Two-post lift with articulated arms

Abstract

The object of the present invention is to disclose a two-post lift with articulated arms, which relates to the technical field of vehicle lifting, and comprises a first column and a second column; a first articulated arm and a second articulated arm are symmetrically arranged on both sides of the first column, and a lifting plate is respectively arranged at the ends of the first articulated arm and the second articulated arm; a third articulated arm and a fourth articulated arm are symmetrically arranged on both sides of the second column, and a lifting plate is respectively arranged at the ends of the third articulated arm and the fourth articulated arm; the first articulated arm, the second articulated arm, the third articulated arm and the fourth articulated arm respectively comprise a first arm and a second arm, the first arm and the second arm are hinged, and the ratio of the length of the first arm to the length of the second arm is 1:5. Technical effect: each arm of the two-post lift is designed as an articulated arm, that is, the first arm with the lifting plate can rotate with the hinge point as the center, and can be more flexibly adjusted according to the position of the lifting point, so that the lifting arm can be more flexible and accurately align with the lifting point to lift the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lifting, in particular to a double-column lift with articulated arms. Background Art

[0002] A two-post car lift is a special mechanical lifting equipment commonly used in car repair and maintenance units. Two-post lifts are the main type of lifts and are widely used in the repair and maintenance of small cars such as sedans.

[0003] At present, the lifting arms of two-post lifts are straight arms, which lift the vehicle by lifting the four lifting points of the vehicle chassis through four straight arms. At present, the lifting points of the vehicle of the two-post lift with supporting arms are fixed, and the lifting points of different vehicles have certain differences. With the gradual increase of battery-powered vehicles, the batteries of battery-powered vehicles are set on the chassis, and the position of the batteries is in the range that cannot be lifted, resulting in a smaller lifting surface range. The current two-post lift with supporting arms still has the defect of insufficient flexibility in adjusting the lifting position when lifting the vehicle. In addition, because the vehicle body is heavy, especially the battery-powered vehicle body is heavy, once the lifting position is inaccurate or the lifting is false, it will cause damage to the battery and even cause the vehicle to fall off.

[0004] In view of this, it is necessary to develop a two-post lift with an articulated arm to overcome the above-mentioned defects. Summary of the Invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to disclose a two-post lift with an articulated arm, in which the lifting arm is designed as a joint structure so that the lifting arm can be more flexible and accurately align with the lifting point to lift the vehicle.

[0006] To achieve the above-mentioned object of the invention, the present invention provides a two-post lift with an articulated arm, comprising a first post and a second post;

[0007] A first articulated arm and a second articulated arm are symmetrically arranged on both sides of the first column, and a lifting plate is respectively arranged at the ends of the first articulated arm and the second articulated arm;

[0008] A third joint arm and a fourth joint arm are symmetrically arranged on both sides of the second column, and a lifting plate is respectively arranged at the ends of the third joint arm and the fourth joint arm;

[0009] The first articulated arm, the second articulated arm, the third articulated arm and the fourth articulated arm respectively include a first arm and a second arm, the first arm and the second arm are hinged, and the ratio of the length of the first arm to the length of the second arm is 1:5.

[0010] Preferably, the second arm is hinged to the column.

[0011] Preferably, a first support plate and a second support plate are respectively provided at the top and bottom of the second arm, the first arm is provided between the first support plate and the second support plate, and the rotating shaft passes through the first support plate, the first arm and the second support plate in sequence;

[0012] A semicircular gear is provided at the end of the first arm;

[0013] A T-shaped defective portion is provided at the end of the second arm, a T-shaped tooth block is provided in the T-shaped defective portion, and the T-shaped tooth block cooperates with the semicircular gear;

[0014] A waist-shaped hole is provided on the side of the second arm, the waist-shaped hole is connected to the T-shaped defective portion, and a handle is provided on the side of the T-shaped tooth block, the handle extending out of the waist-shaped hole;

[0015] A spring is arranged between the T-shaped tooth block and the T-shaped defect.

[0016] Preferably, a first spacer is provided between the first support plate and the first arm;

[0017] Disposing a second spacer between the second support plate and the first arm;

[0018] The first cushion block and the second cushion block are respectively located on both sides of the rotating shaft.

[0019] Preferably, the second arm is parallel to the ground, and the angle between the first arm and the ground is 2°.

[0020] Preferably, the second arm is a telescopic arm.

[0021] Preferably, the first cushion block and the second cushion block are both arc-shaped.

[0022] Preferably, the second arm includes an outer tube and an inner tube, a first reinforcing plate is provided around the bottom of an end portion of the outer tube, and a second reinforcing plate is provided around the bottom of an end portion of the inner tube.

[0023] Preferably, the lifting plate includes a lifting base and a tray;

[0024] The lifting base includes a sleeve portion and a supporting portion;

[0025] The tray includes a support plate and a guide rod, and the guide rod slides along the through hole of the sleeve portion;

[0026] a disc spring is provided between the support plate and the support portion;

[0027] A first annular step is provided on the support portion, wherein the first annular step is communicated with the sleeve portion;

[0028] A second annular step is provided on the guide rod, and a proximity sensor is provided between the second annular step and the first annular step.

[0029] Preferably, the lifting plate includes a lifting base and a tray;

[0030] The lifting base includes a sleeve portion and a supporting portion;

[0031] The tray includes a support plate and a guide rod, and the guide rod slides along the through hole of the sleeve portion;

[0032] a disc spring is provided between the support plate and the support portion;

[0033] A warning line is provided on the guide rod.

[0034] Compared with the prior art, the technical effects of the present invention are as follows:

[0035] (1) Each lifting arm of the two-post lift is designed as a joint structure, that is, the first arm of the lifting plate can rotate around the hinge point. The first arm has a greater degree of freedom and can be adjusted more flexibly according to the position of the lifting point, so that the lifting arm can be more flexible and accurately align with the lifting point to lift the vehicle.

[0036] (2) The ratio of the length of the first arm to the length of the second arm is 1:5. The length of the first arm accounts for a small proportion of the overall lifting arm length. The flexible adjustment of the first arm drives the flexible adjustment of the position of the lifting plate, which can adapt to more vehicle models and the lifting position is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 It is a schematic diagram of the three-dimensional structure of the double-post lift of the present invention.

[0039] Figure 2 It is a schematic diagram of the three-dimensional structure of the articulated arm of the present invention.

[0040] Figure 3 It is a schematic diagram of the three-dimensional structure of the articulated arm of the present invention.

[0041] Figure 4 It is a schematic diagram of the three-dimensional structure of the articulated arm of the present invention.

[0042] Figure 5 It is a schematic diagram of the three-dimensional structure of the articulated arm of the present invention.

[0043] Figure 6 It is a schematic diagram of the three-dimensional structure of the articulated arm of the present invention.

[0044] Figure 7 It is a schematic diagram of the three-dimensional structure of the lifting plate of the present invention.

[0045] Figure 8 It is a schematic cross-sectional structural diagram of the lifting plate of the present invention.

[0046] Figure 9 It is a schematic diagram of the explosion structure of the lifting plate of the present invention.

[0047] Among them, 1. First column; 11. First joint arm; 111. First arm; 1111. Semicircular gear; 112. Second arm; 1121. First support plate; 1122. Second support plate; 1123. T-shaped defective part; 1124. T-shaped tooth block; 1125. Waist-shaped hole; 1126. Handle; 1127. Spring; 1128. Outer cylinder; 1129. Inner cylinder; 2. Second column; 21. Third joint arm; 22. Fourth joint arm; 3. Lifting plate; 31. Lifting base; 311. Sleeve part; 312. Support part; 313. First annular step; 32. Tray; 321. Support plate; 322. Guide rod; 323. Second annular step; 324. Warning line; 4. Rotating shaft; 5. First pad; 6. Second pad; 7. First reinforcing plate; 8. Second reinforcing plate; 9. Disc spring. DETAILED DESCRIPTION

[0048] The present invention is described in detail below with reference to the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in this field based on these embodiments are all within the scope of protection of the present invention.

[0049] Example 1

[0050] Ginseng Figures 1 to 9 As shown, this embodiment discloses a specific implementation of a two-post lift with articulated arms.

[0051] Two-post lift with articulated arms, see Figures 1 to 6As shown, it includes a first column 1 and a second column 2; a first articulated arm 11 and a second articulated arm 12 are symmetrically arranged on both sides of the first column 1, and a lifting plate 3 is respectively arranged at the ends of the first articulated arm 11 and the second articulated arm 12; a third articulated arm 21 and a fourth articulated arm 22 are symmetrically arranged on both sides of the second column 2, and a lifting plate 3 is respectively arranged at the ends of the third articulated arm 21 and the fourth articulated arm 22; the first articulated arm 11, the second articulated arm 12, the third articulated arm 21 and the fourth articulated arm 22 respectively include a first arm 111 and a second arm 112, the first arm 111 and the second arm 112 are hinged, and the ratio of the length of the first arm 111 to the length of the second arm 112 is 1:5.

[0052] Specifically, the current straight-arm two-post lift has the drawback of not being flexible enough in locating the lifting point of the vehicle chassis when lifting a vehicle. This is especially true for current battery-powered vehicles, as most of the batteries of these vehicles are located on the chassis. The lifting point range of battery-powered vehicles is small, making it difficult to locate the lifting position. In addition, if the lifting position deviates, it may damage the battery. In view of the above drawbacks, see Figures 1 to 6 In order to improve the flexibility of the lifting arm so that the lifting arm can accurately lift the vehicle, especially accurately lift the lifting points of battery-powered vehicles, the four lifting arms of this embodiment are all articulated arms, namely the first articulated arm 11, the second articulated arm 12, the third articulated arm 21 and the fourth articulated arm 22; the joints of the four lifting arms adopt an articulated structure, and the ratio of the length of the first arm 111 to the length of the second arm 112 is 1:5. The length of the second arm 112 refers to the maximum extension length of the second arm 112. The existence of the joint greatly improves the flexibility of the lifting arm. For example, when the straight arm cannot accurately lift the four lifting points of the vehicle at the same time, the second arm 112 of one or more of the lifting arms can be rotated to accurately align with the lifting points for lifting, thereby avoiding exceeding the lifting points and avoiding damage to the battery.

[0053] See also Figures 1 to 6In this embodiment, the joint structure principle of the first joint arm 11, the second joint arm 12, the third joint arm 21 and the fourth joint arm 22 is the same. The first joint arm 11 is taken as an example for description below. The second arm 112 is hinged to the column, and the second arm 112 rotates around the column; the top and bottom of the second arm 112 are respectively provided with a first support plate 1121 and a second support plate 1122, and the first arm 111 is provided between the first support plate 1121 and the second support plate 1122, and the shaft 4 passes through the first support plate in sequence. 1121, the first arm 111 and the second support plate 1122, the first arm 111 rotates around the rotating shaft 4, and the rotating shaft 4 is the hinge point; the end of the first arm 111 is provided with a semicircular gear 1111, and the semicircular gear 1111 has a first external tooth, and the first external tooth is distributed along the arc surface of the semicircular gear 1111; the end of the second arm 112 is provided with a T-shaped defective portion 1123, and a T-shaped tooth block 1124 is provided in the T-shaped defective portion 1123, and the T-shaped tooth block 1124 cooperates with the semicircular gear 1111, and the T-shaped tooth block 1124 A second outer tooth is provided. When the second outer tooth is engaged with the first outer tooth, the first arm 111 is locked. When the second outer tooth is disengaged from the first outer tooth, the first arm 111 is unlocked. A waist-shaped hole 1125 is provided on the side of the second arm 112. The waist-shaped hole 1125 is connected to the T-shaped defective portion 1123. A handle 1126 is provided on the side of the T-shaped tooth block 1124. The handle 1126 extends out of the waist-shaped hole 1125. A spring 1126 is provided between the T-shaped tooth block 1124 and the T-shaped defect 1123. 27; When it is necessary to rotate the first arm 111, push the handle 1126 toward the second arm 112 to compress the spring 1127, drive the T-shaped tooth block 1124 away from the semicircular gear 1111 and disengage the two, so that the first arm 111 can rotate freely around the rotating shaft 4; when it is necessary to lock the first arm 111 at a certain angle, release the handle 1126, and under the rebound pressure of the spring 1127, the T-shaped tooth block 1124 approaches the semicircular gear 1111 and engages the two, so that the first arm 111 is locked, and is ready for lifting the vehicle.

[0054] See also Figure 4 and Figure 5Because the first arm 111 is short, when the lifting plate 3 lifts the vehicle, in order to prevent the first arm 111 from sagging too much under the action of the vehicle's gravity, a first cushion block 5 is set between the first support plate 1121 and the first arm 111; a second cushion block 6 is set between the second support plate 1122 and the first arm 111, and the first cushion block 5 and the second cushion block 6 are both arc-shaped; the first cushion block 5 and the second cushion block 6 are respectively located on both sides of the rotating shaft 4, and the first arm 111 is padded by the second cushion block 6 and pressed down by the first cushion block 5, so that the first arm 111 is slightly tilted upward, that is, the second arm 112 is parallel to the ground, and the angle between the first arm 111 and the ground is 2°. The angle between the first arm 111 and the ground is an elevation angle. The existence of this elevation angle enables the first arm 111 to sag when it is affected by the weight of the vehicle, and the lifting plate 3 can still lift the vehicle horizontally or at a slightly upward angle to lift the vehicle, so that the vehicle lifting is more stable; when adjusting the angle between the first arm 111 and the second arm 112, the first arm 111 always contacts the arc-shaped first pad 5 and the second pad 6 during the rotation process.

[0055] See also Figure 3 In order to flexibly adjust the length of the lifting arm, the second arm 112 is a telescopic arm. The second arm 112 includes an outer tube 1128 and an inner tube 1129. The bottom of the end of the outer tube 1128 is wrapped with a first reinforcing plate 7, and the bottom of the end of the inner tube 1129 is wrapped with a second reinforcing plate 8. The purpose of the first reinforcing plate 7 is to strengthen the bearing capacity of the end of the outer tube 1128, and the purpose of the second reinforcing plate 8 is to strengthen the bearing capacity of the end of the inner tube 1129.

[0056] Example 2

[0057] Ginseng Figures 7 to 9 As shown, on the basis of Example 1, in order to further improve the lifting safety of the column lift and prevent the defects of false lifting or even falling off, in Example 2, the lifting plate 3 includes a lifting base 31 and a tray 32; the lifting base 31 includes a sleeve portion 311 and a support portion 312; the tray 32 includes a support plate 321 and a guide rod 322, and the guide rod 322 slides along the through hole of the sleeve portion 311; a disc spring 9 is arranged between the support plate 321 and the support portion 312; a first annular step 313 is arranged on the support portion 312, and the first annular step 313 is connected to the sleeve portion 311; a second annular step 323 is arranged on the guide rod 322, and a proximity sensor is arranged between the second annular step 323 and the first annular step 313.

[0058] Specifically, see Figure 1The end of each articulated arm of the two-post lift is provided with a lifting plate 3. After the four lifting points of the vehicle chassis are accurately positioned simultaneously in the manner of Example 1, when the lifting plates 3 of this embodiment are used, when the four lifting plates 3 lift the vehicle chassis, the lifting plate 3 that first contacts the lifting point of the vehicle chassis is compressed, and then the remaining lifting plates 3 are able to contact the lifting points and lift. This enables the four lifting plates 3 to lift simultaneously with the lifting force meeting the requirements, so that the vehicle is in a level state, thereby preventing the vehicle from being lifted in vain or even falling off.

[0059] See also Figures 7 to 9 A first annular step 313 is provided on the support portion 312, and the first annular step 313 is connected to the sleeve portion 311. A second annular step 323 is provided on the guide rod 322, and a proximity sensor is provided between the second annular step 323 and the first annular step 313. The specific implementation principle of the proximity sensor is as follows: a conductive needle is provided on the second annular step 323. When the conductive needle touches a conductor, such as the bottom wall of the first annular step 313, during the downward pressing of the support plate 321, the conductive needle conducts a proximity sensor signal, indicating that the support plate 321 is not under false support. To more quickly indicate whether the support plate 321 is under false support, it is set that when the support plate 321 is subjected to a pressure of not less than 200kg, the disc spring 9 is compressed to the extent that the conductive needle conducts the proximity sensor signal. If the support plate 321 is subjected to a pressure of less than 200kg, the disc spring 9 is compressed to the extent that the conductive needle conducts the proximity sensor signal, and a buzzer signal is emitted to the outside world, requiring the operator to make adjustments before lifting can be performed.

[0060] It should be further explained that the disc spring 9 has high rigidity and strong buffering and vibration absorption capabilities, and can withstand large loads with small deformation. In view of the relatively narrow distance between the support plate 321 and the support portion 312, the disc spring 9 is selected, and a proximity sensor is used between the concave first annular step 313 and the second annular step 323. The concave first annular step 313 increases the installation space of the proximity sensor. The characteristics of the disc spring 9, the narrow distance range for setting the proximity sensor, and the concave first annular step 313 jointly ensure the virtual support warning function of the lifting plate 3.

[0061] The column lift with articulated arms disclosed in this embodiment has the same technical solutions as those in Example 1. Please refer to Example 1 and will not repeat them here.

[0062] Example 3

[0063] The difference from Example 2 is that a warning line 324 is provided on the guide rod 322. When the disc spring 9 is not under pressure, the guide rod 322 extends out of the sleeve portion 311. A warning line 324 is provided on the guide rod 322. The warning line 324 is blocked by the sleeve portion 311 when the disc spring 9 is not under pressure. When the support plate 321 is subjected to a pressure of not less than 200 kg, the disc spring 9 is compressed to the extent that the warning line 324 is just exposed. If the support plate 321 is subjected to a pressure of less than 200 kg, the disc spring 9 is not compressed to the extent that the warning line 324 is not exposed. When the operator fails to see the warning line 324 of any pallet, it proves that there is a false support situation. Adjustments need to be made until all the warning lines 324 are seen before the lift can be started to prevent the vehicle from overturning and falling, so as to ensure safety.

[0064] The column lift with articulated arms disclosed in this embodiment has the same technical solutions as those in Example 2. Please refer to Example 2 and will not repeat them here.

Claims

1. A two-post lift with articulated arms, characterized in that: including a first column and a second column; A first articulated arm and a second articulated arm are symmetrically arranged on both sides of the first column, and a lifting plate is respectively arranged at the ends of the first articulated arm and the second articulated arm; A third joint arm and a fourth joint arm are symmetrically arranged on both sides of the second column, and a lifting plate is respectively arranged at the ends of the third joint arm and the fourth joint arm; The first articulated arm, the second articulated arm, the third articulated arm and the fourth articulated arm respectively include a first arm and a second arm, the first arm and the second arm are hinged, and the ratio of the length of the first arm to the length of the second arm is 1:5; Rotating one or more of the first arms to align with a lifting point of the battery-powered vehicle for lifting; A first support plate and a second support plate are respectively provided at the top and bottom of the second arm, and a first cushion block is provided between the first support plate and the first arm; Disposing a second spacer between the second support plate and the first arm; The first arm is arranged between the first support plate and the second support plate, and passes through the first support plate, the first arm and the second support plate in sequence through the rotating shaft; The first cushion block and the second cushion block are respectively located on both sides of the rotating shaft; The second arm is parallel to the ground, and the angle between the first arm and the ground is 2°; The first arm is tilted upwards, and when the first arm is acted upon by the weight of the vehicle, the lifting plate lifts the vehicle horizontally or at a slightly upward angle.

2. The two-post lift with articulated arms according to claim 1, wherein: The second arm is hinged to the column.

3. The two-post lift with articulated arms according to claim 1, wherein: A semicircular gear is provided at the end of the first arm; A T-shaped defective portion is provided at the end of the second arm, a T-shaped tooth block is provided in the T-shaped defective portion, and the T-shaped tooth block cooperates with the semicircular gear; A waist-shaped hole is provided on the side of the second arm, the waist-shaped hole is connected to the T-shaped defective portion, and a handle is provided on the side of the T-shaped tooth block, the handle extending out of the waist-shaped hole; A spring is provided between the T-shaped tooth block and the T-shaped defective portion.

4. A two-post lift with articulated arms according to any one of claims 1 to 3, characterized in that: The second arm is a telescopic arm.

5. The two-post lift with articulated arms according to claim 1, wherein: The first cushion block and the second cushion block are both arc-shaped.

6. The two-post lift with articulated arms according to claim 4, wherein: The second arm includes an outer tube and an inner tube. A first reinforcing plate is provided around the bottom of an end portion of the outer tube, and a second reinforcing plate is provided around the bottom of an end portion of the inner tube.

7. The two-post lift with articulated arms according to claim 4, wherein: The lifting plate includes a lifting base and a tray; The lifting base includes a sleeve portion and a supporting portion; The tray includes a support plate and a guide rod, and the guide rod slides along the through hole of the sleeve portion; a disc spring is provided between the support plate and the support portion; A first annular step is provided on the support portion, wherein the first annular step is communicated with the sleeve portion; A second annular step is provided on the guide rod, and a proximity sensor is provided between the second annular step and the first annular step.

8. The two-post lift with articulated arms according to claim 4, wherein: The lifting plate includes a lifting base and a tray; The lifting base includes a sleeve portion and a supporting portion; The tray includes a support plate and a guide rod, and the guide rod slides along the through hole of the sleeve portion; a disc spring is provided between the support plate and the support portion; A warning line is provided on the guide rod.

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