Height-adjustable and foldable two-stage step structure

Abstract

The utility model relates to a height-adjustable and foldable two-stage step structure which comprises an installation support, the installation support is a rectangular frame with an opening in the front face, a step is horizontally arranged at the bottom of the installation support, and an inserting shaft is longitudinally arranged at the bottom of the installation support and penetrates through the front end of the step. The steps can rotate around the inserting shafts to the interior of the mounting support, diagonal draw bars are obliquely arranged on the mounting support, and the other ends of the diagonal draw bars are movably connected with the other ends of the steps. Height adjusting assemblies are further arranged on the two sides of the mounting support. The connecting structure of the two-stage step is changed on the basis of an original two-stage step of an existing vehicle, the height of the step is adjusted by rapidly adjusting the height of the step support from the ground, the two-stage step can be folded and unfolded through the hydraulic supporting rod structure, the use requirement of a client is rapidly met, and the use cost is reduced. And the universalization requirement that the same cab is matched with the ground clearance of the two-stage step of the chassis with different structures is met.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle control systems, and in particular to a height-adjustable and foldable secondary step structure. Background Art

[0002] The vehicle step is designed to facilitate the driver to enter and exit the cab. Especially at the current stage, the same cab of commercial vehicles has different uses and demands for the secondary step to adapt to different working conditions, such as transportation, basements, mountainous areas, etc., and the matching of different frame belly heights, front suspension specifications, tire specifications, and cab suspension heights will cause the ground height of the secondary step to change.

[0003] The secondary step structures of commercial vehicles are basically non-adjustable in height, for example Figure 1 As shown in the figure, if the height of the second-level step is too low from the ground, it will affect the vehicle's passability; if it is too high, it will cause inconvenience to users getting on and off the vehicle and lose the usability characteristics of the component itself, causing great complaints from users and affecting the product's reputation. Therefore, both its versatility and adaptability need to be improved. Utility Model Content

[0004] Based on the above description, the utility model provides a height-adjustable and foldable two-stage step structure to solve the shortcomings of the existing two-stage step structure that it cannot be raised and lowered according to actual usage, resulting in poor versatility and adaptability.

[0005] The utility model is realized through the following technical solutions:

[0006] A height-adjustable and foldable two-stage step structure comprises a mounting bracket, wherein the mounting bracket is a rectangular frame with an opening at the front, and a step is horizontally arranged at the bottom of the mounting bracket, and an insertion shaft is longitudinally arranged at the bottom of the mounting bracket and passes through the front end of the step, and the step can be rotated around the insertion shaft to the inside of the mounting bracket, and a diagonal rod is also obliquely arranged on the mounting bracket, and the other end of the diagonal rod is movably connected to the other end of the step; height adjustment components are also provided on both sides of the mounting bracket.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the diagonal tie rod is a hydraulic rod and two of them are arranged, and a hinge seat is provided on the surface of the mounting bracket, and hinge joints are provided at both ends of the hydraulic rod respectively, and one end is movably connected to the hinge seat, and two support angles are provided at the other end of the step away from the mounting bracket, and pins are longitudinally inserted inside the two support angles, and the hinge head on the other end of the hydraulic rod is movably sleeved on the pin.

[0009] Furthermore, the step surface is also provided with a rubber pad, and the surface of the rubber pad is arranged with wavy anti-slip patterns.

[0010] Furthermore, the height adjustment assembly includes a connecting plate vertically arranged on both sides of the mounting bracket, a plurality of sockets are vertically arranged on the connecting plate, and through holes are also arranged through the side walls of the mounting bracket and aligned with the sockets. Anchor rods are horizontally arranged on the connecting plate and pass through the connecting plate and the mounting bracket, and both ends of the anchor rods are also provided with threads and equipped with locking nuts.

[0011] Furthermore, the height adjustment assembly includes clamps vertically arranged on both sides of the mounting bracket, the surface of the clamps is provided with a sliding groove, the side walls of the mounting bracket are provided with a protrusion and are slidably inserted into the sliding groove, and the sliding groove is also longitudinally arranged with a threaded rod, and the threaded rod extends vertically downward and passes through the protrusion.

[0012] Furthermore, a support plate is horizontally arranged at the top of the two clamping plates, and the interior of the support plate is hollow. The top ends of the two threaded rods penetrate through the inner bottom surface of the support plate and are provided with a worm gear. A drive motor is provided on one side of the support plate, and a worm is transmission-connected to the output end of the drive motor, and the worm is meshed with the two worm gears at the same time.

[0013] Furthermore, the top surface of the support plate is provided with a plurality of anti-slip protrusions.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0015] 1. This application changes the connection structure of the secondary step based on the original secondary step of the existing vehicle, and realizes the height and low profile of the step by quickly adjusting the height of the step bracket from the ground. Moreover, this structure can realize the folding and opening of the secondary step through the hydraulic strut structure, and quickly realize the customer's usage needs, and meet the universal requirements of the secondary step ground height matching different structural chassis of the same cab, improve the universal level of parts, improve the universal degree of products, and greatly reduce the design burden of designers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the existing steps;

[0017] Figure 2 It is a schematic diagram of the structure of the mounting bracket and the step in the first embodiment;

[0018] Figure 3 It is a schematic diagram of the structure of the mounting bracket and the step in the second embodiment;

[0019] Figure 4 This is a schematic diagram of the internal structure of the support plate in Example 2;

[0020] Among them: 1. Mounting bracket; 11. Insert shaft; 2. Step; 21. Support angle; 22. Pin shaft; 3. Diagonal tie rod; 4. Height adjustment assembly; 41. Connecting plate; 42. Socket; 43. Clamp; 44. Slide; 45. Drive motor; 46. Threaded rod; 47. Support plate; 48. Worm; 49. Turbine. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0023] Combination Figure 2-4 As shown, a height-adjustable and foldable secondary step structure comprises:

[0024] The mounting bracket 1 is the main supporting part of the entire structure, and is generally configured as a rectangular frame structure with one side open;

[0025] Step 2, a flat plate arranged at the bottom of the mounting bracket 1 and movably connected to the bottom end of the mounting bracket 1;

[0026] The inclined rod 3 is arranged between the mounting bracket 1 and the step 2 and is fixedly connected to the two, and plays the functions of supporting and storing at the same time;

[0027] The height adjustment components 4 are arranged on both sides of the mounting bracket 1 to adjust the height of the entire mounting bracket 1, thereby enhancing its scope of application and further improving its convenience.

[0028] Embodiment 1:

[0029] Specifically, the height adjustment component 4 includes connecting plates 41 arranged on both sides of the mounting bracket 1. The two connecting plates 41 are fixedly connected to the vehicle body, and a plurality of plug holes 42 are vertically arranged on the connecting plates 41. At the same time, the mounting bracket 1 is also correspondingly arranged with a plurality of through holes. The plug holes 42 and the through holes are arranged in alignment, and anchor rods are transversely arranged on the connecting plates 41 so as to pass through the connecting plates 41 and the mounting bracket 1 transversely in sequence, thereby fixing the two together. To prevent the anchor rods from slipping out, threads should be set at both ends thereof respectively, and locking nuts should be provided on the threads to reinforce them with the bolt structure.

[0030] Based on the above bolt locking structure, the height adjustment of the step 2 can be achieved in this embodiment, and the operation is simple and easy to understand.

[0031] In addition, in order to accommodate the step 2 inside the mounting bracket 1, the inclined rod 3 should be set as a telescopically adjustable hydraulic rod, and at the same time, hinge seats are respectively provided on both sides of the surface of the mounting bracket 1, and hinge joints are provided at both ends of the hydraulic rod, and one end is movably connected to the hinge seat;

[0032] One end of the step 2 is arranged close to the bottom end of the mounting bracket 1, and an insertion shaft 11 is longitudinally inserted through the bottom end of the mounting bracket 1. The insertion shaft 11 is fixedly connected to the end of the step 2, so that the step 2 can deflect upward to the inside of the mounting bracket 1 along with the insertion shaft 11. The other end of the step 2 away from the mounting bracket 1 is provided with two support angles 21, and a pin shaft 22 is longitudinally penetrated inside the support angle 21. The other end of the hydraulic rod is movably sleeved on the pin shaft 22.

[0033] Combined with the installation structure of the above-mentioned step 2 and the hydraulic rod, in this embodiment, the step 2 can be retracted and unfolded only by controlling the extension and retraction of the hydraulic rod. Relying on the folding effect and the height adjustment function, the above structure can meet the universal requirements of the ground height of the second-level step 2 of the same cab matching different structural chassis, thereby improving the universal level of parts, enhancing the universal degree of products, and greatly reducing the design burden of designers.

[0034] At the same time, considering the anti-skid effect on rainy and snowy days, a rubber pad should be provided on the surface of the step 2, and a wavy anti-skid pattern should be provided on the rubber pad.

[0035] Embodiment 2:

[0036] Specifically, the height adjustment component 4 includes a clamping plate 43 arranged on both sides of the mounting frame, and a slide groove 44 is vertically arranged on the surface of the clamping plate 43. At the same time, protrusions are arranged outward on both sides of the mounting bracket 1, and the protrusions are movably inserted in the slide groove 44. A support plate 47 is also provided on the top of the clamping plate 43. A threaded rod 46 is provided in the slide groove 44 and extends upward to the inside of the support plate 47 and is rotatably connected to the support plate 47. A threaded hole that is compatible with the threaded rod 46 is also vertically arranged on the protruding portion. Therefore, the entire mounting bracket 1 can be forced to move up and down by relying on threaded transmission.

[0037] In order to ensure that the two threaded rods 46 rotate at the same time and are not affected by the outside world, a worm wheel 49 and worm 48 structure with a self-locking function is adopted, that is, the interior of the support plate 47 is set to be hollow, and the top end of the threaded rod 46 extends to the interior of the support plate 47 and a worm wheel 49 is set. At the same time, a worm 48 is arranged horizontally inside the support plate 47. The worm 48 is meshed with the two turbines at the same time, and a drive motor 45 is provided at one end of the worm 48, so that it is connected to the worm 48 for transmission, and then the height adjustment effect is achieved through remote control.

[0038] In actual use, the support plate 47 can also be used as a step, so an anti-skid convex structure should be arranged on its top surface to enhance its anti-skid function, so that the staff can use it more safely and conveniently when entering and exiting the car door.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solution from the technical solution of the embodiments of the utility model.

Claims

1. A height-adjustable and foldable two-stage step structure, characterized in that: The invention comprises a mounting bracket (1), wherein the mounting bracket (1) is a rectangular frame with an opening at the front, and a step (2) is horizontally arranged at the bottom of the mounting bracket (1), and an insertion shaft (11) is longitudinally arranged at the bottom of the mounting bracket (1) and passes through the front end of the step (2), and the step (2) can be rotated around the insertion shaft (11) to the inside of the mounting bracket (1), and a diagonal rod (3) is also obliquely arranged on the mounting bracket (1), and the other end of the diagonal rod (3) is movably connected to the other end of the step (2); height adjustment components (4) are also provided on both sides of the mounting bracket (1).

2. A height-adjustable and foldable two-stage step structure according to claim 1, characterized in that: The inclined tie rod (3) is a hydraulic rod and two of them are arranged, and a hinge seat is provided on the surface of the mounting bracket (1), and hinge joints are provided at both ends of the hydraulic rod, and one end is movably connected to the hinge seat. The other end of the step (2) away from the mounting bracket (1) is provided with two support angles (21), and pin shafts (22) are longitudinally inserted inside the two support angles (21), and the hinge joint on the other end of the hydraulic rod is movably sleeved on the pin shaft (22).

3. A height-adjustable and foldable two-stage step structure according to claim 2, characterized in that: The surface of the step (2) is also provided with a rubber pad, and the surface of the rubber pad is arranged with wavy anti-skid patterns.

4. A height-adjustable and foldable two-stage step structure according to claim 1, characterized in that: The height adjustment assembly (4) comprises a connecting plate (41) vertically arranged on both sides of the mounting bracket (1), a plurality of plug holes (42) are vertically arranged on the connecting plate (41), a through hole is also arranged through the side wall of the mounting bracket (1) and is aligned with the plug holes (42), an anchor rod is transversely arranged on the connecting plate (41) and passes through the connecting plate (41) and the mounting bracket (1), and both ends of the anchor rod are also provided with threads and are equipped with locking nuts.

5. A height-adjustable and foldable two-stage step structure according to claim 1, characterized in that: The height adjustment assembly (4) comprises a clamping plate (43) vertically arranged on both sides of the mounting bracket (1), a sliding groove (44) is provided on the surface of the clamping plate (43), a protrusion is provided on the side wall of the mounting bracket (1) and is slidably inserted into the inside of the sliding groove (44), and a threaded rod (46) is longitudinally arranged inside the sliding groove (44), and the threaded rod (46) extends vertically downward and passes through the protruding portion.

6. A height-adjustable and foldable two-stage step structure according to claim 5, characterized in that: A support plate (47) is horizontally arranged at the top of the two clamping plates (43), and the support plate (47) is hollow inside. The top ends of the two threaded rods (46) penetrate the inner bottom surface of the support plate (47) and are provided with a worm gear (49). A driving motor (45) is provided on one side of the support plate (47), and a worm (48) is transmission-connected to the output end of the driving motor (45), and the worm (48) is meshed with the two worm gears (49) at the same time.

7. A height-adjustable and foldable two-stage step structure according to claim 6, characterized in that: The top surface of the support plate (47) is also provided with a plurality of anti-slip protrusions.

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