Vehicle-mounted telescopic ladder

Abstract

The present application relates to a kind of vehicle-mounted telescopic ladders, belong to the field of vehicle-mounted assembly fittings, solve the problem of large area occupied by existing vehicle-mounted ladders.A kind of vehicle-mounted telescopic ladders includes shell, rigid chain mechanism, section ladder, connecting rod and drive mechanism;The section ladder is provided with multiple, it is parallelly arranged in the shell, the output end of the rigid chain mechanism is connected with the section ladder, adjacent two section ladders are connected by connecting rod, and adjacent two section ladders can relatively slide, the drive mechanism can drive the rigid chain mechanism to drive section ladder to realize uplink or downlink movement.The present application makes the section ladder relatively slide between parallel arrangement to make the section ladder be able to extend and retract, reduce the problem of large area occupied by traditional fixed length ladder.

Description

Technical Field

[0001] This invention relates to the field of vehicle assembly accessories technology, and in particular to a vehicle-mounted telescopic ladder. Background Technology

[0002] Special or unique vehicle bodies require personnel to climb onto the roof to perform tasks during assembly or testing. Traditional fixed vehicle ladders are located on the outside of the vehicle body (usually at the rear or side), but this type of ladder has the following limitations:

[0003] 1. Currently, due to the need for special vehicle bodies to meet the height clearance requirements of highways, railways, etc., the traditional special vehicle bodies with specially designed fixed ladders have corresponding length limitations, which cannot meet the needs of some high-height scenarios;

[0004] 2. Fixed vehicle ladders occupy vehicle space and become part of the vehicle's external dimensions, increasing the overall size of the special vehicle body. If the structure of the fixed vehicle ladder is not properly designed, it will affect the vehicle's departure angle and other performance indicators, leading to potential hazards during vehicle operation.

[0005] 3. After the special vehicle body has been assembled and debugged, if the vehicle ladder is used at a low rate during the mission, it still occupies the space of the whole vehicle, resulting in low space utilization and low mission efficiency.

[0006] 4. If the original fixed ladder is not conveniently located for personnel to climb after the vehicle body structure is adjusted, it will make it difficult for personnel to access the vehicle and make it more difficult for them to maintain the vehicle on the roof. Summary of the Invention

[0007] Based on the above analysis, the present invention aims to provide a vehicle-mounted telescopic ladder to solve the problem of the large area occupied by existing vehicle-mounted ladders.

[0008] The objective of this invention is mainly achieved through the following technical solutions:

[0009] A vehicle-mounted telescopic ladder includes a housing, a rigid chain mechanism, segmented ladders, connecting rods, and a drive mechanism. Multiple segmented ladders are arranged parallel to each other within the housing. The output end of the rigid chain mechanism is connected to each segmented ladder. Adjacent segmented ladders are connected by connecting rods and can slide relative to each other. The drive mechanism drives the rigid chain mechanism to move the segmented ladders upwards or downwards.

[0010] Furthermore, the segmented ladder includes protrusions, grooves, and side plates; side plates are provided on both sides of the segmented ladder.

[0011] Furthermore, a groove is provided on one side of the side plate, and a protrusion is provided on the opposite side, the protrusion engaging with the groove.

[0012] Furthermore, the segmented ladder also includes a slider, a slider groove, and a clamping structure; the slider groove is disposed on the side plate, the slider is disposed in the slider groove, and the slider is slidably connected to the slider groove.

[0013] Furthermore, the rigid chain mechanism includes an output shaft, a guide wheel, a drive wheel, chain links, and a rigid chain.

[0014] Furthermore, the drive mechanism includes a connecting sleeve, a drive handle, a rocker arm, and a flat key; one end of the connecting sleeve is connected to the output shaft of the rigid chain mechanism via the flat key, and the other end is externally connected to the drive handle and the rocker arm.

[0015] Furthermore, it also includes a locking device, which is disposed inside the housing and is used to fix the tarpaulin hanger on the vehicle body to the telescopic ladder.

[0016] Furthermore, the housing also includes a pedal, which is disposed on one side of the housing.

[0017] Furthermore, it also includes the ladder head.

[0018] Furthermore, the ladder head and the segmented ladder are detachably connected.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] The present invention relates to a vehicle-mounted telescopic ladder, comprising a housing, a rigid chain mechanism, segmented ladders, connecting rods, and a drive mechanism. Multiple segmented ladders are arranged parallel to each other within the housing. The rigid chain mechanism is connected to the nearest segmented ladder. Adjacent segmented ladders are connected by connecting rods and can slide relative to each other. The drive mechanism drives the rigid chain mechanism to move the segmented ladders vertically upwards or downwards. The telescopic ladder structure of the present invention abandons the traditional fixed-size ladder form, dividing a fixed-length ladder into multiple smaller segmented ladders. The shortening of the segments achieves a compact storage effect, occupying little space. The extension of the segments meets the height requirements for performing tasks and facilitates maintenance by personnel, avoiding the need to climb the ladder onto the vehicle during maintenance.

[0021] The segmented ladder of this invention includes protrusions, grooves, and side plates. Each segmented ladder has side plates on both sides, allowing for contact and connection between the side plates of adjacent segments. Each side plate has a groove on one short side and a protrusion on the opposite short side. The protrusion of the segmented ladder engages with the groove of its adjacent segmented ladder, allowing for relative sliding movement. In other words, the protrusion of the segmented ladder can engage with the groove of its adjacent segmented ladder, limiting the movement of adjacent segments and preventing misalignment or separation. This achieves only longitudinal sliding movement, ensuring worker safety while climbing the ladder and limiting space usage, preventing future operational difficulties due to insufficient space.

[0022] The segmented ladder of this invention also includes a slider, a slider groove, and a clamping structure. The slider groove is longitudinally arranged on the side plate of the segmented ladder, and the slider is disposed in the slider groove and slidably connected to the slider groove. A connecting rod is disposed on the side of two adjacent segmented ladders, and the two ends of the connecting rod correspond to the slider grooves of the two adjacent segmented ladders, respectively. The two ends of the connecting rod are provided with through holes, and the clamping structure passes through the through holes at both ends of the connecting rod and is fixedly connected to the slider, so that the through holes at both ends of the connecting rod are hinged to the clamping structure. When the drive mechanism drives the first segmented ladder at the nearest end to move upward, the slider on it drags the connecting rod, allowing the segmented ladder to extend sequentially under the drive of the drive mechanism. When it reaches the usable height, the drive stops, and the rigid chain mechanism self-locks, completing the ladder extension process. This allows the telescopic ladder of this invention to be length-adjusted as needed to adapt to different occasions, thus having a wider range of applications (i.e., the length of the telescopic ladder can be varied through the telescopic cooperation between the segmented ladders).

[0023] This invention includes a locking device, which is used to fix the telescopic ladder to the vehicle body after docking with the tarpaulin hanger on the vehicle body. The locking device includes an unlocking handle, a lower locking block, an upper locking block, a spring, a pull rod, and a limiting block. The lower and upper locking blocks are wedge-shaped blocks, with wedge-shaped grooves symmetrically arranged on their sides away from the housing. One end of the pull rod passes through a square receiving groove and is fixedly connected to the upper locking block, while the other end is connected to the unlocking handle. The spring is sleeved on the outer wall of the inner pull rod and is in a semi-compressed state. The limiting block is located on the opposite side of the lower and upper locking blocks and is used to limit the position of the tarpaulin hanger. This fixes the position of the telescopic ladder installed on the vehicle body, preventing misalignment or displacement; at the same time, the compression spring abuts against the upper and lower locking blocks, preventing the tarpaulin hanger from detaching and causing the telescopic ladder to fall off.

[0024] When installing the telescopic ladder using the locking device of this invention, an inward pushing force is applied between the lower locking block and the upper locking block to the canopy hanger. The canopy hanger then passes through the contact surface of the lower and upper locking blocks and abuts against the limiting block. When disassembling the telescopic ladder, pulling the unlocking handle compresses the spring, causing the canopy hanger to disengage from the gap between the lower and upper locking blocks, thus completing the disassembly of the telescopic ladder. The locking device of this invention allows for convenient and quick installation and disassembly of the telescopic ladder without occupying vehicle space, and enables its use on various vehicle bodies, expanding its application range.

[0025] The rigid chain mechanism of this invention includes an output shaft, a rigid chain housing, a guide wheel, a drive wheel, chain links, and a rigid chain. Two chain links are symmetrically arranged within the rigid chain housing. A guide wheel is located at the end of each chain link to guide its movement. The drive handle of the telescopic ladder is connected to the output shaft, which is located within the drive wheel. The drive wheel is mounted on one of the chain links and nested within it. During operation, simply rotating the drive handle moves the chain link forward or backward. Both chain links have teeth on their outer walls. These teeth mesh with each other to form a high-strength, high-rigidity rigid chain. The meshing rigid chain has a self-locking function, ensuring that the ladder will not slip when climbed segment by segment.

[0026] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or may be learned by practicing the invention. Attached Figure Description

[0027] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0028] Figure 1 This is a schematic diagram of the structure of the vehicle-mounted telescopic ladder of the present invention in its retracted state;

[0029] Figure 2 This is a vertical sectional view of the vehicle-mounted telescopic ladder of the present invention in its retracted state;

[0030] Figure 3 This is a cross-sectional view of the vehicle-mounted telescopic ladder of the present invention in its retracted state;

[0031] Figure 4 This is a schematic diagram of the structure of the vehicle-mounted telescopic ladder of the present invention in its extended state;

[0032] Figure 5 This is a cross-sectional view of the locking device of the vehicle-mounted telescopic ladder of the present invention;

[0033] Figure 6 This is a partially enlarged view of the segmented ladder of the vehicle-mounted telescopic ladder of the present invention;

[0034] Figure 7 This is a schematic diagram of the rigid chain mechanism of the vehicle-mounted telescopic ladder of the present invention.

[0035] Figure label:

[0036] Housing; 101-Step pedal; 2-Unlock handle; 3-Ladder head; 301-Ladder pedal; 302-Ladder side panel; 303-Handrail; 4-Connecting sleeve; 5-Drive handle; 6-Rocker arm;

[0037] Locking device; 701-Lower locking block; 702-Upper locking block; 703-Spring; 704-Pull rod; 705-Limit block;

[0038] Rigid chain mechanism; 801-Output shaft; 802-Rigid chain housing; 803-Guide wheel; 804-Drive wheel; 805-Chain link; 806-Rigid chain; 9-Adapter plate; 10-Flat washer; 11-Spring washer; 12-Screw;

[0039] 13-Sectional ladder; 1301-Slider groove; 1302-Protrusion; 1303-Groove; 1304-Tightening structure; 1305-Side plate; 1306-Ladder step; 14-Connecting rod; 15-Slider; 16-Flat key; 17-Support frame; 18-Body; 1801-Tarpan hanging head. Detailed Implementation

[0040] The following detailed description of a vehicle-mounted telescopic ladder is provided in conjunction with specific embodiments. These embodiments are for comparative and illustrative purposes only, and the present invention is not limited to these embodiments.

[0041] A specific embodiment of the present invention, such as Figures 1-4 As shown, a vehicle-mounted telescopic ladder is disclosed, including a housing 1, a rigid chain mechanism 8, segmented ladders 13, a connecting rod 14, and a drive mechanism. The housing 1 has a cuboid structure, and multiple segmented ladders 13 are arranged parallel to each other on one side of the housing 1. The rigid chain mechanism 8 is arranged on the opposite side of the housing 1, and the output end of the rigid chain mechanism 8 is connected to a segmented ladder 13 near its end. Adjacent segments of ladder 13 are connected by the connecting rod 14 and can slide relative to each other. The drive mechanism drives the rigid chain mechanism 8 to drive the segmented ladders 13 to achieve vertical upward or downward movement.

[0042] In implementation, the rigid chain mechanism 8 within the drive housing 1 drives the segmented ladder 13 to move upwards or downwards, while the other segmented ladders 13 passively move upwards or downwards under the action of the connecting rod 14. This invention's telescopic ladder structure abandons the traditional fixed-size ladder form, dividing the fixed-length ladder into multiple smaller segmented ladders. The shortening of the segments achieves a compact storage effect, occupying little space. The extension of the segments meets the height requirements for performing tasks, facilitating maintenance and repair by personnel and avoiding the need to climb ladders and vehicles during maintenance.

[0043] Furthermore, such as Figure 6 As shown, the segmented ladder 13 includes a protrusion 1302, a groove 1303, and a side plate 1305. Each segmented ladder 13 has a side plate 1305 on both sides, so that the side plates 1305 of each adjacent segmented ladder 13 are in contact with each other. A groove 1303 is provided on one short side of each side plate 1305, and a protrusion 1302 is provided on the other short side opposite to the side plate 1305. The protrusion 1302 and the groove 1303 are connected and can slide relative to each other. The protrusion 1302 can be inserted into the groove 1303. In other words, the protrusion 1302 of the segmented ladder 13 can be inserted into the groove 1303 of the adjacent segmented ladder 13 to limit the movement of the two adjacent segmented ladders 13, preventing misalignment or separation between the two adjacent segmented ladders 13. This allows multiple segmented ladders 13 to be horizontally fixed and positioned, achieving only longitudinal sliding movement, ensuring the safety of workers when climbing the ladder, and limiting the space occupied, thus avoiding the problem of insufficient space leading to the inability to work later.

[0044] Furthermore, the segmented ladder 13 also includes a slider 15, a slider groove 1301, and a clamping structure 1304. The slider groove 1301 is longitudinally arranged on the side plate 1305, and the slider 15 is disposed within the slider groove 1301. The slider 15 is slidably connected to the slider groove 1301. A connecting rod 14 is disposed on the side of two adjacent segmented ladders 13, and both ends of the connecting rod 14 correspond to the slider grooves 1301 of the two adjacent segmented ladders 13. Both ends of the connecting rod 14 are provided with through holes, and the clamping structure 1304 passes through the through holes and is fixedly connected to the slider 15, so that the through holes at both ends of the connecting rod 14 are hinged to the clamping structure 1304. When the drive mechanism drives the segmented ladder 13 to move upward, the slider 15 simultaneously drives the clamping structure 1304 and the connecting rod 14 to move synchronously until the slider 15 slides to one end of the slider groove 1301.

[0045] Specifically, when the drive mechanism drives the first segmented ladder 13 at the nearest end to move upward, the slider 15 of this segmented ladder 13 drives the clamping structure 1304 and the connecting rod 14 of this segment to slide in the slider groove 1301. At the same time, under the drive and restriction of the connecting rod 14, the slider 15 of the second segmented ladder 13 adjacent to this segment drives the clamping structure 1304 of this segment to slide synchronously in the slider groove 1301. Until the slider 15 of the first segmented ladder 13 slides to the bottom of the slider groove 1301 and the slider 15 of the second segmented ladder 13 slides to the top of the slider groove 1301, the relative position of the two segmented ladders 13 is fixed. At this time, the drive mechanism drives the first segmented ladder 13 to continue to move upward, which in turn drives the second segmented ladder 13 to move upward synchronously. By analogy, all the segmented ladders 13 can extend segment by segment under the drive of the drive mechanism, so that the telescopic ladder of the present invention can be adjusted in length as needed to adapt to the needs of different occasions (that is, the length of the telescopic ladder can be changed in different ways through the telescopic cooperation between the segmented ladders 13).

[0046] A specific embodiment of the present invention, such as Figure 7 As shown, the rigid chain mechanism 8 includes an output shaft 801, a rigid chain housing 802, a guide wheel 803, a drive wheel 804, chain links 805, and a rigid chain 806. Two chain links 805 are provided, symmetrically arranged within the rigid chain housing 802. The chain links 805 on each side are coiled together, and each chain link 805 has a guide wheel 803 at its end for guiding the movement of the chain link 805.

[0047] Furthermore, the output shaft 801 is disposed within the drive wheel 804, which is disposed inside one of the chain links 805 and nested with the chain link 805 for driving the chain link 805 forward or backward. Both chain links 805 have teeth on their outer outer walls, which can mesh with each other to form a high-strength, high-rigidity rigid chain 806. The meshing rigid chain 806 has a self-locking function to ensure that the segmented ladder 13 will not slip when personnel climb it.

[0048] Furthermore, the drive mechanism includes a connecting sleeve 4, a drive handle 5, a rocker arm 6, and a flat key 16; one end of the connecting sleeve 4 is connected to the output shaft 801 of the rigid chain mechanism 8 via the flat key 16, and the other end of the connecting sleeve 4 is externally connected to the drive handle 5 and the rocker arm 6. In use, the output shaft 801 is rotated by manually driving the rocker arm 6, thereby driving the rigid chain mechanism 8 to move.

[0049] Furthermore, the drive mechanism also includes an adapter plate 9 and a support frame 17. The adapter plate 9 is disposed at the output end of the rigid chain 806. The support frame 17 is fixedly connected to the adapter plate 9 at the bottom, and the support frame 17 is fixedly connected to the ladder pedal 1306 of the nearest segmented ladder 13 via a flat washer 10, a spring washer 11, and a screw 12 at the top. When the rigid chain 806 is driven by the drive mechanism, the segmented ladder 13 connected to the support frame 17 moves synchronously under the drive of the rigid chain 806, and the rigid chain 806 provides support for the segmented ladder 13, thereby enabling the segmented ladder 13 to extend or shorten.

[0050] One embodiment of the present invention, such as Figure 5 As shown, it also includes a locking device 7, which is located on one side of the housing 1 and is used to fix the telescopic ladder to the vehicle body 18 after docking with the tarpaulin hanger 1801 on the vehicle body 18. The locking device 7 includes an unlocking handle 2, a lower locking block 701, an upper locking block 702, a spring 703, a pull rod 704, and a limiting block 705. A square receiving groove is provided on one side of the housing where the locking device 7 is located to receive the lower locking block 701, the upper locking block 702, the spring 703, and the limiting block 705. The lower locking block 701 and the upper locking block 702 are wedge-shaped blocks, and wedge-shaped grooves are symmetrically arranged on the side of the two blocks away from the housing 1. The length of the wedge-shaped grooves on the side away from the housing 1 is greater than the length facing the housing 1.

[0051] Furthermore, the pull rod 704 is vertically disposed inside the housing 1. One end of the pull rod 704 passes through the square receiving groove and is fixedly connected to the upper locking block 702, while the other end is connected to the unlocking handle 2, which is disposed outside the housing 1. The spring 703 is sleeved on the outer wall of the pull rod 704 inside the square receiving groove and is in a semi-compressed state, such that one end of the spring 703 abuts against the upper end face of the upper locking block 702, and the other end abuts against the lower surface of the upper wall of the square receiving groove. The limiting block 705 is disposed on the opposite side of the square receiving groove and the lower locking block 701 and the upper locking block 702. There are two limiting blocks 705. The distance between the two limiting blocks 705 is equal to the height of the tarpaulin hanger 1801 on the vehicle body 18. The distance between the two limiting blocks 705 and the sides of the lower locking block 701 and the upper locking block 702 is not greater than the width of the tarpaulin hanger 1801 on the vehicle body 18, and is used to limit the tarpaulin hanger 1801.

[0052] When installing the telescopic ladder, the tarpaulin hanger 1801 on the vehicle body 18 applies an inward pushing force to the wedge-shaped groove between the lower locking block 701 and the upper locking block 702. The tarpaulin hanger 1801 then passes through the contact surface between the lower locking block 701 and the upper locking block 702 and abuts against the two limiting blocks 705. The limiting blocks 705 limit the tarpaulin hanger 1801, allowing the telescopic ladder to be fixed to the vehicle body 18. At the same time, the semi-compressed spring 703 presses the upper locking block 702 against the lower locking block 701, preventing the tarpaulin hanger 1801 from coming out from between the lower locking block 701 and the upper locking block 702.

[0053] When disassembling the telescopic ladder, pulling the unlocking handle 2 compresses the spring 703, causing the upper locking block 702 to move upwards. This widens the gap between the lower locking block 701 and the upper locking block 702 until the tarpaulin hanger 1801 can disengage from the gap, completing the disassembly of the telescopic ladder. The locking device 7 of this invention allows for convenient and quick installation and disassembly of the telescopic ladder without occupying space on the vehicle body. It also enables the telescopic ladder to be used on various vehicle bodies, expanding its application range.

[0054] Furthermore, the housing 1 also includes a step 101, which is disposed on one side of the housing 1 and is disposed opposite to the segmented ladder 13 which is away from the rigid chain mechanism 8. The step 101 is used to assist the workers in the early stage of climbing the ladder, making it easier for the workers to climb the ladder in the early stage.

[0055] Furthermore, it also includes a ladder head 3, which can be detachably connected to the segmented ladder 13 near the rigid chain mechanism 8 via bolts. The ladder head 3 includes ladder steps 301, ladder side plates 302, and handrails 303. Two ladder side plates 302 are respectively disposed on both sides of the ladder head 3, multiple ladder steps 301 are arranged parallel to each other on the inner side of the ladder head 3, and the handrails 303 are disposed above the ladder side plates 302.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A vehicle-mounted telescoping creeper characterized by, The shell (1), the rigid chain mechanism (8), the segmented ladder (13), the connecting rod (14) and the driving mechanism are included. The segmented ladders (13) are arranged in the shell (1) in parallel, the output end of the rigid chain mechanism (8) is connected with the segmented ladders (13), two adjacent segmented ladders (13) are connected through the connecting rod (14), the two adjacent segmented ladders (13) can slide relative to each other, and the driving mechanism can drive the rigid chain mechanism (8) to drive the segmented ladders (13) to realize upward or downward movement. The locking device (7) is further included. The locking device (7) includes an unlocking handle (2), a lower locking block (701), an upper locking block (702), a spring (703), a pull rod (704) and a limiting block (705). One side of the shell (1) provided with the locking device (7) is provided with a square accommodating groove for accommodating the lower locking block (701), the upper locking block (702), the spring (703) and the limiting block (705). The lower locking block (701) and the upper locking block (702) are wedge-shaped blocks, and symmetrically provided with wedge-shaped grooves on the side away from the shell (1). The length of the wedge-shaped groove away from the shell (1) is greater than the length facing the shell (1). The pull rod (704) is vertically arranged on the inner side of the shell (1), one end of the pull rod (704) is fixedly connected with the upper locking block (702) through the square accommodating groove, the other end is connected with the unlocking handle (2), and the unlocking handle (2) is arranged above the shell (1). The spring (703) is sleeved on the outer wall of the pull rod (704) in the square accommodating groove and is in a semi-compressed state, so that one end of the spring (703) abuts against the upper end surface of the upper locking block (702), and the other end abuts against the lower surface of the upper wall of the square accommodating groove. The limiting block (705) is arranged on the opposite side of the square accommodating groove and the lower locking block (701) and the upper locking block (702). The limiting block (705) has two, and the distance between the two limiting blocks (705) is equal to the height of the tarpaulin hanging head (1801) on the vehicle body (18).

2. The vehicle-mounted telescoping creeper of claim 1, wherein, The segmented ladder (13) includes a protruding block (1302), a groove (1303) and a side plate (1305).

3. The vehicle-mounted telescoping creeper of claim 2, wherein, One side of the side plate (1305) is provided with the groove (1303), and the opposite side is provided with the protruding block (1302).

4. The vehicle-mounted telescoping creeper of claim 3, wherein, The segmented ladder (13) further includes a sliding block (15) and a sliding block groove (1301).

5. The vehicle-mounted telescoping creeper of claim 4, wherein, The sliding block groove (1301) is arranged on the side plate (1305).

6. The vehicle-mounted telescoping creeper of claim 5, wherein, The sliding block (15) is arranged in the sliding block groove (1301), and the sliding block (15) and the sliding block groove (1301) are in sliding connection.

7. The vehicle-mounted telescoping creeper of any of claims 1-6, wherein, The driving mechanism includes a connecting sleeve (4), a driving handle (5), a rocker arm (6) and a flat key (16). One end of the connecting sleeve (4) is connected with the output shaft (801) of the rigid chain mechanism (8) through the flat key (16), and the other end is connected with the driving handle (5) and the rocker arm (6).

8. The vehicle-mounted telescoping creeper of any of claims 1-6, wherein, The shell (1) further includes a pedal (101), and the pedal (101) is arranged on one side of the shell (1).

9. The vehicle-mounted telescoping creeper of any of claims 1-6, wherein, The ladder head (3) is further included.

10. The vehicle-mounted telescoping creeper of claim 9, wherein, The ladder head (3) is detachably connected with the sectional ladder (13). The ladder head (3) is detachably connected with the sectional ladder (13).

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