Jacking device for automobile maintenance

Abstract

The utility model provides a jacking device for automobile maintenance, which relates to the technical field of automobile maintenance and comprises a base, a hydraulic cylinder is fixedly connected to the top of the base, a hydraulic rod is slidably connected to the inner wall of the hydraulic cylinder, a screw rod is in threaded connection to the inner wall of the hydraulic rod, one end of the screw rod is fixedly connected with a jacking block, and the other end of the screw rod is fixedly connected with the jacking block. A protective device is arranged on the outer surface of the hydraulic cylinder and comprises a baffle, the sleeve and the baffle are arranged, and under the action of the threaded rod, the threaded rod can drive the sleeve to slide upwards on the outer surface of the hydraulic cylinder till the top of the baffle is flush with the top of the sleeve. And the sleeve and the baffle can shield and protect the outer surface and the top of the hydraulic rod, so that the problems that the friction force between the hydraulic rod and the inner wall of the hydraulic cylinder is increased and the hydraulic cylinder is damaged due to the fact that impurities enter the hydraulic cylinder are solved, and normal use of the jack is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of automotive repair technology, and in particular to an automotive repair lifting device. Background Technology

[0002] A jack is a lightweight lifting device that uses a rigid lifting component as its working device to lift heavy objects within a short stroke of the top support. Jacks are commonly used in operations such as car maintenance and tire replacement. They are lightweight, sturdy, flexible, and reliable, and can be carried and operated by one person.

[0003] When using a jack to lift a car, the hydraulic rod is mainly used to lift the car. When not using the jack, the hydraulic rod is usually located inside the hydraulic cylinder. However, when lifting the car, the hydraulic rod is exposed to the outside. During car repairs, a lot of dust, gravel, and other debris fall from the car chassis. If these fall onto the hydraulic rod, they can easily be adhered to by the lubricating oil on the hydraulic rod. Smaller debris can easily enter the hydraulic cylinder along with the hydraulic rod, potentially increasing the friction between the hydraulic rod and the inner wall of the hydraulic cylinder. In severe cases, this can even damage the hydraulic cylinder, making it difficult to use the jack properly. Summary of the Invention

[0004] This utility model proposes an automotive maintenance jacking device to address the problem that impurities on the car chassis can easily enter the hydraulic cylinder along with the hydraulic rod, potentially increasing the friction between the hydraulic rod and the inner wall of the hydraulic cylinder, and even causing damage to the hydraulic cylinder, thus hindering the normal use of the jack.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automotive repair lifting device, comprising a base, a hydraulic cylinder fixedly connected to the top of the base, a hydraulic rod slidably connected to the inner wall of the hydraulic cylinder, a lead screw threadedly connected to the inner wall of the hydraulic rod, a top block fixedly connected to one end of the lead screw, a protective device provided on the outer surface of the hydraulic cylinder, the protective device including a baffle, the outer surface of one end of the hydraulic rod fixedly connected to the inner wall of the baffle, a sleeve fitted on the outer surface of the hydraulic cylinder, the size and shape of the outer surface of the baffle matching the size and shape of the inner wall of the sleeve, an auxiliary block provided on the top of the outer surface of the sleeve, a threaded rod provided on the inner wall of the auxiliary block, a threaded cylinder threadedly connected to the outer surface of the threaded rod, one end of the threaded cylinder fixedly connected to the top of the base, an operating block provided on one side of the top of the base, a rocker arm inserted into the inner wall of the operating block, an anti-slip device provided on the outer surface of the rocker arm, the operating block and the rocker arm being used to drive the hydraulic rod to slide along the hydraulic cylinder.

[0006] The effect achieved by the above components is as follows: by setting up the sleeve and baffle, under the action of the threaded rod, rotating the threaded rod will cause the threaded rod to extend and retract on the inner wall of the threaded cylinder. During the extension and retraction process, the threaded rod will drive the sleeve connected to the auxiliary block to slide upward on the outer surface of the hydraulic cylinder until the top of the baffle is level with the top of the sleeve. At this time, the sleeve and baffle can shield and protect the outer surface and top of the hydraulic rod, which helps to prevent impurities from entering the hydraulic cylinder and causing increased friction between the hydraulic rod and the inner wall of the hydraulic cylinder and damage to the hydraulic cylinder, thus facilitating the normal use of the jack.

[0007] Preferably, a bearing is fixedly connected to the outer surface of the threaded rod, and the outer surface of the bearing is fixedly connected to the inner wall of the auxiliary block.

[0008] The effect achieved by the above components is that by setting bearings, the friction between the threaded rod and the auxiliary block can be reduced when rotating the threaded rod, making it easier to rotate the threaded rod.

[0009] Preferably, a rotating block is fixedly connected to one end of the threaded rod, and the outer surface of the rotating block is provided with a protrusion.

[0010] The effect achieved by the above components is as follows: by setting a rotating block, rotating the rotating block can drive the threaded rod to rotate. At the same time, the outer surface of the rotating block is provided with protrusions, which can effectively increase the friction of the outer surface of the rotating block and have an anti-slip effect when rotating the rotating block.

[0011] Preferably, a slide bar is fixedly connected to the outer surface of the hydraulic cylinder, and the outer surface of the slide bar is slidably connected to the inner wall of the sleeve.

[0012] The effect achieved by the above components is that, by setting the slide bar, when the sleeve moves under the action of the threaded rod, it will drive the sleeve to slide synchronously on the outer surface of the slide bar, and the slide bar can limit the movement of the sleeve.

[0013] Preferably, mounting blocks are symmetrically fixedly connected to the top of the outer surface of the sleeve, and the two sides of the auxiliary block abut against one side of the two mounting blocks respectively. Threaded pins are fixedly connected to both sides of the auxiliary block, and the outer surface of the threaded pin is inserted into the inner wall of the mounting block. Nuts are threadedly connected to the outer surface of the threaded pin.

[0014] The effect achieved by the above components is as follows: by setting a threaded pin, inserting the threaded pin into the inner wall of the mounting block, and then putting a nut on one end of the threaded pin, rotating the nut so that one side of the nut abuts against one side of the mounting block, the two mounting blocks and the auxiliary block can be fixed together, thereby fixing the auxiliary block and the sleeve together, and also facilitating the individual disassembly and replacement of the sleeve.

[0015] Preferably, the anti-slip device includes a rubber sleeve, the outer surface of which is uniformly provided with grooves, and the rubber sleeve is fitted onto the outer surface of the rocker arm.

[0016] The effect achieved by the above-mentioned components is that by setting a rubber sleeve with grooves, the friction of the outer surface of one end of the joystick can be increased, so that the joystick has an anti-slip effect when gripping it.

[0017] Preferably, the inner wall of the rubber sleeve is fixedly connected with a retaining strip, the outer surface of the rocker arm is provided with a retaining groove, and the outer surface of the retaining strip is inserted into the inner wall of the retaining groove.

[0018] The effect achieved by the above components is that by setting the locking strip and the locking groove, the rubber sleeve can be limited, which helps to prevent the rubber sleeve from rotating on the outer surface of the joystick when the joystick is held.

[0019] Preferably, a first stop is fixedly connected to the middle of the outer surface of the rocker arm, a second stop is provided at one end of the rocker arm, a bolt is inserted into the inner wall of the second stop, one end of the bolt is threaded into the inner wall of the rocker arm, and the two ends of the rubber sleeve abut against one side of the first stop and the second stop respectively.

[0020] The effect achieved by the above components is as follows: by setting the first stop and the second stop, inserting the bolt into the inner wall of the second stop, and rotating the bolt so that the bolt enters the inner wall of the rocker arm, the second stop and the rocker arm can be fixed. The first stop and the second stop can limit the rubber sleeve, which helps to prevent the rubber sleeve from sliding on the outer surface of the rocker arm.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, by setting a sleeve and a baffle, under the action of the threaded rod, the threaded rod can drive the sleeve to slide upward on the outer surface of the hydraulic cylinder until the top of the baffle is level with the top of the sleeve. The sleeve and the baffle can shield and protect the outer surface and top of the hydraulic rod, which helps to prevent impurities from entering the hydraulic cylinder and causing increased friction between the hydraulic rod and the inner wall of the hydraulic cylinder and damage to the hydraulic cylinder, thus facilitating the normal use of the jack. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the main body of this utility model.

[0024] Figure 2 This is a three-dimensional structural diagram of the protective device of this utility model.

[0025] Figure 3 This utility model Figure 2 A magnified structural diagram at point A.

[0026] Figure 4 This is a three-dimensional structural diagram of the anti-slip device of this utility model.

[0027] Legend: 1. Base; 2. Hydraulic cylinder; 3. Hydraulic rod; 4. Lead screw; 5. Top block; 6. Protective device; 61. Baffle; 62. Sleeve; 63. Auxiliary block; 64. Threaded rod; 65. Threaded cylinder; 66. Bearing; 67. Rotating block; 68. Sliding bar; 69. Mounting block; 610. Threaded pin; 611. Nut; 7. Operating block; 8. Rocker arm; 9. Anti-slip device; 91. Rubber sleeve; 92. Clamping strip; 93. Clamping groove; 94. First stop block; 95. Second stop block; 96. Bolt. Detailed Implementation

[0028] Example 1, referring to Figures 1-3 As shown, this embodiment discloses an automotive repair jacking device, including a base 1. A hydraulic cylinder 2 is fixedly connected to the top of the base 1. A hydraulic rod 3 is slidably connected to the inner wall of the hydraulic cylinder 2. A lead screw 4 is threadedly connected to the inner wall of the hydraulic rod 3. A top block 5 is fixedly connected to one end of the lead screw 4. A protective device 6 is provided on the outer surface of the hydraulic cylinder 2. The protective device 6 includes a baffle 61. The outer surface of one end of the hydraulic rod 3 is fixedly connected to the inner wall of the baffle 61. A sleeve 62 is fitted on the outer surface of the hydraulic cylinder 2. The size and shape of the outer surface of the baffle 61 are adapted to the size and shape of the inner wall of the sleeve 62. An auxiliary block 63 is provided on the top of the outer surface of the sleeve 62. A threaded rod 64 is provided inside the auxiliary block 63. The outer surface of the base 4 is threaded with a threaded cylinder 65. One end of the threaded cylinder 65 is fixedly connected to the top of the base 1. An operating block 7 is provided on one side of the top of the base 1. A rocker arm 8 is inserted into the inner wall of the operating block 7. An anti-slip device 9 is provided on the outer surface of the rocker arm 8. The rocker arm 8 is detachable and can be inserted into the operating block 7. The operating block 7 can be controlled more easily by extending the torque. The operating block 7 can directly control the inside of the hydraulic cylinder 2 through the connecting structure on the base 1. When the rocker arm 8 is pushed down to rotate the operating block 7 downward, it will drive the small piston in the connecting structure to move down and squeeze the oil at its bottom into the hydraulic cylinder 2, pushing the hydraulic rod 3 to move, thereby lifting the car chassis.

[0029] By setting up sleeve 62 and baffle 61, under the action of threaded rod 64, rotating threaded rod 64 will cause threaded rod 64 to extend and retract on the inner wall of threaded cylinder 65. During the extension and retraction process, threaded rod 64 will drive sleeve 62 connected to auxiliary block 63 to slide upward on the outer surface of hydraulic cylinder 2 until the top of baffle 61 is level with the top of sleeve 62. At this time, sleeve 62 and baffle 61 can shield and protect the outer surface and top of hydraulic rod 3, which helps to prevent impurities from entering the interior of hydraulic cylinder 2, causing increased friction between hydraulic rod 3 and the inner wall of hydraulic cylinder 2 and damage to hydraulic cylinder 2, thus facilitating the normal use of jack.

[0030] Reference Figure 2 and Figure 3 As shown, optionally, a bearing 66 is fixedly connected to the outer surface of the threaded rod 64, and the outer surface of the bearing 66 is fixedly connected to the inner wall of the auxiliary block 63. By setting the bearing 66, the friction between the threaded rod 64 and the auxiliary block 63 can be reduced when rotating the threaded rod 64, making it easier to rotate the threaded rod 64. A rotating block 67 is fixedly connected to one end of the threaded rod 64. The outer surface of the rotating block 67 is provided with protrusions. By setting the rotating block 67, rotating the rotating block 67 can drive the threaded rod 64 to rotate. At the same time, the protrusions on the outer surface of the rotating block 67 can effectively increase the friction on the outer surface of the rotating block 67, which has an anti-slip effect when rotating the rotating block 67.

[0031] Reference Figure 2 and Figure 3 As shown, optionally, a slide bar 68 is fixedly connected to the outer surface of the hydraulic cylinder 2. The outer surface of the slide bar 68 is slidably connected to the inner wall of the sleeve 62. By setting the slide bar 68, when the sleeve 62 moves under the action of the threaded rod 64, it will drive the sleeve 62 to slide synchronously on the outer surface of the slide bar 68. The slide bar 68 can play a limiting and guiding role for the sleeve 62.

[0032] Optionally, mounting blocks 69 are symmetrically fixedly connected to the top of the outer surface of the sleeve 62. The two sides of the auxiliary block 63 abut against one side of the two mounting blocks 69 respectively. Threaded pins 610 are fixedly connected to both sides of the auxiliary block 63. The outer surface of the threaded pin 610 is inserted into the inner wall of the mounting block 69. Nuts 611 are threadedly connected to the outer surface of the threaded pin 610. By setting the threaded pin 610, inserting the threaded pin 610 into the inner wall of the mounting block 69, and then putting the nut 611 on one end of the threaded pin 610, rotating the nut 611 so that one side of the nut 611 abuts against one side of the mounting block 69, the two mounting blocks 69 and the auxiliary block 63 can be fixed, thereby fixing the auxiliary block 63 and the sleeve 62. It also facilitates the individual disassembly and replacement of the sleeve 62.

[0033] Reference Figure 4As shown, optionally, the anti-slip device 9 includes a rubber sleeve 91, the outer surface of which is uniformly provided with grooves. The rubber sleeve 91 is fitted onto the outer surface of the rocker arm 8. By providing the rubber sleeve 91 with grooves, the friction of the outer surface of one end of the rocker arm 8 can be increased, so that the rocker arm 8 has an anti-slip effect when gripped.

[0034] Reference Figure 4 As shown, a retaining strip 92 is fixedly connected to the inner wall of the rubber sleeve 91, and a retaining groove 93 is provided on the outer surface of the rocker arm 8. The outer surface of the retaining strip 92 is inserted into the inner wall of the retaining groove 93. By setting the retaining strip 92 and the retaining groove 93, the rubber sleeve 91 can be limited, which helps to prevent the rubber sleeve 91 from rotating on the outer surface of the rocker arm 8 when the rocker arm 8 is held.

[0035] Optionally, a first stop 94 is fixedly connected to the middle of the outer surface of the rocker arm 8, and a second stop 95 is provided at one end of the rocker arm 8. A bolt 96 is inserted into the inner wall of the second stop 95, and one end of the bolt 96 is threaded into the inner wall of the rocker arm 8. The two ends of the rubber sleeve 91 abut against one side of the first stop 94 and the second stop 95, respectively. By setting the first stop 94 and the second stop 95, inserting the bolt 96 into the inner wall of the second stop 95, and rotating the bolt 96, the second stop 95 and the rocker arm 8 can be fixed together. The first stop 94 and the second stop 95 can limit the rubber sleeve 91, which helps to prevent the rubber sleeve 91 from sliding on the outer surface of the rocker arm 8.

[0036] Working principle: When the hydraulic rod 3 is raised to a suitable height, rotating the rotating block 67 drives the threaded rod 64 to extend and retract on the inner wall of the threaded cylinder 65. Under the limit of the slide bar 68, the threaded rod 64 will drive the sleeve 62 connected to the auxiliary block 63 to slide upward on the outer surface of the hydraulic cylinder 2 until the top of the baffle 61 is level with the top of the sleeve 62. At this time, the sleeve 62 and the baffle 61 can shield and protect the outer surface and top of the hydraulic rod 3, which helps to prevent impurities from entering the hydraulic cylinder 2. When the sleeve 62 needs to be installed, the sleeve 62 is placed on the surface of the hydraulic cylinder 2, and the threaded pin 610 is inserted into the inner wall of the mounting block 69. Then, the nut 611 is placed on one end of the threaded pin 610. Rotating the nut 611 makes one side of the nut 611 abut against one side of the mounting block 69, which can fix the two mounting blocks 69 and the auxiliary block 63, and thus fix the auxiliary block 63 and the sleeve 62. When the rubber sleeve 91 needs to be installed, the rubber sleeve 91 is placed on the outer surface of the rocker arm 8, so that one end of the rubber sleeve 91 abuts against one side of the first stop 94, and the locking strip 92 is inserted into the inner wall of the locking groove 93. Then, the bolt 96 is inserted into the inner wall of the second stop 95, and the bolt 96 is rotated so that the bolt 96 enters the inner wall of the rocker arm 8, which can fix the second stop 95 and the rocker arm 8. The first stop 94 and the second stop 95 can limit the rubber sleeve 91. The rubber sleeve 91 with grooves can increase the friction of the outer surface of one end of the rocker arm 8, so that it has an anti-slip effect when holding the rocker arm 8.

Claims

1. A vehicle maintenance lifting device, comprising a base (1), characterized in that: A hydraulic cylinder (2) is fixedly connected to the top of the base (1). A hydraulic rod (3) is slidably connected to the inner wall of the hydraulic cylinder (2). A lead screw (4) is threadedly connected to the inner wall of the hydraulic rod (3). A top block (5) is fixedly connected to one end of the lead screw (4). A protective device (6) is provided on the outer surface of the hydraulic cylinder (2). The protective device (6) includes a baffle (61). The outer surface of one end of the hydraulic rod (3) is fixedly connected to the inner wall of the baffle (61). A sleeve (62) is fitted on the outer surface of the hydraulic cylinder (2). The size and shape of the outer surface of the baffle (61) are the same as the size and shape of the inner wall of the sleeve (62). The sleeve (62) is fitted with an auxiliary block (63) on the top of its outer surface. The inner wall of the auxiliary block (63) is fitted with a threaded rod (64). The outer surface of the threaded rod (64) is threaded with a threaded cylinder (65). One end of the threaded cylinder (65) is fixedly connected to the top of the base (1). An operating block (7) is provided on one side of the top of the base (1). A rocker arm (8) is inserted into the inner wall of the operating block (7). An anti-slip device (9) is provided on the outer surface of the rocker arm (8). The operating block (7) and the rocker arm (8) are used to drive the hydraulic rod (3) to slide along the hydraulic cylinder (2).

2. The automobile maintenance jacking device according to claim 1, characterized in that: The outer surface of the threaded rod (64) is fixedly connected to a bearing (66), and the outer surface of the bearing (66) is fixedly connected to the inner wall of the auxiliary block (63).

3. The automobile maintenance jacking device according to claim 1, characterized in that: One end of the threaded rod (64) is fixedly connected to a rotating block (67), and the outer surface of the rotating block (67) is provided with protrusions.

4. The automobile maintenance jacking device according to claim 1, characterized in that: The outer surface of the hydraulic cylinder (2) is fixedly connected to a slide bar (68), and the outer surface of the slide bar (68) is slidably connected to the inner wall of the sleeve (62).

5. The automobile maintenance jacking device according to claim 1, characterized in that: The top of the outer surface of the sleeve (62) is symmetrically fixedly connected with mounting blocks (69). The two sides of the auxiliary block (63) abut against one side of the two mounting blocks (69) respectively. The two sides of the auxiliary block (63) are fixedly connected with threaded pins (610). The outer surface of the threaded pin (610) is inserted into the inner wall of the mounting block (69). The outer surface of the threaded pin (610) is threaded with a nut (611).

6. The automobile maintenance jacking device according to claim 1, characterized in that: The anti-slip device (9) includes a rubber sleeve (91), the outer surface of which is uniformly provided with grooves, and the rubber sleeve (91) is fitted onto the outer surface of the rocker arm (8).

7. The automobile maintenance jacking device according to claim 6, characterized in that: The inner wall of the rubber sleeve (91) is fixedly connected with a retaining strip (92), and the outer surface of the rocker arm (8) is provided with a retaining groove (93), and the outer surface of the retaining strip (92) is inserted into the inner wall of the retaining groove (93).

8. A car maintenance jacking device according to claim 6, characterized in that: A first stop (94) is fixedly connected to the middle of the outer surface of the rocker arm (8). A second stop (95) is provided at one end of the rocker arm (8). A bolt (96) is inserted into the inner wall of the second stop (95). One end of the bolt (96) is threaded into the inner wall of the rocker arm (8). The two ends of the rubber sleeve (91) abut against one side of the first stop (94) and the second stop (95), respectively.

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