 35 passes through the through holes of the second-level telescopic arm 33 and the movable arm 41.

[0052] As a preferred embodiment, a self-lubricating copper sleeve fixed by screws is provided in the through hole at the connection end of the movable arm 41 and the second-level telescopic arm 33. A self-lubricating copper sleeve with interference fit is provided in the through hole at the connection end of the movable arm 41 and the horizontal rod 42.

[0053] Such as Figure 3As shown, in this embodiment, the horizontal calibration auxiliary mechanism 4 includes a connecting rod 43, a movable arm 41, a horizontal rod 42, and a calibration assembly 45; the horizontal rod 42 is rotatably connected to the movable arm 41 through the connecting rod 43, and the calibration assembly 45 is arranged on the horizontal rod 42 and slides along the calibration groove 422 of the horizontal rod 42;

[0054] The connecting rod 43 is provided with a handle;

[0055] Specifically, the horizontal calibration auxiliary mechanism 4 and the calibration hole of the vehicle bottom frame are fixedly adhered through a marking block 44.

[0056] In this embodiment, the calibration assembly 45 includes a calibration baffle 451, a plug board 453, a self-lubricating copper rod 454, and a U-shaped clamping board 452;

[0057] The connecting rod 43 passes through the through hole at one end of the connecting part between the movable arm 41 and the horizontal rod 42 and the guiding groove 421 of the horizontal rod 42, and is fixedly connected by bolts.

[0058] As a preferred embodiment, the self-lubricating copper rod 454 connects the horizontal rod 42 and the U-shaped clamping board 452, the self-lubricating copper rod 454 translates along the calibration groove 422, and both ends are fixed by split pins. The lower end of the calibration baffle 451 is provided with a stud, the stud passes through the through hole of the self-lubricating copper rod 454, and is fixed by upper and lower nuts after the height of the calibration baffle 451 is determined. The plug board 453 and the calibration baffle 451 are fixedly connected through a trapezoidal groove.

[0059] As a preferred embodiment, a light-transmitting strip is left in the middle of the plug board 453, and the calibration baffle 451 is provided with a standard groove having the same height as the light-transmitting strip.

[0060] Based on the above lift, after the vehicle is lifted in place, the sliding table mechanism 2 and the support arm mechanism 3 are fixed in position under the action of the vehicle gravity. For the case of calibrating the left and right laser sensors on the same end of the calibrated vehicle body 6, first move the connecting rod 43 with a handle and the horizontal rod 42 respectively, so that the guiding groove 421 of the horizontal rod 42 passes through the reserved calibration holes adjacent to the vehicle bottom frame, and screw the marking block 44 into the calibration holes to respectively constrain the positional relationship between the two sides of the horizontal rod 42 and the vehicle bottom frame. Then, cooperate with the adjustment of the connecting rod 43 with a handle and the horizontal rod 42 to make the alignment holes on both sides of the horizontal rod 42 coaxial and the stepped surfaces coincide. Use the calibration block to pass through the alignment holes and paste it on the vehicle bottom. Since the line connecting the reserved alignment holes is parallel to the horizontal line of the vehicle body 6, at this time, the connecting line of the left and right horizontal rods 42 is a straight line and parallel to the horizontal line of the vehicle body 6. For the case of calibrating a single laser sensor, only need to move the connecting rod 43 with a handle and the horizontal rod 42 on the same side and close to each other, so that the guiding groove 421 of the horizontal rod 42 passes through two reserved calibration holes of the vehicle bottom frame, and screw the marking block 44 into the two calibration holes respectively to constrain the positional relationship between the horizontal rod 42 and the vehicle bottom frame, then the horizontal rod 42 can be made parallel to the horizontal line of the vehicle body 6.

[0061] Based on the lift structure described in this embodiment, adjust the light-transmitting strip of the insertion plate 453 to the theoretical height of the laser sensor emission source by rotating the calibration plate, move the calibration assembly 45 to a position 800 mm away from the laser sensor. First, adjust the angle of the laser sensor so that the light beam passes through the light-transmitting strip of the insertion plate 453 and hits the standard groove of the calibration plate, and then collect the value of the laser sensor, so that the difference between the converted distance value and 800 mm is within the allowable range, thus achieving the purpose of horizontally calibrating the laser sensor.

[0062] Embodiment 2

[0063] Embodiment 2 of the present utility model discloses a double-column gantry lift with a horizontal calibration auxiliary function, as Figure 1 shown, the specific structure is as follows:

[0064] The double-column gantry lift includes a gantry 1, a sliding table mechanism 2, a support arm mechanism 3, a horizontal calibration auxiliary mechanism 4 and a power unit; the support arm mechanism 3 is connected to the sliding table mechanism 2 through a fixing plate; the horizontal calibration auxiliary mechanism 4 is rotatably connected to the support arm mechanism 3;

[0065] In this embodiment, the power unit includes a double-drum winch 51;

[0066] The gantry 1 includes columns 11 and a cross beam 12. The columns 11 are respectively arranged on the left and right sides of the cross beam 12 and are vertically and fixedly connected to the cross beam 12. Fixed pulleys 13 are provided at the top and bottom inside the columns 11;

[0067] As Figure 2As shown, the sliding table mechanism 2 includes a sliding member 21 and sliders. The sliders are fixedly distributed on the outer side of the sliding member 21. The sliding member 21 slides along the chute inside the column 11 through the sliders.

[0068] The output end of the double-drum winch 51 is connected to the sliding member 21 through a steel wire rope and a fixed pulley 13.

[0069] As an embodiment, double-nut locking members are provided on both sides of the sliding member 21. The output end of the double-drum winch 51 is wound around the fixed pulley 13 at the top of the column 11 on the corresponding side through a steel wire rope, and is locked and connected to the slider through the double-nut locking member. After passing through the locking point, the steel wire rope is successively wound around the fixed pulley 13 at the bottom and the other set of fixed pulleys 13 at the top, wound around the fixed pulley 13 at the top of the other column 11 along the cross beam 12, and is locked and connected to the corresponding slider through the double-nut locking member.

[0070] As a preferred embodiment, the sliding member 21 is fixedly connected to the fixed plate. The rotating shaft 31 penetrates through the through holes of the fixed plate and the first-level rotating arm 32. A thread is provided at the lower part of the rotating shaft 31, and the support arm mechanism 3 is connected to the sliding table mechanism 2 through a nut adapted to the thread.

[0071] As a preferred embodiment, the support arm mechanism 3 includes a lifting column 34, a rotating shaft 31, a first-level rotating arm 32, a second-level telescopic arm 33, and a moving shaft 35.

[0072] Two sets of the support arm mechanism 3 are provided, and are symmetrically structured with respect to the plane where the gantry 1 is located.

[0073] The first-level rotating arm 32 is rotatably connected to the rotating shaft 31. The second-level telescopic arm 33 is telescopically connected to the first-level rotating arm 32. The second-level telescopic arm 33 is connected to the moving shaft 35 through a spline and fixed with a screw. The moving shaft 35 is threadedly connected to the lifting column 34.

[0074] As a preferred embodiment, a scissor-type stop assembly 351 is provided on the moving shaft 35. The scissor-type stop assembly 351 is fixed to the upper part of the moving shaft 35 with a screw. The scissor-type stop assembly 351 includes a pair of crossed S-shaped clamping members 3511 and an elastic member 3512. An internal thread is provided at one end of the S-shaped clamping member 3511. The scissor-type stop assembly 351 is threadedly connected to the lifting column 34.

[0075] Specifically, in this embodiment, the elastic member 3512 is a spring.

[0076] In the free state, due to the tension of the compressed spring, the internal thread of the arc head engages and locks with the external thread of the lifting column 34, and the height position of the lifting column 34 cannot be adjusted. By reducing the opening angle of the outstretched arms of the shear-type stop assembly 351, the locking of the internal thread of the arc head to the external thread of the lifting column 34 can be released, so as to achieve the purpose of adjusting the height of the left and right lifting columns 34.

[0077] Considering the randomness of different vehicles parked in the lifting area, by rotating the first-level rotating arm 32, telescoping the second-level telescopic arm 33, and lifting the lifting column 34, the double-column gantry lift can stably lift the vehicle.

[0078] As a preferred embodiment, the other end of the first-level rotating arm 32 connected to the moving shaft 35 is provided with an internal guiding groove, and one end of the second-level telescopic arm 33 is placed in the internal guiding groove of the first-level rotating arm 32 and slides along the internal guiding groove.

[0079] As a preferred embodiment, the other end of the second-level telescopic arm 33 is provided with a through hole, the connecting end of the movable arm 41 and the second-level telescopic arm 33 is provided with a through hole, and the moving shaft 35 penetrates through the through holes of the second-level telescopic arm 33 and the movable arm 41;

[0080] As a preferred embodiment, the rotatable connecting end of the second-level telescopic arm 33 and the movable arm 41 is an engaging connection structure;

[0081] Specifically, one end of the second-level telescopic arm 33 connected to the movable arm 41 is provided with a U-shaped opening, and the connecting end is in an arc-shaped structure; the movable arm 41 includes a first part and a second part, the first part and the second part are connected as an integral structure, one end of the first part is placed in the U-shaped opening of the second-level telescopic arm 33, the second part extends along the parallel direction of the first part, so that a spacing opening is formed between the first part and the second part, and the arc-shaped structure end above the second-level telescopic arm 33 is placed in the spacing opening, forming an engaging connection structure as a whole.

[0082] As a preferred embodiment, self-lubricating copper sleeves fixed by screws are provided in the through holes at the connecting end of the movable arm 41 and the second-level telescopic arm 33, and self-lubricating copper sleeves with interference fit are provided in the through holes at the connecting end of the movable arm 41 and the horizontal rod 42.

[0083] As Figure 3 shown, in this embodiment, the horizontal calibration auxiliary mechanism 4 includes a connecting rod 43, a movable arm 41, a horizontal rod 42, and a calibration assembly 45; the horizontal rod 42 is rotatably connected to the movable arm 41 through the connecting rod 43, and the calibration assembly 45 is arranged on the horizontal rod 42 and slides along the calibration groove 422 of the horizontal rod 42;

[0084] The connecting rod 43 is provided with a handle;

[0085] Specifically, the horizontal calibration auxiliary mechanism 4 is fixedly adhered to the calibration hole of the vehicle bottom frame through a marking block 44.

[0086] In this embodiment, the calibration assembly 45 includes a calibration baffle 451, a plug board 453, a self-lubricating copper rod 454, and a U-shaped clamping plate 452;

[0087] The connecting rod 43 passes through a through hole at one end of the movable arm 41 connected to the horizontal rod 42 and a guiding groove 421 of the horizontal rod 42, and is fixedly connected by bolts.

[0088] As a preferred embodiment, the self-lubricating copper rod 454 connects the horizontal rod 42 and the U-shaped clamping plate 452. The self-lubricating copper rod 454 translates along the calibration groove 422, and both ends are fixed by split pins. A stud is provided at the lower end of the calibration baffle 451. The stud passes through a through hole of the self-lubricating copper rod 454 and is fixed by upper and lower nuts after the height of the calibration baffle 451 is determined. The plug board 453 is fixedly connected to the calibration baffle 451 through a trapezoidal groove.

[0089] As a preferred embodiment, a light-transmitting strip is left in the middle of the plug board 453, and a standard groove with the same height as the light-transmitting strip is provided on the calibration baffle 451.

[0090] Based on the above lift, after the vehicle is lifted in place, the sliding table mechanism 2 and the support arm mechanism 3 are fixed in position under the action of the vehicle gravity. For the case of calibrating the left and right laser sensors at the same end of the calibrated vehicle body 6, first move the connecting rod 43 with a handle and the horizontal rod 42 respectively, so that the guiding groove 421 of the horizontal rod 42 passes through the reserved calibration holes adjacent to the vehicle bottom frame, and screw the marking block 44 into the calibration holes to respectively constrain the positional relationship between the two sides of the horizontal rod 42 and the vehicle bottom frame. Then, cooperate with adjusting the connecting rod 43 with a handle and the horizontal rod 42, so that the alignment holes on both sides of the horizontal rod 42 are coaxial and the stepped surfaces coincide. Use the calibration block to pass through the alignment holes and paste it on the vehicle bottom. Since the line connecting the reserved alignment holes is parallel to the horizontal line of the vehicle body 6, at this time, the connecting line of the left and right horizontal rods 42 is a straight line and is parallel to the horizontal line of the vehicle body 6. For the case of calibrating a single laser sensor, only need to move the connecting rod 43 with a handle and the horizontal rod 42 on the same side that are close to each other, so that the guiding groove 421 of the horizontal rod 42 passes through two reserved calibration holes of the vehicle bottom frame, and screw the marking block 44 into the two calibration holes respectively to constrain the positional relationship between the horizontal rod 42 and the vehicle bottom frame, then the horizontal rod 42 can be made parallel to the horizontal line of the vehicle body 6.

[0091] Based on the lift structure described in this embodiment, adjust the light-transmitting strip of the insertion plate 453 to the theoretical height of the laser sensor emission source by rotating the calibration plate. Move the calibration assembly 45 to a position 800 mm away from the laser sensor. First, adjust the angle of the laser sensor so that the light beam passes through the light-transmitting strip of the insertion plate 453 and hits the standard groove of the calibration plate. Then, collect the value of the laser sensor and make the difference between the converted distance value and 800 mm within the allowable range, so as to achieve the purpose of horizontally calibrating the laser sensor.

[0092] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A double-column gantry lift with a horizontal calibration auxiliary function, characterized in that: It includes a gantry, a slide mechanism, a support arm mechanism, a horizontal calibration auxiliary mechanism and a power unit; the support arm mechanism is connected to the slide mechanism through a fixed plate; the horizontal calibration auxiliary mechanism is rotatably connected to the support arm mechanism; The door frame includes a column and a crossbeam, the columns are respectively arranged at both ends of the crossbeam and are vertically fixedly connected to the crossbeam, and fixed pulleys are arranged at the top and bottom of the inner side of the column; The slide mechanism includes a slide and a slider, wherein the slider is fixedly distributed on the outside of the slide, and the slide slides along the slide groove inside the column through the slider; The support arm mechanism comprises a lifting column, a rotating shaft, a primary rotating arm, a secondary telescopic arm and a moving shaft; the primary rotating arm is rotatably connected to the rotating shaft, the secondary telescopic arm is telescopically connected to the primary rotating arm, the secondary telescopic arm is spline-connected to the moving shaft and fixed with screws; the moving shaft is threadedly connected to the lifting column; The horizontal calibration auxiliary mechanism comprises a connecting rod, a movable arm, a horizontal rod and a calibration component; the horizontal rod is rotatably connected to the movable arm through the connecting rod, and the calibration component is arranged on the horizontal rod and slides along the calibration groove of the horizontal rod; The power unit comprises a double-drum winch, and the output end of the double-drum winch is connected to the sliding member through a steel wire rope and a fixed pulley.

2. The double-column gantry lift with horizontal calibration auxiliary function according to claim 1, characterized in that: A scissor-type stop assembly is provided on the moving shaft, and the scissor-type stop assembly is fixed to the upper part of the moving shaft by screws. The scissor-type stop assembly includes a pair of crossed S-shaped clamps and an elastic component, one end of the S-shaped clamp is provided with an internal thread, and the scissor-type stop assembly is connected to the lifting column by threads.

3. The double-column gantry lift with horizontal calibration auxiliary function according to claim 1, characterized in that: The other end of the primary rotating arm connected to the moving shaft is provided with an inner guide groove, and one end of the secondary telescopic arm is placed in the inner guide groove of the primary rotating arm and slides along the inner guide groove.

4. The double-column gantry lift with level calibration auxiliary function according to claim 1, characterized in that: One end of the secondary telescopic arm connected to the movable arm is provided with a through hole, and the connecting end of the movable arm and the secondary telescopic arm is provided with a through hole, and the movable shaft passes through the through holes of the secondary telescopic arm and the movable arm; A self-lubricating copper sleeve fixed by a screw is provided in the through hole of the connecting end of the movable arm and the secondary telescopic arm, and a self-lubricating copper sleeve with an interference fit is provided in the through hole of the connecting end of the movable arm and the horizontal rod.

5. The double-column gantry lift with level calibration auxiliary function according to claim 4, characterized in that: The rotating connection ends of the secondary telescopic arm and the movable arm are of a bite-type connection structure.

6. The double-column gantry lift with level calibration auxiliary function according to claim 1, characterized in that: Double nut locking parts are provided on both sides of the slide. The output end of the double-drum winch is connected to the fixed pulley on the top of the side column through a steel wire rope, and is locked and connected to the slide block through a double nut locking part. After passing through the locking point, the steel wire rope is sequentially connected to the fixed pulley at the bottom and another set of fixed pulleys at the top, and is connected to the fixed pulley on the top of the other side column along the crossbeam, and is locked and connected to the corresponding slide block through a double nut locking part.

7. The double-column gantry lift with level calibration auxiliary function according to claim 1, characterized in that: The slide is fixedly connected to the fixed plate, the rotating shaft passes through the through hole of the fixed plate and the primary rotating arm, a thread is provided at the lower part of the rotating shaft, and the support arm mechanism is connected to the slide mechanism by a nut adapted to the thread.

8. The double-column gantry lift with level calibration auxiliary function according to claim 1, characterized in that: The calibration assembly includes a calibration baffle, a plug plate, a self-lubricating copper rod, and a U-shaped clamping plate; The connecting rod passes through the through hole at one end of the movable arm connected to the horizontal rod and the guide groove of the horizontal rod, and is fixedly connected by bolts.

9. The double-column gantry lift with level calibration auxiliary function according to claim 8, characterized in that: The self-lubricating copper rod connects the horizontal rod and the U-shaped positioning plate. The self-lubricating copper rod translates along the calibration groove, and both ends are fixed by cotter pins. A stud is provided at the lower end of the calibration baffle. The stud passes through the through hole of the self-lubricating copper rod and is fixed by upper and lower nuts after the height of the calibration baffle is determined. The plug plate is fixedly connected to the calibration baffle through a trapezoidal groove.

10. The double-column gantry lift with level calibration auxiliary function according to claim 8, characterized in that: A light-transmitting strip is left in the middle of the plug plate, and a standard groove having the same height as the light-transmitting strip is provided on the calibration baffle.

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