Tail tensioning mechanism of belt bucket elevator capable of realizing accurate tensioning

Abstract

The utility model discloses a kind of belt bucket elevator tail tensioning mechanism of realizing accurate tensioning, including driving mechanism, sliding mechanism and drum mounting mechanism, drum mounting mechanism is equipped on the sliding mechanism, the sliding mechanism is driven drum mounting mechanism to move downward under the driving effect of driving mechanism, the driving mechanism includes drive cylinder, pressure transmitter, rotating arm, hydraulic pump, hydraulic oil tank and check valve, the driving end of drive cylinder is hinged with rotating arm front end, the rear end of rotating arm drives sliding mechanism, hydraulic oil tank, hydraulic pump, check valve, pressure transmitter and drive cylinder are sequentially installed on pipeline, compared with prior art, can reduce operator workload, tensioning force precision is good, and tensioning force can be adjusted in real time, facilitate overhauling.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bucket elevator, in particular to a tail tensioning mechanism of belt bucket elevator which can realize accurate tensioning. BACKGROUND

[0002] The tail tensioning device is the main component of the bucket elevator device for tensioning the lifting belt, and generally adopts the screw tensioning form or the heavy hammer tensioning form.

[0003] The main defects of the screw tensioning form are: 1) when the lifting belt is elongated to a certain extent, the screw rod needs to be adjusted to keep the contact between the lifting belt and the lower redirecting wheel, which is very troublesome to adjust frequently; 2) during the adjustment, the tensioning force is uncontrollable: too small tensioning force is likely to cause the belt to slip; too large tensioning force may cause the tail shaft to break due to excessive bending moment and the lifting belt to break due to excessive tensile stress, especially when the lifting machine is feeding and encounters a strong impact force, which may cause the shaft or belt to break, and at the same time, the whole machine has large running resistance and high energy consumption.

[0004] The main defects of the heavy hammer tensioning device are: 1) although the tensioning force is constant, the lifting belt is likely to slip due to insufficient tensioning force when the lifting machine is started instantaneously or the feeding amount suddenly changes greatly; 2) during maintenance, the heavy hammer block needs to be removed, which is inconvenient to operate, time-consuming, low in efficiency and high in cost. SUMMARY

[0005] The purpose of the utility model is to solve the problems in the prior art, and a tail tensioning mechanism of belt bucket elevator which can realize accurate tensioning is proposed, which can solve at least one of the above problems.

[0006] To achieve the above-mentioned purpose, the utility model provides a tail tensioning mechanism of belt bucket elevator which can realize accurate tensioning, comprising a driving mechanism, a sliding mechanism and a drum mounting mechanism, the sliding mechanism is provided with the drum mounting mechanism, the sliding mechanism drives the drum mounting mechanism to move downward under the driving action of the driving mechanism, the driving mechanism comprises a driving cylinder, a pressure transmitter, a rotating arm, a hydraulic pump, a hydraulic oil tank and a check valve, the driving end of the driving cylinder is hingedly connected with the front end of the rotating arm, the rear end of the rotating arm drives the sliding mechanism, the hydraulic oil tank, the hydraulic pump, the check valve, the pressure transmitter and the driving cylinder are sequentially installed on the pipeline.

[0007] As a preferred, the rotating arm is provided with a rotating shaft, and the rotating shaft is arranged on the tail housing through a plurality of bearing seats.

[0008] As a preferred, the distance between the front end of the rotating arm and the rotating shaft is greater than the distance between the rear end of the rotating arm and the rotating shaft.

[0009] The rear end of the rotating arm is provided with a hinged support, and the two ends of the support are provided with supporting rollers.

[0010] The sliding mechanism comprises a sliding shaft and a guide sleeve, the sliding shaft is arranged in the guide sleeve, the guide sleeve is arranged on the tail casing, a sealing sleeve is arranged between the sliding shaft and the maintenance cover, and the upper end of the sliding shaft is provided with a seat body supported on the lower end of the supporting roller.

[0011] The drum mounting mechanism is an installation seat rotationally connected with the roller shaft of the adhesive tape drum.

[0012] The drum mounting mechanism comprises an installation sleeve, a guide shaft, a stop body, a ball guide sleeve, a spring, a ball head seat, a ball head and a bearing, the rear end of the installation sleeve is internally provided with the ball guide sleeve, the ball guide sleeve is internally provided with the guide shaft, the front end of the guide shaft is provided with the stop body, the spring is sleeved on the guide shaft between the stop body and the ball guide sleeve, the outer end of the guide shaft is provided with the ball head seat, the rear end of the ball head seat is internally provided with the ball head, and the outer end of the ball head is internally provided with the bearing for mounting the adhesive tape drum.

[0013] The installation sleeve and the maintenance cover are slidably connected through a roller guide rail.

[0014] The utility model discloses a tail tensioning mechanism of adhesive tape bucket elevator, which can realize accurate tensioning.

[0015] The features and advantages of the utility model will be described in detail in combination with the embodiments and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic diagram of the tail tensioning mechanism of the adhesive tape bucket elevator of the utility model that can realize accurate tensioning.

[0017] Figure 2 It is the side view of the tail tensioning mechanism of the adhesive tape bucket elevator of the utility model that can realize accurate tensioning.

[0018] Figure 3 It is Figure 1 The enlarged view of A in figure 1.

[0019] Figure 4is the part structure diagram of driving mechanism;

[0020] Figure 5 is the structure diagram of drum mounting mechanism;

[0021] Figure 6 is the schematic diagram of the tension force applied to the corresponding end of the belt drum when the belt is adjusted to the right;

[0022] Figure 7 is the schematic diagram of the tension force applied to the corresponding end of the belt drum when the belt is adjusted to the left.

[0023] In the figure: 1-driving mechanism, 2-sliding mechanism, 3-drum mounting mechanism, 4-tail casing, 5-inspection cover, 6-belt drum, 7-roller guide rail, 11-driving cylinder, 12-pressure transmitter, 13-rotating arm, 14-rotating shaft, 15-bearing seat, 16-supporting roller, 17-hydraulic pump, 18-hydraulic oil tank, 19-stand, 110-one-way valve, 21-sliding shaft, 22-guide sleeve, 23-sealing sleeve, 24-seat, 31-mounting sleeve, 32-guide shaft, 33-stop body, 34-roller guide sleeve, 35-spring, 36-ball head seat, 37-ball head, 38-bearing. DETAILED DESCRIPTION

[0024] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , the utility model relates to a tail tensioning mechanism of belt bucket elevator, which can realize accurate tensioning, comprising a driving mechanism 1, a sliding mechanism 2 and a drum mounting mechanism 3, the drum mounting mechanism 3 is arranged on the sliding mechanism 2, the sliding mechanism 2 drives the drum mounting mechanism 3 to move downwards under the driving action of the driving mechanism 1, the driving mechanism 1 comprises a driving cylinder 11, a pressure transmitter 12, a rotating arm 13, a hydraulic pump 17, a hydraulic oil tank 18 and a one-way valve 110, the driving end of the driving cylinder 11 is hingedly connected with the front end of the rotating arm 13, the rear end of the rotating arm 13 drives the sliding mechanism 2, the hydraulic oil tank 18, the hydraulic pump 17, the one-way valve 110, the pressure transmitter 12 and the driving cylinder 11 are sequentially installed on a pipeline.

[0025] The rotating arm 13 is provided with a rotating shaft 14, and the rotating shaft 14 is arranged on the tail casing 4 through a plurality of bearing seats 15.

[0026] The distance between the front end of the rotating arm 13 and the rotating shaft 14 is greater than the distance between the rear end of the rotating arm 13 and the rotating shaft 14.

[0027] The rear end of the rotating arm 13 is provided with a hinged support 19, and both ends of the support 19 are provided with supporting rollers 16.

[0028] The sliding mechanism 2 comprises a sliding shaft 21 and a guide sleeve 22, the sliding shaft 21 is arranged in the guide sleeve 22, the guide sleeve 22 is arranged on the tail casing 4, a sealing sleeve 23 is arranged between the sliding shaft 21 and the maintenance cover 5, and the upper end of the sliding shaft 21 is provided with a seat body 24 supported on the lower end of the supporting roller 16.

[0029] The drum mounting mechanism 3 is a mounting seat in rotational connection with the rotating shaft of the rubber belt drum 6.

[0030] The drum mounting mechanism 3 comprises a mounting sleeve 31, a guide shaft 32, a blocking body 33, a ball guide sleeve 34, a spring 35, a ball head seat 36, a ball head 37 and a bearing 38, the ball guide sleeve 34 is arranged in the rear end of the mounting sleeve 31, the guide shaft 32 is arranged in the ball guide sleeve 34, the front end of the guide shaft 32 is provided with the blocking body 33, the spring 35 is arranged on the guide shaft 32 between the blocking body 33 and the ball guide sleeve 34, the outer end of the guide shaft 32 is provided with the ball head seat 36, the rear end of the ball head seat 36 is provided with the ball head 37, and the outer end of the ball head 37 is provided with the bearing 38 for mounting the rubber belt drum 6.

[0031] The mounting sleeve 31 and the maintenance cover 5 are connected through the roller guide rail 7.

[0032] The working process of the utility model:

[0033] In the working process of the utility model, the hydraulic oil in the hydraulic oil tank 18 is acted on by the hydraulic pump 17, sequentially passes through the one-way valve 110 and the pressure transmitter 12, and finally enters the driving cylinder 11, the driving cylinder 11 drives the rotating arm 13 to rotate clockwise, the rotating arm 13 drives the sliding shaft 21 to move downward through the cooperation of the support 19, the supporting roller 16 and the seat body 24, the sliding shaft 21 drives the drum mounting mechanism 3 to move downward, and the drum mounting mechanism 3 drives the rubber belt drum to move downward to tension the rubber belt.

[0034] The rear end of the rotating arm 13 is provided with the hinged support 19, both ends of the support 19 are provided with the supporting rollers 16, and the upper end of the sliding shaft 21 is provided with the seat body 24 supported on the lower end of the supporting roller 16, so that the force borne by the sliding shaft 21 is always vertically downward, the abrasion of the sliding shaft 21 is reduced, the transmission is flexible, and the drawbacks caused by the direct downward pressure of the rear end of the rotating rotating arm 13 on the sliding shaft 21 are avoided.

[0035] The design of the drum mounting mechanism 3 meets the requirements of the movable connection for separately increasing the tension adjustment of the corresponding end of the belt drum 6, so that when the belt deviates, the belt can be reset and adjusted by separately increasing the tension of the corresponding end of the belt drum, so that it returns to the middle position of the belt drum.

[0036] The above examples are illustrative of the present application and are not limiting of the present application. Any simple modifications of the present application are intended to fall within the scope of the present application.

Claims

1. A tail tensioning mechanism of a belt bucket elevator capable of achieving accurate tensioning, characterized in that: Including drive mechanism (1), sliding mechanism (2) and drum mounting mechanism (3), the sliding mechanism (2) is equipped with drum mounting mechanism (3), the sliding mechanism (2) is driven by drive mechanism (1) under the action of drive mechanism (1) and drives drum mounting mechanism (3) to move downward, the drive mechanism (1) includes drive cylinder (11), pressure transmitter (12), rotating arm (13), hydraulic pump (17), hydraulic oil tank (18) and check valve (110), the drive end of drive cylinder (11) is hinged with the front end of rotating arm (13), the rear end of rotating arm (13) drives sliding mechanism (2), hydraulic oil tank (18), hydraulic pump (17), check valve (110), pressure transmitter (12) and drive cylinder (11) are sequentially installed on the pipeline.

2. The tail tensioning mechanism of the belt bucket elevator capable of achieving precise tensioning according to claim 1, characterized in that: The rotating arm (13) is provided with a rotating shaft (14), and the rotating shaft (14) is arranged on the tail casing (4) through a plurality of bearing seats (15).

3. The tail tensioning mechanism of the belt bucket elevator capable of achieving precise tensioning according to claim 1, characterized in that: The distance between the front end of the rotating arm (13) and the rotating shaft (14) is greater than the distance between the rear end of the rotating arm (13) and the rotating shaft (14).

4. The tail tensioning mechanism of the belt bucket elevator capable of achieving precise tensioning according to claim 1, characterized in that: The rear end of the rotating arm (13) is provided with a hinged support (19), and the both ends of the support (19) are provided with supporting rollers (16).

5. A tail tensioning mechanism for a belt bucket elevator capable of achieving accurate tensioning as claimed in claim 4, characterized in that: The sliding mechanism (2) includes a sliding shaft (21) and a guide sleeve (22), the sliding shaft (21) is arranged in the guide sleeve (22), the guide sleeve (22) is arranged on the tail casing (4), the sealing sleeve (23) is arranged between the sliding shaft (21) and the maintenance cover (5), and the upper end of the sliding shaft (21) is provided with a seat body (24) supported on the lower end of the supporting roller (16).

6. A tail tensioning mechanism for a belt bucket elevator capable of achieving accurate tensioning as claimed in claim 5, characterized in that: The drum mounting mechanism (3) is a mounting seat rotatably connected with the roller shaft of the adhesive tape drum (6).

7. A tail tensioning mechanism for a belt bucket elevator capable of achieving accurate tensioning as claimed in claim 6, characterized in that: The mounting seat includes a mounting sleeve (31), a guide shaft (32), a blocking body (33), a ball guide sleeve (34), a spring (35), a ball head seat (36), a ball head (37) and a bearing (38), the rear end of the mounting sleeve (31) is provided with the ball guide sleeve (34), the ball guide sleeve (34) is provided with the guide shaft (32), the front end of the guide shaft (32) is provided with the blocking body (33), the spring (35) is sleeved on the guide shaft (32) between the blocking body (33) and the ball guide sleeve (34), the outer end of the guide shaft (32) is provided with the ball head seat (36), the rear end of the ball head seat (36) is provided with the ball head (37), and the outer end of the ball head (37) is provided with the bearing (38) for mounting the adhesive tape drum (6).

8. A tail tensioning mechanism for a belt bucket elevator capable of achieving accurate tensioning as claimed in claim 7, characterized in that: The mounting sleeve (31) and the maintenance cover (5) are connected by the roller guide rail (7).

Images