Tensioning device with adjustable internal tensioning force at tail part of elevator

Abstract

The utility model discloses an elevator tail tensioning device with adjustable internal tensioning force, which comprises a tail transmission shaft, a counterweight synchronous frame and a plurality of balancing weights, bearing seats are arranged at two ends of the tail transmission shaft, the counterweight synchronous frame is arranged on the bearing seats, and the balancing weights are arranged on the counterweight synchronous frame. And the balancing weights can be increased or decreased according to the height of the elevator, so that the tensioning force of running parts of the elevator is guaranteed, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a tensioning device with adjustable internal tension at the tail of an elevator. Background Technique

[0002] The bucket elevator is a commonly used vertical lifting equipment, suitable for vertical lifting of dry bulk powder materials or materials.

[0003] The bucket elevator consists of components such as a running part, a driving device, a head device, a middle casing, and a tail device. When working, the hopper scoops up the material from the lower storage, lifts it to the top along with the conveyor belt or chain, bypasses the top wheel and then flips downwards, and the bucket elevator pours the material into the receiving trough.

[0004] The tail device is an important part of the elevator, mainly composed of components such as a tail casing, a tail drive, and a tail tensioning device. The tail tensioning device is generally divided into two forms: external tensioning and internal tensioning at the tail. For the external tensioning at the tail, using the lever principle, the counterweight device is outside the tail casing, and the size of the counterweight can be adjusted, but the sealing performance is poor, and dust leakage will occur if not repaired in time; for the internal tensioning at the tail, the counterweight wheel is installed on the tail drive shaft. Since the entire tensioning device is inside the casing, there will be no dust leakage phenomenon. However, since the counterweight wheel is generally installed on the tail drive shaft, due to space limitations, the counterweight is restricted, and when the height of the elevator exceeds 35m, the tension will be insufficient. Summary of the Invention

[0005] The purpose of the utility model is to solve the problems in the prior art, and propose a tensioning device with adjustable internal tension at the tail of an elevator, which can increase or decrease the counterweight blocks according to the height of the elevator to ensure the tension of the running parts of the elevator, and has a large adaptation range.

[0006] To achieve the above purpose, the utility model proposes a tensioning device with adjustable internal tension at the tail of an elevator, including a tail drive shaft, a counterweight synchronization frame, and several counterweight blocks. Both ends of the tail drive shaft are provided with bearing seats, the bearing seats are provided with a counterweight synchronization frame, and the counterweight synchronization frame is provided with counterweight blocks.

[0007] Preferably, the counterweight synchronization frame includes a counterweight fixing seat, and both ends of the counterweight fixing seat are provided with support seats.

[0008] Preferably, both the counterweight fixing seat and the support seats are made of channel steel structures.

[0009] Preferably, several screw rods are provided on the counterweight fixing seat, and fastening nuts matching with the screw rods are provided on the screw rods to press and fix the counterweight blocks sleeved on the screw rods on the counterweight fixing seat.

[0010] Preferably, the counterweight block is provided with a hoisting screw hole.

[0011] Preferably, a reinforcing connecting body is provided at the connection between the counterweight fixing seat and the support seat.

[0012] Preferably, guide rails fixedly connected to the corresponding support seats are provided on both sides of the bearing seat.

[0013] Preferably, two counterweight wheels are provided on the tail transmission shaft, one in the front and the other in the back.

[0014] The beneficial effects of the present utility model: By providing bearing seats at both ends of the tail transmission shaft, a counterweight synchronization frame on the bearing seat, and a counterweight block on the counterweight synchronization frame, the present utility model realizes the utilization of the space above the tail transmission shaft, thereby meeting the requirement of a greater tensioning force. Compared with the prior art, it can increase or decrease the counterweight block according to the height of the hoist to ensure the tensioning force of the operating components of the hoist, and has a large adaptation range.

[0015] The counterweight synchronization frame ensures that the two bearing seats can move up and down synchronously, preventing the bearing seats from skewing and getting stuck on the guide rails.

[0016] The features and advantages of the present utility model will be described in detail through embodiments in conjunction with the accompanying drawings. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a tensioning device with adjustable internal tensioning force at the tail of a hoist according to the present utility model.

[0018] In the figure: 1 - tail transmission shaft, 2 - counterweight synchronization frame, 3 - counterweight block, 4 - bearing seat, 5 - hoisting screw hole, 6 - guide rail, 7 - counterweight wheel, 21 - counterweight fixing seat, 22 - support seat, 23 - screw rod, 24 - fastening nut, 25 - reinforcing connecting body. Detailed Embodiments

[0019] Refer to Figure 1 , a tensioning device with adjustable internal tensioning force at the tail of a hoist according to the present utility model, includes a tail transmission shaft 1, a counterweight synchronization frame 2, and a plurality of counterweight blocks 3. Bearing seats 4 are provided at both ends of the tail transmission shaft 1, a counterweight synchronization frame 2 is provided on the bearing seats 4, and a counterweight block 3 is provided on the counterweight synchronization frame 2.

[0020] The counterweight synchronization frame 2 includes a counterweight fixing seat 21, and support seats 22 are provided at both ends of the counterweight fixing seat 21.

[0021] Both the counterweight fixing seat 21 and the support seat 22 are of channel steel structure.

[0022] A plurality of screw rods 23 are provided on the counterweight fixing base 21, and fastening nuts 24 that cooperate with the screw rods 23 are provided on the screw rods 23 to press and fix the counterweight blocks 3 sleeved on the screw rods 23 on the counterweight fixing base 21, facilitating the stacked fixing of the counterweight blocks 3.

[0023] Lifting screw holes 5 are provided on the counterweight blocks 3, facilitating the lifting of the counterweight blocks.

[0024] A reinforcing connection body 25 is provided at the connection between the counterweight fixing base 21 and the support base 22 to improve the connection strength.

[0025] Guide rails 6 fixedly connected to the corresponding support bases 22 are provided on both sides of the bearing seat 4.

[0026] Two counterweight wheels 7, one in front and one behind, are provided on the tail drive shaft 1 for basic counterweight, which can meet the tensioning requirements of most hoists. When the lifting height of the hoist is relatively large, counterweight blocks 3 are added to the counterweight synchronization frame 2 to meet the counterweight requirements of hoists at different heights.

[0027] The working process of the present utility model:

[0028] During the working process of a tensioning device with adjustable internal tension at the tail of a hoist according to the present utility model, by providing bearing seats 4 at both ends of the tail drive shaft 1, a counterweight synchronization frame 2 is provided on the bearing seat 4, and counterweight blocks 3 are provided on the counterweight synchronization frame 2, the space above the tail drive shaft 1 is utilized, thereby meeting the demand for a greater tensioning force. When the counterweight wheels 7 cannot meet the tensioning requirement, a corresponding number of counterweight blocks 3 are sleeved on the screw rods 23, and then the fastening nuts 24 are tightened.

[0029] The above embodiments are illustrative of the present utility model, not restrictive thereof. Any scheme obtained by simply transforming the present utility model belongs to the protection scope of the present utility model.

Claims

1. A tensioning device with adjustable internal tensioning force at the tail of a hoist, characterized in that: The invention comprises a tail transmission shaft (1), a counterweight synchronous frame (2) and a plurality of counterweight blocks (3), wherein bearing seats (4) are provided at both ends of the tail transmission shaft (1), the counterweight synchronous frame (2) is provided on the bearing seat (4), and the counterweight synchronous frame (2) is provided on the counterweight synchronous frame (3).

2. A tensioning device with adjustable internal tensioning force at the tail of a hoist as claimed in claim 1, characterized in that: The counterweight synchronization frame (2) comprises a counterweight fixing seat (21), and support seats (22) are provided at both ends of the counterweight fixing seat (21).

3. A tensioning device with adjustable internal tensioning force at the tail of a hoist as claimed in claim 2, characterized in that: The counterweight fixing seat (21) and the supporting seat (22) are both channel steel structures.

4. A tensioning device with adjustable internal tensioning force at the tail of a hoist as claimed in claim 3, characterized in that: The counterweight fixing seat (21) is provided with a plurality of screw rods (23), and each of the screw rods (23) is provided with a fastening nut (24) matched therewith for pressing and fixing the counterweight block (3) sleeved on the screw rods (23) on the counterweight fixing seat (21).

5. A tensioning device with adjustable internal tensioning force at the tail of a hoist as claimed in claim 4, characterized in that: The counterweight block (3) is provided with a lifting screw hole (5).

6. A tensioning device with adjustable internal tensioning force at the tail of a hoist as claimed in claim 3, characterized in that: A reinforcing connector (25) is provided at the connection between the counterweight fixing seat (21) and the supporting seat (22).

7. A tensioning device with adjustable internal tensioning force at the tail of a hoist as claimed in claim 3, characterized in that: Guide rails (6) fixedly connected to corresponding support seats (22) are provided on both sides of the bearing seat (4).

8. A tensioning device with adjustable internal tensioning force at the tail of a hoist according to any one of claims 1 to 7, characterized in that: The tail transmission shaft (1) is provided with two front and rear counterweight wheels (7).

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