Chain stopper strength testing mechanism

Abstract

The utility model provides a chain stopper strength testing mechanism, which comprises a section of chain and a chain stopper for clamping the chain, and further comprises a tension testing machine, the tension testing machine comprises a machine body, a fixed clamping end fixedly arranged on the machine body, and a sliding clamping end which is driven by a linear driving mechanism so as to be arranged on the machine body in a sliding manner; the fixed clamping end and the sliding clamping end are arranged in a face-to-face mode. A simulation mounting plate is arranged below the chain stopper, and the chain stopper is arranged on the simulation mounting plate according to the mounting state during working; when the chain stopper works, the front end of the chain is arranged on a chain stretching seat in the tension direction of the chain stopper, and the chain stretching seat is detachably connected with the sliding clamping end. The end, away from the sliding clamping end, of the simulation mounting plate is horizontally arranged on a mounting plate stretching seat, and the mounting plate stretching seat is detachably connected with the fixed clamping end.

Description

TECHNICAL FIELD

[0001] The utility model belongs to scraper conveyor chain stopper field, concretely relates to a kind of chain stopper strength test mechanism. BACKGROUND

[0002] Chain stopper is used to block the scraper chain on the conveyor during chain tightening. Place the chain stopper into the hole of the middle plate in the groove, block the scraper chain vertical ring, block the flat ring, tighten the chain when the chain stopper clamps the middle plate, prevent the chain stopper from being overturned, cause accidents, and remove the chain stopper after the chain tensioning work is completed. Figure 1 As shown in the chain tightening process schematic diagram. Wherein A is the head sprocket, B is the chain tightener, C is the chain stopper, and D is the tail sprocket. When the chain is loose. Fix the chain stopper on the groove to block the chain, rotate the head sprocket clockwise to rotate the excess chain between the chain tightener and the chain stopper, and fix the hydraulic chain tightener after the chain tension is appropriate.

[0003] If the chain stopper is not installed correctly or cannot fix the scraper chain correctly during use, it may cause the chain to slip or jump out during chain tightening, causing equipment damage or personal injury. The structure of the chain stopper currently mainly has the following two forms: three round holes and two square holes. The chain stopper frame is a welded part of plate splicing, and the welding defects are hidden in the invisible place, and the welding quality cannot be visually inspected. The chain stopper itself may also have quality problems or severe wear, which may cause the scraper chain to be unable to be effectively fixed during chain tightening, thereby causing danger. There is no equipment to detect the connection strength of the chain stopper installed on the middle plate, and accidents cannot be ruled out in advance. SUMMARY

[0004] The utility model provides a kind of chain stopper strength test mechanism.

[0005] The utility model aims to realize in the following mode: a kind of chain stopper strength test mechanism, including a section of chain and the chain stopper of blocking chain, further including tensile testing machine, the tensile testing machine includes body, fixedly arranged on the fixed clamping end of body, the sliding clamping end that is driven by linear drive mechanism to slide on body;The fixed clamping end and the sliding clamping end face to face arrangement;The lower portion of the chain stopper is provided with simulation installation plate, and the chain stopper is arranged on the simulation installation plate according to the installation state during work;The chain stopper during work: the chain is arranged on chain stretching seat in the direction of being pulled along the chain stopper, one end located in front, and the chain stretching seat is detachably connected with the sliding clamping end;The end of the simulation installation plate away from the sliding clamping end is horizontally arranged on installation plate stretching seat, and the installation plate stretching seat is detachably connected with the fixed clamping end.

[0006] The chain stretching seat is provided with an opening direction facing the U-shaped groove of the chain near the head of the chain, the chain is provided in the U-shaped groove, and the fixing shaft penetrates through the two side walls of the U-shaped groove and the chain ring, each chain corresponds to one fixing shaft, and the chain stretching seat is provided with a clamping handle away from the tail of the chain.

[0007] The mounting plate stretching seat is provided with an opening direction facing the U-shaped groove of the chain near the head of the chain, the U-shaped groove penetrates through in the left-right direction, the simulation mounting plate is horizontally arranged in the U-shaped groove, the distance between the two side walls of the U-shaped groove corresponds to the thickness of the simulation mounting plate, at least two fixing shafts penetrate through the two side walls of the U-shaped groove and the simulation mounting plate along the left-right direction of the simulation mounting plate, and the mounting plate stretching seat is provided with a clamping handle away from the tail of the chain.

[0008] The fixing shaft is a pin shaft, the head of the pin shaft is provided with a positioning cap, the tail of the pin shaft is provided with a positioning hole, and the D-shaped cotter pin penetrates through the positioning hole.

[0009] The chain blocking device is a two-hole type, the simulation mounting plate is a flat plate, at least two stretching seat fixing holes matched with the fixing shafts and two chain blocking device clamping holes matched with the two clamping claws of the chain blocking device are arranged on the flat plate, and one chain is fixedly arranged in the U-shaped groove of the chain stretching seat through the fixing shafts.

[0010] The chain blocking device is a three-hole type, the simulation mounting plate comprises a flat plate, clamping grooves matched with the left and right ends of the chain blocking device are arranged on the left and right sides of the flat plate respectively, at least two stretching seat fixing holes matched with the fixing shafts and three triangularly distributed chain blocking device clamping holes matched with the chain blocking device are arranged on the flat plate of the simulation mounting plate, and two chains are fixedly arranged in the U-shaped grooves of the chain stretching seats through the two fixing shafts.

[0011] Compared with the prior art, the installation state of the chain blocking device, the chain and the simulation mounting plate on which the chain blocking device is mounted is simulated, the strength of the chain blocking device and the working strength and installation reliability of the chain blocking device in the installation state are accurately detected, and faults in the actual process are prevented. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the working principle diagram of the chain blocking device.

[0013] Figure 2 is the schematic diagram of the embodiment one of the utility model.

[0014] Figure 3 is Figure 2 the front view.

[0015] Figure 4 isFigure 2 The diagram of the tensile testing machine is omitted.

[0016] Figure 5 yes Figure 4 Schematic diagram of the simulated mounting plate.

[0017] Figure 6 This is a schematic diagram of Embodiment 2 of the present invention (the tensile testing machine is omitted).

[0018] Figure 7 yes Figure 6 Schematic diagram of the simulated mounting plate.

[0019] Among them, 1 is the chain, 2 is the chain stopper, 3 is the tensile testing machine, 30 is the fixed clamping end, 31 is the sliding clamping end, 32 is the linear drive mechanism, 4 is the chain tension seat, 5 is the mounting plate tension seat, 6 is the fixed shaft, 7 is the simulated mounting plate, 70 is the tension seat fixing hole, and 71 is the chain stopper mounting hole. Detailed Implementation

[0020] In this utility model, unless otherwise expressly specified and limited, the technical terms used in this application shall have the ordinary meaning understood by those skilled in the art. Terms such as "connected," "linked," "fixed," and "set" shall be interpreted broadly, referring to fixed connections, detachable connections, or integral connections; direct connections or indirect connections via an intermediate medium; mechanical connections or electrical connections. Unless otherwise expressly specified and limited, "above" or "below" a second feature may mean that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," or "over" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "under" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Relational terms such as "first," "second," etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms used in the description, such as “center,” “lateral,” “longitudinal,” “length,” “width,” “thickness,” “height,” “front,” “rear,” “left,” “right,” “up,” “down,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “axial,” “radial,” “circumferential,” “clockwise,” and “counterclockwise,” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0021] The technical scheme of the utility model will be described clearly and completely in combination with the drawings and specific embodiments. Figures 1-7 As shown in the figure, a chain blocker strength test mechanism, including a section of chain 1 and chain blocker 2 that clamps chain 1, also including tensile testing machine 3, the tensile testing machine 3 includes a machine body, fixedly arranged on the machine body are fixed clamping end 30 and sliding clamping end 31 that is driven by linear driving mechanism 32 and is slidably arranged on the machine body; The fixed clamping end 30 and the sliding clamping end 31 are arranged face to face; The lower part of the chain blocker 2 is provided with an analog mounting plate 7, and the chain blocker 2 is arranged on the analog mounting plate 7 according to the installation state during work; When the chain blocker 2 works: the chain 1 is arranged on the chain stretching seat 4 along the direction of the chain blocker 2, and the chain stretching seat 4 is detachably connected with the sliding clamping end 31; The end of the analog mounting plate away from the sliding clamping end 31 is horizontally arranged on the mounting plate stretching seat 5, and the mounting plate stretching seat 5 is detachably connected with the fixed clamping end 30. In practice, the commonly used chain blocker 2 can only bear unidirectional pressure, and will be pulled out of the installation hole if bearing reverse tension. That is, when the chain blocker 2 clamps the chain 1, the direction of the tension borne by the chain 1 and the chain blocker 2 is the same, that is, unidirectional. When testing: the tensile testing machine 3 needs to connect and provide tension to the chain 1 along the direction of the tension, and the chain 1 is located at the front end, so as to simulate the pulled state of the chain blocker 2 and the chain 1. The end of the analog mounting plate away from the sliding clamping end 31 is connected with the fixed clamping end 30, and the stress state of the plate material of the chain blocker 2 is simulated. The connection mode of the chain 1 and the chain blocker 2 is the prior art. Generally, the chain 1 includes staggered vertical rings and flat rings, the vertical ring of the chain 1 passes through the middle hole of the chain blocker 2, and the width of the flat ring of the chain 1 is greater than the width of the middle hole of the chain blocker 2, so that the flat ring is clamped at one end of the chain blocker 2 and plays a chain blocking role. The material of the analog mounting plate 7 can be selected from the same material as the plate material used for installing the chain blocker 2 during work. The tensile testing machine 3 can adopt the existing tensile testing machine 3, and the clamping mechanism of the fixed clamping end 30 and the sliding clamping end 31 can adopt the existing technology, such as the structure in the patent CN207472660U tensile testing machine, which will not be described in detail. Other components of the tensile testing machine 3, such as the tension sensor, the controller, etc. also belong to the prior art, which will not be described in detail. The utility model can accurately detect the strength of the chain blocker 2 and the working strength and installation reliability of the chain blocker 2 in the installation state by simulating the tooling state of the chain blocker 2 through the installation state of the chain blocker 2, the chain 1 and the analog mounting plate 7 for installing the chain blocker 2, and preventing faults in the actual process.

[0022] The chain stretching seat 4 is provided with an opening direction facing the U-shaped groove of the chain 1 near the head of the chain 1, the chain 1 comprises chain links nested two by two; the chain links are arranged in the U-shaped groove, and the fixed shaft 6 penetrates through the two side walls of the U-shaped groove and the chain links; each chain 1 corresponds to one fixed shaft 6. The clamping handle is provided at the tail of the chain 1 away from the chain stretching seat 4. The clamping handle is preferably in the shape of a cylinder and is arranged in the clamping mechanism of the sliding clamping end 31. The fixed shaft 6 here can be a pin shaft or a threaded shaft provided with threads on the outer surface, etc., as long as it can fix the positions of the U-shaped groove and the chain links. The distance between the two side walls of the U-shaped groove preferably corresponds to the thickness of the flat ring of the chain link. The U-shaped groove can have two forms. In the first form, the two side walls of the U-shaped groove are arranged opposite to each other in the up-down direction, the flat ring of the chain link is arranged between the two side walls, and is fixed by a pin shaft, such as the structure in the drawing. In the second form, the two side walls of the U-shaped groove are arranged opposite to each other in the left-right direction, the vertical ring of the chain link is arranged between the two side walls, and is fixed by a pin shaft.

[0023] The mounting plate stretching seat 5 is provided with an opening direction facing the U-shaped groove of the chain 1 near the head of the chain 1, the U-shaped groove penetrates through in the left-right direction, the simulation mounting plate 7 is arranged horizontally in the U-shaped groove, the distance between the two side walls of the U-shaped groove corresponds to the thickness of the simulation mounting plate 7; at least two fixed shafts 6 are arranged in the left-right direction of the simulation mounting plate 7 and penetrate through the two side walls of the U-shaped groove and the simulation mounting plate 7; the clamping handle is provided at the tail of the chain 1 away from the mounting plate stretching seat 5. The two side walls of the U-shaped groove in the mounting plate stretching seat are arranged opposite to each other in the up-down direction. Here, the horizontal arrangement is a general horizontal arrangement, which allows a certain angular error. Preferably, at least two fixed shafts 6 are arranged in the left-right direction of the simulation mounting plate 7 and penetrate through the two side walls of the U-shaped groove and the simulation mounting plate 7; the simulation mounting plate 7 is fixed by the at least two fixed shafts 6 in the left-right direction, which can make the position of the simulation mounting plate 7 more stable during work.

[0024] The fixed shaft 6 is a pin shaft, the head of the pin shaft is provided with a positioning cap, and the tail of the pin shaft is provided with a positioning hole through which the D-shaped snap pin penetrates. The head of the positioning cap is larger than the head of the pin shaft. Limiting the pin shaft by the D-shaped snap pin is prior art and will not be described in detail. Other methods of limiting the movement of the pin shaft can also be used.

[0025] The chain stopper 2 is a two-hole type; the analog mounting plate 7 is a flat plate, on which at least two tension seat fixing holes 70 cooperating with the fixing shaft 6 and two chain stopper clamping holes 71 cooperating with the two clamping jaws of the chain stopper 2 are arranged and fixed. A chain 1 is fixedly arranged in the U-shaped groove of the chain tension seat 4 through the fixing shaft 6. This chain stopper 2 includes a back plate and vertical plates arranged on both sides of the back plate, and the lower end of the vertical plate away from the back plate is provided with a clamping jaw. The chain stopper 2 prevents the flat ring of the chain 1 from being stopped in the three-dimensional space composed of the vertical plate and the back plate, the back plate hole contains the vertical ring of the chain 1, and the chain tension seat 4 fixes the chain 1 in the chain tension seat 4 with a pin shaft. The shape of the chain stopper clamping hole 71 can be a square hole and a through hole on the front side. The chain stopper clamping hole 71 cooperates with the clamping jaw to make the clamping jaw clamped therein and not to be pulled out under the action of unidirectional tension. The chain stopper 2, the mounting method and the corresponding chain stopper clamping hole 71 are prior art and will not be described in detail.

[0026] The chain stopper 2 is a three-hole type; the analog mounting plate 7 includes a flat plate, and the left and right sides of the flat plate are respectively provided with clamping grooves cooperating with the left and right ends of the chain stopper 2; and the flat plate of the analog mounting plate 7 is provided with at least two tension seat fixing holes 70 cooperating with the fixing shaft 6 and three triangularly distributed chain stopper clamping holes 71 cooperating with the chain stopper 2. Two chains 1 are respectively fixed in the U-shaped grooves of the chain tension seats 4 through two fixing shafts 6. The chain stopper clamping hole 71 here is a round hole, and the size corresponds to the chain stopper 2. The two ends of the chain stopper 2 are arranged in the clamping grooves of the middle plate, and the bottom has the middle plate fixed by three shafts. The structure of the chain stopper 2 and the mounting method belong to the prior art and will not be described in detail.

[0027] In addition, the left and right sides of the machine body corresponding to the sliding clamping end 31 are respectively provided with guide rails, and the left and right ends of the sliding clamping end 31 are respectively slidably arranged on the corresponding guide rails; the front side of the sliding clamping end 31 is provided with a clamping mechanism for clamping the chain 1, and the rear side of the sliding clamping end 31 and the machine body are provided with the linear driving mechanism 32; and the linear driving mechanism 32 is an oil cylinder. In the working process, the analog mounting plate 7 can be suspended above the machine body and fixed by the fixed clamping end 30 and the mounting plate tension seat 5. A support plate or a support rail can also be arranged on the machine body corresponding to the lower side of the analog mounting plate 7, and the lower surface of the analog mounting plate 7 is arranged on the support rail.

[0028] In the embodiment, the chain 1 is threaded through the chain stopper 2, and the chain stopper 2 is installed on the simulation mounting plate 7. The simulation mounting plate 7 and the chain stopper 2 thereon are placed on the tensile testing machine 3. One side of the simulation mounting plate 7 and the chain 1 are respectively fixed on the corresponding side of the mounting plate stretching seat 5 and the chain stretching seat 4 through a pin shaft. The fixed clamping end 30 of the tensile testing machine 3 clamps the clamping handle of the mounting plate stretching seat 5, and the sliding clamping end 31 clamps the chain stretching seat 4. The oil cylinder drives the sliding clamping end 31 to move to apply pressure to the chain 1 and the chain stopper 2, and test the installation state, strength, fatigue resistance and other indexes under a predetermined tensile force. The chain stopper 2 can not only test the structural strength of the chain stopper 2 itself, but also test the structural strength of the chain stopper 2 itself, so that the chain tightening process is more secure.

[0029] The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. It should be considered that the combination is within the scope of the present application. Without departing from the overall concept of the present application, the technical solution of the present application can be replaced or changed, and several changes and improvements should be considered as the protection scope of the present application.

Claims

1. A chain stopper strength testing mechanism comprising a length of chain and a chain stopper to catch the chain, characterised in that: The tensile testing machine comprises a machine body, a fixed clamping end fixedly arranged on the machine body, and a sliding clamping end slidingly arranged on the machine body and driven by a linear driving mechanism; the fixed clamping end and the sliding clamping end are arranged face to face; a simulation mounting plate is arranged below the chain blocking device, and the chain blocking device is arranged on the simulation mounting plate according to the mounting state during operation; during operation of the chain blocking device: one end of the chain in the front direction along the tension direction of the chain blocking device is arranged on a chain stretching seat, and the chain stretching seat is detachably connected to the sliding clamping end; one end of the simulation mounting plate away from the sliding clamping end is horizontally arranged on a mounting plate stretching seat, and the mounting plate stretching seat is detachably connected to the fixed clamping end.

2. The chain strength testing mechanism of claim 1, wherein: The chain stretching seat is provided with a U-shaped groove with an opening direction towards the chain, and the chain comprises chain links nested two by two; the chain links are arranged in the U-shaped groove, and a fixed shaft penetrates through the two side walls of the U-shaped groove and the chain links; each chain corresponds to one fixed shaft; the chain stretching seat is provided with a clamping handle away from the tail of the chain.

3. The chain strength testing mechanism of claim 2, wherein: The mounting plate stretching seat is provided with a U-shaped groove with an opening direction towards the chain, and the U-shaped groove penetrates through in the left-right direction; the simulation mounting plate is horizontally arranged in the U-shaped groove, and the distance between the two side walls of the U-shaped groove corresponds to the thickness of the simulation mounting plate; at least two fixed shafts penetrate through the two side walls of the U-shaped groove and the simulation mounting plate along the left-right direction of the simulation mounting plate; the mounting plate stretching seat is provided with a clamping handle away from the tail of the chain.

4. The chain strength testing mechanism of claim 3, wherein: The fixed shaft is a pin shaft, the head of the pin shaft is provided with a positioning cap, the tail of the pin shaft is provided with a positioning hole, and a D-shaped cotter pin penetrates through the positioning hole.

5. The chain strength testing mechanism of claim 3, wherein: The chain blocking device is a two-hole type; the simulation mounting plate is a flat plate, and at least two stretching seat fixing holes matched with the fixed shaft and two chain blocking device clamping holes matched with the two clamping claws of the chain blocking device are arranged on the flat plate; one chain is fixedly arranged in the U-shaped groove of the chain stretching seat through the fixed shaft.

6. The chain strength testing mechanism of claim 3, wherein: The chain blocking device is a three-hole type; the simulation mounting plate comprises a flat plate, and a clamping groove matched with the left and right ends of the chain blocking device is arranged on the left and right sides of the flat plate; at least two stretching seat fixing holes matched with the fixed shaft and three triangularly distributed chain blocking device clamping holes matched with the chain blocking device are arranged on the flat plate of the simulation mounting plate; two chains are fixed by two fixed shafts through the chain stretching seat.

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