Worm gear lead screw elevator device

Abstract

The utility model discloses a worm gear lead screw elevator device, and relates to the technical field of lead screw elevators. Comprising a mounting plate, a worm and gear transmission box arranged at the top of the mounting plate and a lifting lead screw matched with the worm and gear transmission box, a top seat is mounted at the top of the lifting lead screw, a fixing cylinder through which the lifting lead screw penetrates is fixedly connected to the top of the worm and gear transmission box, and a soft protective sleeve used for protecting the lifting lead screw is arranged between the fixing cylinder and the top seat. The bottom of the mounting plate is fixedly connected with a steel casing, and the bottom end of the lifting lead screw can extend into an inner cavity of the steel casing. According to the worm gear lead screw lifter device, the lower end of the lifting lead screw is protected through the steel protection cylinder, the upper end of the lifting lead screw is protected through the soft protection sleeve, and in the using process of the lifter, the situation that dust is attached to the lifting lead screw, and consequently friction force of the lead screw is increased can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of screw jacks, in particular to a worm screw jack device. Background Art

[0002] Worm screw jacks are widely used in industries such as machinery, metallurgy, construction, and water conservancy equipment. They have functions such as lifting, lowering, advancing with the help of accessories, flipping, and various height position adjustments. Worm screw jacks are a basic lifting component, with many advantages such as compact structure, small size, light weight, wide power sources, no noise, convenient installation, flexible use, multiple functions, multiple matching forms, high reliability, and long service life.

[0003] For a worm screw jack with a screw rod lifting type, since its screw rod is often exposed outside and there is lubricating oil on its surface, in some harsh working conditions, dust is very easy to adhere to the screw rod, which will increase the friction of the screw rod over time and is not conducive to the overall operation of the jack. Summary of the Utility Model

[0004] The utility model provides a worm screw jack device to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical solution: A worm screw jack device includes a mounting plate, a worm and worm gear transmission box arranged on the top of the mounting plate, and a lifting screw rod matched with the worm and worm gear transmission box. A top seat is installed at the top of the lifting screw rod. A fixed cylinder through which the lifting screw rod passes is fixedly connected to the top of the worm and worm gear transmission box. A soft protective sleeve for protecting the lifting screw rod is arranged between the fixed cylinder and the top seat. A steel protective cylinder is fixedly connected to the bottom of the mounting plate. The bottom end of the lifting screw rod can extend into the inner cavity of the steel protective cylinder.

[0006] Further, the top seat is in a T shape. The top end of the soft protective sleeve is installed on the top seat through a clamp, and the bottom end of the soft protective sleeve is installed on the fixed cylinder through a clamp.

[0007] Further, annular grooves are formed on the outer walls of the bottom end of the top seat and the outer wall of the fixed cylinder. Sealing ribs that can cooperate with the grooves are formed on the inner walls of both ends of the soft protective sleeve. Pressing grooves that cooperate with the sealing ribs are formed on the outer walls of both ends of the soft protective sleeve. The clamp is installed in the pressing groove.

[0008] Further, a connecting groove is formed at the bottom end of the top seat. A connecting column that is matched and connected with the connecting groove is fixedly connected to the top end of the lifting screw rod.

[0009] Further, a guide rod is fixedly connected to the bottom inner wall of the steel protective cylinder. A guide groove that is slidably matched with the guide rod is formed at the bottom end of the lifting screw rod.

[0010] Furthermore, a base is fixedly connected to the bottom of the steel casing, and positioning holes are provided in the base.

[0011] Compared with the prior art, the utility model provides a worm and screw lift device, which has the following beneficial effects: the worm and screw lift device protects the lower end of the lifting screw through a steel casing, and protects the upper end of the lifting screw through a soft protective sleeve, which can avoid dust adhering to the lifting screw during the use of the lift, thereby increasing the friction of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the utility model;

[0013] Figure 2 is a schematic structural diagram of the utility model without the soft protective sleeve;

[0014] Figure 3 is a schematic plan view of the utility model;

[0015] Figure 4 is an enlarged schematic view of part A of the utility model.

[0016] In the figure: 1, mounting plate; 2, worm and worm gear transmission box; 3, lifting screw; 4, steel casing; 5, top seat; 6, fixed cylinder; 7, soft protective sleeve; 8, sealing rib; 9, pressing groove; 10, clamp; 11, connecting column; 12, connecting groove; 13, guide rod; 14, base; 15, groove; 16, positioning hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-4 , the utility model discloses a worm and screw lift device, including a mounting plate 1, a worm and worm gear transmission box 2 arranged on the top of the mounting plate 1, and a lifting screw 3 cooperating with the worm and worm gear transmission box. A top seat 5 is installed at the top of the lifting screw 3. A fixed cylinder 6 through which the lifting screw 3 passes is fixedly connected to the top of the worm and worm gear transmission box 2. A soft protective sleeve 7 for protecting the lifting screw 3 is arranged between the fixed cylinder 6 and the top seat 5. A steel casing 4 is fixedly connected to the bottom of the mounting plate 1, and the bottom end of the lifting screw 3 can extend into the inner cavity of the steel casing 4.

[0019] The soft protective sleeve 7 can be any telescopic hose such as a PVC telescopic hose, a fiberglass cloth telescopic tube, an aluminum foil composite steel wire hose, or a corrugated hose. It can perform corresponding telescoping during the lifting and lowering of the lifting screw rod 3 to protect the lifting screw rod 3.

[0020] Specifically, the top seat 5 is T-shaped. The top end of the soft protective sleeve 7 is installed on the top seat 5 through a clamp 10, and the bottom end of the soft protective sleeve 7 is installed on the fixed cylinder 6 through a clamp 10.

[0021] An annular groove 15 is provided on the outer wall of the bottom end of the top seat 5 and the outer wall of the fixed cylinder 6. Sealing ribs 8 that can cooperate with the groove 15 are formed on the inner walls at both ends of the soft protective sleeve 7. Pressing grooves 9 that cooperate with the sealing ribs 8 are formed on the outer walls at both ends of the soft protective sleeve 7. The clamp 10 is installed in the pressing groove 9.

[0022] A connection groove 12 is provided at the bottom end of the top seat 5. The top end of the lifting screw rod 3 is fixedly connected with a connection column 11 that is matched and connected with the connection groove 12.

[0023] In this embodiment, an installation hole is provided at the top of the top seat 5. The top seat 5 is connected to the corresponding lifting platform through the cooperation of the installation hole and bolts.

[0024] The connection column 11 can be a stud, and the connection groove 12 is a threaded groove provided to match it. Of course, after the connection column 11 is inserted into the connection groove 12 at the bottom of the top seat 5, it can also be connected through the cooperation of a pin hole and a pin.

[0025] When installing the soft protective sleeve 7, the top seat 5 is detached from the connection column 11. The bottom end of the soft protective sleeve 7 is installed on the fixed cylinder 6 through the cooperation of the clamp 10, the pressing groove 9, the sealing rib 8, and the groove 15. Then the top seat 5 is installed on the connection column 11, and then the top end of the soft protective sleeve 7 is installed on the top seat 5 through the cooperation of the clamp 10, the pressing groove 9, the sealing rib 8, and the groove 15, so that the soft protective sleeve 7 can protect the lifting screw rod 3.

[0026] Specifically, a guide rod 13 is fixedly connected to the bottom inner wall of the steel casing 4. A guide groove that is slidably matched with the guide rod 13 is provided at the bottom end of the lifting screw rod 3.

[0027] In this embodiment, the guide rod 13 is integrally prismatic, and the shape of the guide groove matches it. The cooperation of the guide rod 13 and the guide groove can guide the lifting and lowering of the lifting screw rod 3.

[0028] Specifically, a base 14 is fixedly connected to the bottom of the steel casing 4. A positioning hole 16 is provided on the base 14.

[0029] In this embodiment, the base 14 can be installed at the corresponding position through the cooperation of the positioning holes 16 and bolts.

[0030] In summary, for this worm gear screw jack device, the lower end of the lifting screw 3 is protected by the steel casing 4, and the upper end of the lifting screw 3 is protected by the soft protective sleeve 7, which can avoid dust adhering to the lifting screw 3 during the use of the jack, thereby increasing the friction of the screw.

[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A worm screw lift device, comprising a mounting plate (1), a worm and worm gear transmission box (2) arranged on the top of the mounting plate (1), and a lifting screw rod (3) cooperating with the worm and worm gear transmission box, characterized in that: A top seat (5) is installed at the top of the lifting screw rod (3). A fixed cylinder (6) through which the lifting screw rod (3) passes is fixedly connected to the top of the worm and worm gear transmission box (2). A soft protective sleeve (7) for protecting the lifting screw rod (3) is provided between the fixed cylinder (6) and the top seat (5). A steel protective cylinder (4) is fixedly connected to the bottom of the mounting plate (1). The bottom end of the lifting screw rod (3) can extend into the inner cavity of the steel protective cylinder (4).

2. The worm screw lift device according to claim 1, characterized in that: The top seat (5) is in a T shape. The top end of the soft protective sleeve (7) is installed on the top seat (5) through a clamp (10). The bottom end of the soft protective sleeve (7) is installed on the fixed cylinder (6) through a clamp (10).

3. The worm screw lift device according to claim 2, characterized in that: Annular grooves (15) are formed on the outer walls of the bottom ends of the top seat (5) and the fixed cylinder (6). Sealing ribs (8) that can cooperate with the grooves (15) are formed on the inner walls at both ends of the soft protective sleeve (7). Pressing grooves (9) that cooperate with the sealing ribs (8) are formed on the outer walls at both ends of the soft protective sleeve (7). The clamp (10) is installed in the pressing groove (9).

4. A worm gear screw jack device according to claim 2, characterized in that: A connecting groove (12) is formed at the bottom end of the top seat (5). A connecting column (11) that is matched and connected with the connecting groove (12) is fixedly connected to the top end of the lifting screw rod (3).

5. A worm screw lift device according to claim 1, characterized in that: A guide rod (13) is fixedly connected to the bottom inner wall of the steel protective cylinder (4). A guide groove that is slidably matched with the guide rod (13) is formed at the bottom end of the lifting screw rod (3).

6. A worm screw lift device according to claim 1, characterized in that: A base (14) is fixedly connected to the bottom of the steel protective cylinder (4). A positioning hole (16) is formed in the base (14).

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