A tool for replacing a carrier roller of a belt conveyor

Abstract

The utility model discloses a kind of tools for replacing carrier roller of belt conveyor, it is related to belt conveyor technical field, including belt conveyor angle steel, the top of the belt conveyor angle steel is symmetrically provided with two chutes, the top of the belt conveyor angle steel is slidably installed with support seat by chute, the top of the support seat is fixedly installed with positive screw rod, the outer thread of the positive screw rod is connected with thread sleeve, the inner thread of the thread sleeve is connected with reverse screw rod, the top of the reverse screw rod is fixedly installed with support piece, the outside of the thread sleeve is provided with two telescopic mechanisms, the top of the thread sleeve is provided with stabilizing mechanism. In the utility model, the cooperation of limiting rod and limiting groove limits reverse screw rod to move only along axial direction, ensures that belt lifting process is stable and accurate;The one-way locking design of ratchet wheel, pawl and coil spring, cooperate with the unlocking structure of first bolt and knob, can effectively prevent the telescopic mechanism from being triggered to cause support piece to drop, and eliminate safety hazards.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyor technology, specifically a tool for replacing idler rollers on a belt conveyor. Background Technology

[0002] A belt conveyor is a core piece of equipment that continuously transports bulk materials (such as ore, coal, and grain) using a circulating conveyor belt in scenarios such as ports, mines, and power plants. The densely arranged idlers beneath the conveyor belt serve as critical support and guiding components, enduring heavy loads, vibration, and dust abrasion over long periods. They are highly susceptible to damage such as bearing seizure, roller wear, and seal failure. Failure to replace them promptly can lead to conveyor belt misalignment, scratches, or even tearing, causing a complete production shutdown. In such cases, specialized idler replacement tools must be used.

[0003] The existing replacement tools require multiple people to lift or rely on large equipment for assistance during operation, resulting in high labor intensity. They are also not easy to lock in one direction, and accidental contact with the drive components during operation can easily cause the belt to fall back unexpectedly, posing significant safety hazards.

[0004] Based on this, a tool for replacing idler rollers on a belt conveyor is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this utility model is to provide a tool for replacing idlers on a belt conveyor, so as to solve the problems in the background technology that are not easy to lock in one direction, and that accidental contact with the drive component during operation can easily cause the belt to fall back unexpectedly, resulting in prominent safety hazards.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tool for replacing idler rollers on a belt conveyor includes a belt conveyor angle steel. Two grooves are symmetrically opened on the top of the belt conveyor angle steel. A support seat is slidably installed on the top of the belt conveyor angle steel through the grooves. A positive screw is fixedly installed on the top of the support seat. A threaded sleeve is connected to the external thread of the positive screw. A negative screw is connected to the internal thread of the threaded sleeve. A support member is fixedly installed on the top of the negative screw.

[0008] The threaded sleeve has two telescopic mechanisms on its exterior and a stabilizing mechanism on its top.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative: the telescopic mechanism includes a telescopic sleeve, which is fixedly installed on the outside of the threaded sleeve, and a telescopic rod is slidably installed inside the telescopic sleeve.

[0011] In one alternative: the stabilizing mechanism includes a protective shell, the top of the threaded sleeve is rotatably mounted with the protective shell, and the protective shell is sleeved on the outside of the anti-screw. A limit groove is formed on the outside of the anti-screw, and a limit rod is provided inside the protective shell, and the limit rod passes through the anti-screw through the limit groove.

[0012] In one alternative: a protective sleeve is fixedly installed on the top of the protective shell, and the protective sleeve is fitted over the outside of the anti-screw.

[0013] In one alternative: a ratchet is fixedly mounted on the outside of the threaded sleeve, a rotating plate is rotatably mounted on one side of the top of the protective shell, the bottom end of the rotating plate penetrates the protective shell and is connected to a connecting rod, and a pawl is provided at the bottom end of the connecting rod, and the pawl is adapted to the ratchet.

[0014] In one alternative: a coil spring is fitted around the outside of the connecting rod, with one end of the coil spring connected to the protective shell and the other end connected to the pawl.

[0015] In one alternative: a knob is provided at the top center of the rotating plate, and a first bolt is threadedly connected to the top of the rotating plate and to one side of the knob.

[0016] In one alternative: the top of the support base is symmetrically threaded with two second bolts.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. In this utility model, the cooperation between the limiting rod and the limiting groove restricts the anti-screw to move only along the axial direction, ensuring the stability and precision of the belt lifting process; the one-way locking design of the ratchet, pawl and coil spring, combined with the unlocking structure of the first bolt and the knob, can effectively prevent accidental activation of the telescopic mechanism, which would cause the support to fall, thus eliminating safety hazards.

[0019] 2. In this utility model, the support seat is flexibly positioned by means of the sliding groove and the second bolt, which can be adapted to different specifications of belt conveyor bodies and has strong versatility; the telescopic mechanism uses the lever principle to increase the lever arm of the rotating threaded sleeve, which greatly reduces the operating force and improves the ease of use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the telescopic mechanism of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the limiting groove of this utility model.

[0023] Figure 4This is a schematic diagram of the stabilizing mechanism of this utility model.

[0024] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0025] Figure reference numerals: 1. Angle steel for conveyor belt; 2. Slide groove; 3. Support base; 4. Positive screw; 5. Threaded sleeve; 6. Negative screw; 7. Support component; 8. Telescopic mechanism; 81. Telescopic sleeve; 82. Telescopic rod; 9. Stabilizing mechanism; 91. Protective shell; 92. Limiting rod; 93. Sheath; 94. Ratchet; 95. Rotating plate; 96. Connecting rod; 97. Pawl; 98. Coil spring; 99. Knob; 910. First bolt; 10. Second bolt; 11. Limiting groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] In one embodiment, such as Figures 1-5 As shown, a tool for replacing idler rollers on a belt conveyor includes a belt conveyor angle steel 1. Two symmetrical grooves 2 are opened on the top of the belt conveyor angle steel 1. A support seat 3 is slidably installed on the top of the belt conveyor angle steel 1 through the grooves 2. A positive screw 4 is fixedly installed on the top of the support seat 3. A threaded sleeve 5 is connected to the external thread of the positive screw 4. A negative screw 6 is connected to the internal thread of the threaded sleeve 5. A support member 7 is fixedly installed on the top of the negative screw 6.

[0028] The threaded sleeve 5 has two telescopic mechanisms 8 on its outside, and a stabilizing mechanism 9 on its top. The support base 3 has two second bolts 10 symmetrically threadedly connected to its top.

[0029] In this embodiment, the support seat 3 is flexibly positioned by the slide groove 2 and the second bolt 10, adapting to different specifications of belt conveyor bodies and having strong versatility; the telescopic mechanism 8 uses the lever principle to increase the lever arm of the rotating threaded sleeve 5, greatly reducing the operating force and improving ease of use; the cooperation between the limit rod 92 and the limit groove 11 restricts the anti-screw 6 to move only along the axial direction, ensuring the stable and accurate lifting process of the belt; the one-way locking design of the ratchet 94, pawl 97 and coil spring 98, combined with the unlocking structure of the first bolt 910 and knob 99, can effectively prevent accidental activation of the telescopic mechanism 8, causing the support 7 to drop, thus eliminating safety hazards.

[0030] In one embodiment, such as Figure 1 and Figure 2As shown, the telescopic mechanism 8 includes a telescopic sleeve 81, which is fixedly installed on the outside of the threaded sleeve 5. A telescopic rod 82 is slidably installed inside the telescopic sleeve 81. The telescopic mechanism 8 can freely adjust its overall length through the sliding cooperation between the telescopic sleeve 81 and the telescopic rod 82. By utilizing the lever principle, the lever arm of rotating the threaded sleeve 5 is significantly increased, greatly reducing the physical exertion of the operator.

[0031] In one embodiment, such as Figures 3-5 As shown, the stabilizing mechanism 9 includes a protective shell 91. The protective shell 91 is rotatably mounted on the top of the threaded sleeve 5 and is fitted over the outside of the reverse screw 6. A limiting groove 11 is formed on the outside of the reverse screw 6. A limiting rod 92 is provided inside the protective shell 91 and passes through the reverse screw 6 through the limiting groove 11. A protective sleeve 93 is fixedly mounted on the top of the protective shell 91 and is fitted over the outside of the reverse screw 6. A ratchet 94 is fixedly mounted on the outside of the threaded sleeve 5. A rotating plate 95 is rotatably mounted on one side of the top of the protective shell 91. The bottom end of the rotating plate 95 passes through the protective shell 91 and is connected to a connecting rod 96. A pawl 97 is provided at the bottom end of the connecting rod 96 and is adapted to the ratchet 94. A coil spring 98 is fitted over the outside of the connecting rod 96, with one end of the coil spring 98 connected to the protective shell 91 and the other end connected to the ratchet 94. The pawl 97 is connected, and a knob 99 is provided at the top center of the rotating plate 95. The top of the rotating plate 95 and one side of the knob 99 are threadedly connected to the first bolt 910. In the stabilizing mechanism 9, the protective shell 91 not only forms a sealed protection for the internal components such as the limiting rod 92 and the pawl 97, isolating them from dust and water vapor corrosion in the coal conveying corridor, but also strictly restricts the rotational freedom of the anti-screw 6 through the sliding cooperation between the limiting rod 92 and the limiting groove 11, so that it can only move up and down along the axial direction, ensuring that the rotational motion of the threaded sleeve 5 is efficiently converted into the linear motion of the anti-screw 6, and avoiding the reduction in lifting efficiency or jamming caused by the rotation of the anti-screw 6. The meshing cooperation between the ratchet 94 and the pawl 97 forms a reliable one-way locking mechanism under the elastic force of the coil spring 98, which can completely prevent the threaded sleeve 5 from reversing due to accidental contact with the telescopic mechanism 8 when replacing the idler roller, and prevent the safety accident of the belt falling due to the accidental descent of the support 7.

[0032] The above embodiment discloses a tool for replacing idler rollers on a belt conveyor. Before operation, the second bolt 10 on the top of the support seat 3 is loosened, allowing the support seat 3 to slide along the groove 2 of the belt conveyor angle steel 1 to the appropriate support position and lock it, ensuring that the bottom of the tool is firmly supported. Then, the length of the telescopic mechanism 8 is adjusted according to the operational requirements: the telescopic rod 82 is pulled out from the telescopic sleeve 81 to a suitable length (using the lever principle to reduce the force of rotating the threaded sleeve 5). The operator holds the protective sleeve 93 to fix the protective shell 91. At this time, the limiting rod 92 inside the protective shell 91 passes through the limiting groove 11 outside the anti-screw 6, restricting the rotational freedom of the anti-screw 6, so that it can only move axially. When rotating the threaded sleeve 5, the positive thread inside the threaded sleeve 5 engages with the positive screw 4, and the negative thread engages with the anti-screw 6, converting the rotational motion into the linear lifting motion of the anti-screw 6. The anti-screw 6 moves upward and drives the support 7 to rise.

[0033] Once the support 7 is in contact with the bottom surface of the belt, the friction between the support 7 and the belt is sufficient to fix the protective shell 91 (no need to hold the protective sleeve 93 anymore). The threaded sleeve 5 continues to rotate through the telescopic mechanism 8, and the anti-screw 6 continues to move upward under the guidance of the limit rod 92 and the limit groove 11 until the belt is lifted to the height required for roller replacement.

[0034] After the belt is lifted, the first bolt 910 of the stabilizing mechanism 9 is loosened. The spring force of the coil spring 98 pushes the pawl 97 to engage with the ratchet 94 outside the threaded sleeve 5. At this time, the threaded sleeve 5 can only rotate in one direction along the direction of lifting the belt (i.e., the direction of the upward movement of the anti-screw 6). Even if the telescopic mechanism 8 is accidentally touched during the replacement of the idler roller, the threaded sleeve 5 cannot rotate in the opposite direction, effectively preventing the belt from falling back due to the descent of the anti-screw 6, and greatly improving the safety of operation.

[0035] After the idler roller is replaced, turn the knob 99 to rotate the rotating plate 95, which in turn pulls the pawl 97 through the connecting rod 96, causing the pawl 97 to separate from the ratchet 94. Then tighten the first bolt 910 to lock the rotating plate 95. At this time, turn the telescopic mechanism 8 in the opposite direction to drive the threaded sleeve 5 to reverse, and the anti-screw 6 descends axially. The support 7 falls back smoothly to the initial position with the belt. After the operation is completed, loosen the second bolt 10 and slide the support seat 3 along the slide groove 2 to retract the tool.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A tool for replacing idler rollers of a belt conveyor, comprising a belt conveyor angle steel (1), wherein two symmetrical grooves (2) are provided on the top of the belt conveyor angle steel (1), a support seat (3) is slidably installed on the top of the belt conveyor angle steel (1) through the grooves (2), a positive screw (4) is fixedly installed on the top of the support seat (3), a threaded sleeve (5) is connected to the external thread of the positive screw (4), a reverse screw (6) is connected to the internal thread of the threaded sleeve (5), and a support member (7) is fixedly installed on the top of the reverse screw (6); Its features are, The threaded sleeve (5) is provided with two telescopic mechanisms (8) on its exterior, and a stabilizing mechanism (9) is provided on the top of the threaded sleeve (5).

2. The tool for changing idler rollers on a belt conveyor according to claim 1, characterized in that, The telescopic mechanism (8) includes a telescopic sleeve (81), which is fixedly installed on the outside of the threaded sleeve (5), and a telescopic rod (82) is slidably installed inside the telescopic sleeve (81).

3. The tool for changing idler rollers on a belt conveyor according to claim 1, characterized in that, The stabilizing mechanism (9) includes a protective shell (91). The protective shell (91) is rotatably mounted on the top of the threaded sleeve (5), and the protective shell (91) is sleeved on the outside of the anti-screw (6). A limiting groove (11) is opened on the outside of the anti-screw (6), and a limiting rod (92) is provided inside the protective shell (91). The limiting rod (92) passes through the anti-screw (6) through the limiting groove (11).

4. A tool for changing idler rollers on a belt conveyor according to claim 3, characterized in that, The top of the protective shell (91) is fixedly fitted with a sleeve (93), and the sleeve (93) is fitted over the outside of the anti-screw (6).

5. A tool for changing idler rollers on a belt conveyor according to claim 3, characterized in that, A ratchet (94) is fixedly installed on the outside of the threaded sleeve (5). A rotating plate (95) is rotatably installed on one side of the top of the protective shell (91). The bottom end of the rotating plate (95) passes through the protective shell (91) and is connected to a connecting rod (96). A pawl (97) is provided at the bottom end of the connecting rod (96), and the pawl (97) is compatible with the ratchet (94).

6. A tool for changing idler rollers on a belt conveyor according to claim 5, characterized in that, The connecting rod (96) is fitted with a coil spring (98), one end of which is connected to the protective shell (91) and the other end is connected to the pawl (97).

7. A tool for changing idler rollers on a belt conveyor according to claim 5, characterized in that, A knob (99) is provided at the top center of the rotating plate (95), and a first bolt (910) is threadedly connected to the top of the rotating plate (95) and to one side of the knob (99).

8. A tool for changing idler rollers on a belt conveyor according to claim 1, characterized in that, The top of the support base (3) is symmetrically threaded with two second bolts (10).

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