Via hole guide tool

Abstract

The utility model discloses a via hole guide tool which is arranged in an observation hole of a boiler and used for guiding part of a rope-shaped object entering the observation hole. The through hole guide tool comprises a guide cylinder, at least one guide roller set and a second supporting plate, the guide roller set is arranged at the end of the guide cylinder, the guide roller set comprises two first guide rollers and two second guide rollers, the two first guide rollers and the two second guide rollers jointly define a wire through hole, the guide cylinder comprises a plurality of side walls connected with the second guide rollers, and the second supporting plate is arranged on the side walls. The side wall is provided with an avoiding notch which is formed between the two first guide rollers and provided with an outward opening, and at least part of the structure of the second guide roller is exposed out of the avoiding notch. In the hoisting process, when the hoisting rope deviates towards one side, especially deviates at a large angle, due to the fact that the avoiding notch is formed in the side plate, the hoisting rope can penetrate through the avoiding notch and make contact with the second guide roller, the hoisting rope is prevented from making contact with a non-guide roller structure in the guide tool, and the hoisting rope is prevented from being damaged. Therefore, the hoisting rope is prevented from being abraded when penetrating through the observation hole.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler equipment, in particular to a through-hole guide tool. Background Art

[0002] As a device that can achieve energy conversion, boilers use high heat and high-pressure steam to decompose or melt the substances placed inside them, and are widely used in industrial production.

[0003] In the prior art, a lifting rope is usually used to transport materials to the inside of the boiler to achieve internal loading of the boiler. However, there is a problem of severe wear when the lifting rope passes through the observation hole of the boiler. Utility Model Content

[0004] The main purpose of the utility model is to provide a through-hole guide tool to reduce the wear of the hoisting rope during the hoisting process.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a through-hole guide tool, which is arranged in the observation hole of the boiler and is used to provide guidance for the rope-like object that partially enters the observation hole. The through-hole guide tool comprises:

[0006] A guide cylinder, comprising a plurality of side plates, and a base and a first support plate arranged in parallel, wherein the base and the first support plate are arranged along a first direction, and in the first direction, two ends of the side plates are respectively connected to the base and the first support plate, and the base, the first support plate and the plurality of side plates enclose the guide cylinder;

[0007] At least one guide roller group is arranged at the end of the guide cylinder, each of the guide roller groups includes two first guide rollers parallel to each other, and two second guide rollers parallel to each other, the first guide roller is rotatably connected to the two opposite side plates, and the two first guide rollers are arranged along the first direction, the second guide roller is rotatably connected to the base and the first support plate, and the two first guide rollers and the two second guide rollers are combined to form a wire hole; wherein the side plate has an avoidance gap, the avoidance gap is arranged between the two first guide rollers and the opening faces the outside of the guide cylinder, and in the opening direction of the avoidance gap, the two second guide rollers and the two first guide rollers are arranged in sequence, and the avoidance gap exposes at least part of the side wall of the second guide roller;

[0008] The second support plate is connected to the outer wall of the guide cylinder through a telescopic structure, and the surfaces of the base and the second support plate facing away from each other have arc surfaces.

[0009] In some embodiments, the avoidance gap includes two opposite gap side walls and a gap bottom wall connecting the two gap side walls, and the two gap side walls and the gap bottom wall are U-shaped;

[0010] In the first direction, at least a portion of the structure of the first guide roller protrudes from the side wall of the notch;

[0011] In the extending direction of the guide cylinder, at least a part of the structure of the second guide roller protrudes from the bottom wall of the notch.

[0012] In some embodiments, in the first direction, two ends of the side plate are respectively connected to the side edge of the base and the side edge of the first support plate;

[0013] The surface of the side plate located on the inner ring of the guide cylinder has a step structure, and the step structure abuts against the top surface of the base and / or the bottom surface of the first support plate.

[0014] In some embodiments, in the axial direction of the first guide roller, the outer diameter of the first guide roller is equal everywhere, and in the axial direction of the second guide roller, the outer diameter of the second guide roller is equal everywhere;

[0015] In one of the guide roller groups, two of the first guide rollers and two of the second guide rollers enclose a wire hole with a rectangular outline.

[0016] In some embodiments, in the axial direction of the first guide roller, a first annular groove is provided in the middle area of ​​the first guide roller, and in the axial direction of the second guide roller, a second annular groove is provided in the middle area of ​​the second guide roller;

[0017] In one of the guide roller groups, two of the first guide rollers and two of the second guide rollers enclose a wire hole with a circular contour.

[0018] In some embodiments, the plurality of side plates form two side plate groups, and in the extension direction of the guide cylinder, the two side plate groups are disposed at both ends of the guide cylinder;

[0019] Wherein, each of the side panel groups includes two opposite side panels.

[0020] In some embodiments, the telescopic structure includes a first adjusting nut and a first screw, the first screw is connected to the first support plate, the first adjusting nut is rotatably connected to the second support plate, and the first screw is threadedly matched with the first adjusting nut;

[0021] The telescopic structure also includes a first linear bearing and a first guide rod, the first linear bearing is slidably connected to the first guide rod, one of the first linear bearing and the first guide rod is directly connected to the first support plate, and the other is directly connected to the second support plate.

[0022] In some embodiments, the guide cylinder further includes at least one support column, both ends of which are respectively connected to the top surface of the base and the bottom surface of the first support plate, and the support column provides support for the first support plate in the first direction.

[0023] In some embodiments, in the extension direction of the guide cylinder, at least one end of the second support plate is provided with a clamping plate, the clamping plate is arranged at an angle with the second support plate, and the free end of the clamping plate extends out of the hole wall of the observation hole in a direction away from the guide cylinder.

[0024] In some embodiments, a first recessed area is provided on a surface of the second support plate that is away from the base, and a first elastic member is filled in the first recessed area; and / or,

[0025] A second recessed area is provided on a surface of the base which is away from the second support plate, and a second elastic member is filled in the second recessed area.

[0026] The beneficial effects of the utility model are:

[0027] In the through-hole guide tooling provided by the utility model, during the lifting process, when the lifting rope deviates to one side, especially when it deviates at a large angle, since the side plate has an avoidance gap, the lifting rope can pass through the avoidance gap and contact with the second guide roller, thereby avoiding the lifting rope from contacting the non-guide roller structure in the guide tooling, thereby avoiding the lifting rope from being worn when passing through the observation hole, increasing the service life of the lifting rope, and eliminating the safety hazard of the lifting rope breaking due to wear from the observation hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 is a schematic diagram of internal hoisting of a boiler according to an exemplary embodiment;

[0030] Figure 2 is a schematic diagram of installing a via guide tool according to an exemplary embodiment;

[0031] Figure 3 is a schematic structural diagram of a via guide tool according to an exemplary embodiment;

[0032] Figure 4 for Figure 3 A magnified image of area A;

[0033] Figure 5 is a front view of a via guide tool in an extension direction according to an exemplary embodiment;

[0034] Figure 6 1 is a front view of a via guide tool in an extension direction according to another exemplary embodiment.

[0035] In the figure: 10-through-hole guide tooling; 1-guide cylinder; 110-side plate group; 11-side plate; 111-avoidance gap; 112-gap bottom wall; 113-gap side wall; 115-step surface; 116-raised portion; 12-base; 13-first support plate; 14-support column; 2-guide roller group; 21-first guide roller; 211-first annular groove; 22-second guide roller; 221-second annular groove; 3-through-line hole; 4-second support plate; 41-first recessed area; 42-clamp plate; 5-telescopic structure; 51-first adjusting nut; 52-first screw; 53-first linear bearing; 54-first guide rod; 6-observation hole; 7-hoisting rope; 8-hoisting object. DETAILED DESCRIPTION

[0036] When hoisting inside the boiler, the hoisting rope passes through the observation hole of the boiler and enters the boiler to transport the hoisted object. The hoisted object exerts a reaction force on the hoisting rope, causing the hoisting rope to rest against the angle between the hole wall and the end face below the exit of the observation hole, and produces friction with the observation hole at the angle as the hoisted object moves. At the same time, at the other end of the observation hole, the hoisting rope often also rubs against the angle at the entrance of the observation hole. In industrial production, hoisted objects are often quite heavy, and the hole wall and cross-section of the observation hole are relatively rough. The angle between the two is a non-smooth transition, which will cause serious wear on the hoisting rope after a period of time, reducing the maximum force range of the hoisting rope, posing a safety hazard.

[0037] Therefore, a guide fixture is provided to provide guidance for the hoisting rope to reduce the wear of the hoisting rope. In the existing guide fixture, a number of guide rollers are usually provided to enclose together to form a wire hole for the hoisting rope to pass through, so as to avoid direct contact between the hoisting rope and the observation hole. However, during the hoisting process, the hoisting object often shakes, causing the hoisting rope to deviate to one side on the guide roller and contact with other structures in the guide fixture, causing wear.

[0038] In order to solve the problems existing in the related art, the present application provides a through-hole guide fixture, which is arranged in the observation hole of the boiler and is used to provide guidance for the rope-like object that partially enters the observation hole. The through-hole guide fixture includes a guide cylinder, at least one guide roller group and a second support plate, wherein the guide roller group is arranged at the end of the guide cylinder, the guide roller group includes two first guide rollers and two second guide rollers, which together enclose the through-line hole, and the guide cylinder includes a plurality of side walls rotatably connected to the second guide roller, and the side wall has an avoidance gap arranged between the two first guide rollers and opening outward, and the avoidance gap exposes at least part of the structure of the second guide roller. During the hoisting process, when the hoisting rope deviates to one side, especially when the angle is deviated to a large extent, due to the avoidance gap on the side plate, the hoisting rope can pass through the avoidance gap and contact with the second guide roller, avoiding the hoisting rope from contacting the non-guide roller structure in the guide fixture, thereby avoiding the hoisting rope from being worn when passing through the observation hole, improving the service life of the hoisting rope, and eliminating the safety hazard of the hoisting rope breaking due to wear of the observation hole.

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present utility model.

[0040] like Figure 1 As shown, this embodiment provides a through-hole guide tool 10, which is arranged in the observation hole 6 of the boiler and is used to provide guidance for a partial structure of a rope-like object entering the observation hole 6. The rope-like object can be, for example, a lifting rope 7, which is used to fix a lifting object 8 inside the boiler.

[0041] like Figure 2 and Figure 3 As shown, the through-hole guide fixture 10 includes a guide cylinder 1, at least one guide roller group 2 and a second support plate 4. The extension direction of the guide cylinder 1 (for example Figure 2 The +y and -y directions shown in the figure are the same as the axial direction of the observation hole 6, and the rope passes through the observation hole 6 along the extension direction of the guide cylinder 1.

[0042] like Figure 3 As shown, the guide cylinder 1 includes a plurality of side plates 11, and a base 12 and a first support plate 13 arranged in parallel. The base 12 and the first support plate 13 are arranged in a first direction (eg Figure 3 In the first direction, the two ends of the side plate 11 are connected to the base 12 and the first support plate 13 respectively, and the base 12, the first support plate 13 and the plurality of side plates 11 are enclosed to form the guide cylinder 1. As an example, Figure 2 and Figure 3 As shown, the base 12 contacts the hole wall of the observation hole 6, the first support plate 13 is arranged opposite to the base 12 and is parallel to each other, the first support plate 13 is located above the base 12, the side plate 11 is arranged vertically, and the sides of the base 12 of the first support plate 13 are respectively connected to the two opposite sides of the side plate 11, wherein there are at least two side plates 11, and at least two side plates 11 are arranged opposite to each other to support the two sides of the first support plate 13 respectively, the side plates 11, the base 12 and the first support plate 13 are enclosed to form a guide cylinder 1, and the projection of the guide cylinder 1 in the extension direction is a rectangle. The number of side plates 11 can be set according to actual needs, for example, it can be four short plates, or it can be two long strip plates, and there is no limitation on this.

[0043] Continue to refer Figure 3 The second support plate 4 is connected to the outer wall of the guide cylinder 1 through the telescopic structure 5, and the surfaces of the base 11 and the second support plate 4 facing away from each other have an arc surface. Figure 2 and Figure 3 As shown, the second support plate 4 contacts the hole wall of the observation hole 6, and is arranged opposite to the base 12. The second support plate 4 is located above the base 12. The second support plate 4 is connected to the first support plate 13 through a telescopic structure 5, and the second support plate 4 is pressed against the hole wall of the observation hole 6. Through the cooperation of the base 12 and the second support plate 4, the installation and fixation of the through-hole guide tooling 10 in the observation hole 6 is realized. The bottom wall of the base 12 and the top wall of the second support plate 14, that is, the surface where the base 12 and the second support plate 4 contact the observation hole 6, have an arc surface, which is used to cooperate with the circular hole wall of the observation hole 6 to improve the installation strength, and at the same time, it can also effectively reduce the pressure of the mutual force at the contact point between the observation hole 6 and the through-hole guide tooling 10, and play a protective role for the observation hole 6 and the through-hole guide tooling 10 at the same time. In addition, since the circular observation hole 6 usually has a uniform diameter, by adjusting the relative position relationship between the base 12 and the second support plate 4 and the observation hole 6, the through-hole guide tooling 10 can be set at any angle in the observation hole 6 according to actual needs to ensure that the rope-like object can enter and exit the through-hole guide tooling 10 from the first guide roller 21 (described in detail later) along the extension direction of the through-hole guide tooling 10.

[0044] The guide roller group 2 is arranged at the end of the guide cylinder 1. When the rope-like object enters the guide cylinder 1, if the rope-like object and the guide cylinder are inclined, the guide roller group 2 can provide rolling support for the rope-like object to avoid contact and wear between the rope-like object and the inner wall of the guide cylinder 1. The number of guide roller groups 2 can be set according to actual needs. For example, when the length of the observation hole 6 in the extension direction is small, only one guide roller group 2 can be set. When the length of the observation hole 6 in the extension direction is long, guide roller groups 2 can be set at both ends of the guide cylinder 1 to provide guidance for the rope-like object at the inlet and outlet ends of the through-hole guide tooling 10. In addition, guide rollers can also be set inside the guide cylinder 1 to further avoid position displacement of the rope-like object. This embodiment does not impose any restrictions on this.

[0045] refer to Figure 3 The guide roller group 2 is arranged at the end of the guide cylinder 1, and each guide roller group 2 includes two first guide rollers 21 parallel to each other, and two second guide rollers 22 parallel to each other. The first guide roller 21 is arranged on the side of the second guide roller 22 away from the guide cylinder 1, and the first guide roller 21 is rotatably connected to the two opposite side plates 22, and the two first guide rollers 21 are arranged along the first direction (for example, Figure 3 The second guide roller 22 is rotatably connected to the base 12 and the first support plate 13, and the two first guide rollers 21 and the two second guide rollers 22 are surrounded to form the wire hole 3.

[0046] As an example, Figure 3 As shown, there are two guide roller groups 2, which are respectively located at the two ends of the guide cylinder 1 in the extension direction. The guide roller group 2 includes two first guide rollers 21 and two second guide rollers 22. When the two first guide rollers 21 and the two second guide rollers 22 are enclosed, a certain space can be formed in the middle position of the guide roller group 2, and the space is the wire hole 3 for the rope to pass through. Since the guide roller group is located at the end of the guide cylinder 1, the first guide roller 21 is arranged on the side of the second guide roller 22 away from the guide cylinder 1, that is, the first guide roller 21 is the guide roller located on the outside, and the rope enters the through-hole guide tooling 10 from the first guide roller 21. The axial direction of the first guide roller 21 ( Figure 3 +x and -x directions shown) and the first direction ( Figure 3 +z and -z directions shown) and the extension direction of the guide cylinder 1 ( Figure 3The first guide rollers 21 are arranged vertically, and the two ends of the rotation axis of each first guide roller 21 are rotatably connected to the two side plates 11 respectively arranged on both sides of the first support plate 13. The rotation connection can be achieved by, for example, setting a deep groove ball bearing between the first guide roller 21 and the side plate 11. The axial direction of the second guide roller 22 is the first direction. The arrangement direction of the two second guide rollers 22 is the same as the axial direction of the first guide roller 21. The two ends of the second guide roller 22 are rotatably connected to the top wall of the base 12 and the bottom wall of the first support plate 13 respectively. In one embodiment, the outer peripheral side walls of the first guide roller 21 and the second guide roller 22 are knurled, which can increase the sliding friction coefficient between the rope-like object and the guide rollers to prevent the rope-like object from deflecting.

[0047] By adopting this arrangement, on the one hand, the rope-like object can contact the side wall of the smooth first guide roller 21 when entering and exiting the through-hole guide tooling 10, effectively reducing the wear on the rope-like object 7; on the other hand, the sliding friction at the corner between the rope-like object and the observation hole 6 can be converted into the rolling friction of each guide roller, reducing the friction resistance encountered by the rope-like object when passing through the observation hole 6, which is beneficial for the operator to control the lifting process.

[0048] Continue to refer Figure 3 The side plate 11 has an escape notch 111, which is disposed between the two first guide rollers 21, and the escape notch 111 exposes at least part of the side wall of the second guide roller 22. As an example, Figure 3 As shown, each side plate 11 has an escape notch 111, and the escape notch 111 is located on both sides of the gap between the two first guide rollers 21 in the axial direction of the first guide roller 21. When the rope-like object deviates to one side on the first guide roller 21, due to the escape notch 111 on the side plate 11, the rope-like object can pass through the escape notch 111 and thus pass through the through-hole guide tooling, thereby avoiding contact and friction between the rope-like object and the side plate 11. Among them, at least part of the side wall of the second guide roller 22 can be exposed through the escape notch 111, so that even if the rope-like object deviates to a large extent, for example, along the axial direction parallel to the first guide roller 21 ( Figure 3 When the rope passes over the second guide roller 22 (in the +x and -x directions shown in the figure), the side plate 11 can also avoid direct contact with the rope and causing wear to the rope.

[0049] In the present embodiment, by the coordinated arrangement of the guide roller group 2 and the avoidance gap 111, when the rope-like object deviates to one side, even if a large degree of angular deviation occurs, it can pass through the avoidance gap 111 and contact with the second guide roller 22, thereby avoiding the contact between the lifting rope and the non-guide roller structure in the through-hole guide tooling 10, thereby avoiding the lifting rope from being worn when passing through the observation hole 6, thereby improving the service life of the lifting rope and eliminating the safety hazard of the lifting rope breaking due to wear from the observation hole.

[0050] In one embodiment, if Figure 4 As shown, the avoidance gap 111 includes two opposite gap side walls 113 and a gap bottom wall 112 connecting the two gap side walls 113. The two gap side walls 113 and the gap bottom wall 112 are U-shaped. In the first direction, at least part of the structure of the first guide roller 21 protrudes from the gap side walls 113. In the extension direction of the guide cylinder 1, at least part of the structure of the second guide roller 22 protrudes from the gap bottom wall 112. As an example, Figure 3 and Figure 4 As shown, the avoidance gap 111 is a flat plate-shaped space with one side open, and the two gap side walls 113 and the gap bottom wall 112 are arranged in a U shape, wherein the gap bottom wall 112 is opposite to the open side, and the two gap side walls 113 are arranged opposite to each other. When projected along the axial direction of the first guide roller 21, the projection surface of at least part of the structure of the first guide roller 21 overlaps with the projection surface of the avoidance gap 111 in the first direction, and the projection surface of at least part of the structure of the second guide roller 22 overlaps with the projection surface of the avoidance gap 111 in the extension direction of the guide cylinder 1, thereby expanding the avoidance space of the avoidance gap 111 for the rope-like object. In some embodiments, as Figure 4 As shown, the two notch side walls 113 and the notch bottom wall 112 both have arc-shaped surfaces, which further ensures the effect of avoiding the rope-like object and reducing friction.

[0051] In one embodiment, if Figure 3 As shown, in the first direction, the two ends of the side plate 11 are respectively connected to the side edge of the base 12 and the side edge of the first support plate 13, and the surface of the side plate 11 located on the inner ring of the guide cylinder 1 has a step structure, and the step structure abuts against the top surface of the base 12 or the bottom surface of the first support plate 13, or the step structure abuts against the top surface of the base 12 and the bottom surface of the first support plate 13. As an example, Figure 3 and Figure 4 As shown, on the side of the side plate 11 facing the inside of the guide cylinder 1, the part located between the base 12 and the first support plate 13 is a part of the inner ring of the guide cylinder 1, and the part is provided with at least one step structure. For example, the side plate 11 has a protrusion 116 on the side facing the inside of the guide cylinder 1, and a step surface 115 is formed between the protrusion 116 and other parts of the side plate 11 on the side facing the inside of the guide cylinder 1. The protrusion 116 abuts against the bottom surface of the first support plate 13 to provide a supporting force in the first direction for the first support plate to keep the guide cylinder structure stable. Of course, the protrusion 116 can also abut against the top surface of the base 12 to provide a supporting force in the first direction for the first support plate.

[0052] like Figure 2As shown, the rope passes through the observation hole 6 through the wire hole 3 formed in the guide roller group 2, so the wire hole 3 can directly affect the guiding effect and wear degree of the rope. Figure 5 As shown, in the axial direction of the first guide roller 21, the outer diameter of the first guide roller 21 is equal everywhere, and in the axial direction of the second guide roller 22, the outer diameter of the second guide roller 22 is equal everywhere, and the two first guide rollers 21 and the two second guide rollers 22 enclose a rectangular wire hole 3. As an example, Figure 3 and Figure 5 As shown, the first guide roller 21 and the second guide roller 22 are both cylindrical, and the first guide roller 21 and the second guide roller 22 are both arranged perpendicular to each other, with a certain gap between the two first guide rollers 21, and a certain gap between the two second guide rollers 22, so that the two first guide rollers 21 and the two second guide rollers 22 can enclose a rectangular wire hole 3, and when the rope passes through the wire hole 3, the first guide roller 21 and the second guide roller 22 can support the rope vertically. In one embodiment, since the rope is usually a round rope with uniform diameter, the gap between the two first guide rollers 21 and the gap between the two second guide rollers 22 are equal in size, so that the wire hole 3 has a square outline, ensuring that during the guiding process, the rope can be supported by two mutually perpendicular directions at the same time, thereby effectively limiting the position deviation of the rope.

[0053] In another embodiment, if Figure 6 As shown, in the axial direction of the first guide roller 21, the middle area of ​​the first guide roller 21 is provided with a first annular groove 211, and in the axial direction of the second guide roller 22, the middle area of ​​the second guide roller 22 is provided with a second annular groove 221. In one guide roller group 2, two first rotating rollers 21 and two second rotating rollers 22 enclose a circular profile of the wire hole 3. As an example, Figure 3 and Figure 6 As shown, a first annular groove 211 is provided on the portion of the first guide roller 21 between the two second guide rollers 22. The first annular groove 211 axially surrounds the first guide roller 21, and the inner concave surface of the first annular groove 211 is an arc surface. A second annular groove 221 is provided on the portion of the second guide roller 22 between the two first guide rollers 21. The second annular groove 221 axially surrounds the second guide roller 22, and the inner concave surface of the second annular groove 221 is also an arc surface. The first annular groove 211 and the partial arc surfaces of the second annular groove 221 constitute the circular contour of the wire hole 3. The wire hole 3 with a circular contour can be well matched with the outer peripheral contour of the round rope. Compared with the wire hole 3 with a square contour, the circular contour can evenly disperse the supporting force applied to the round rope through four contact points in the wire hole 3 with a square contour to a circumferential circle of the round rope, greatly reducing the supporting force pressure on the round rope.

[0054] In one embodiment, if Figure 3 and Figure 5 As shown, the plurality of side plates 11 form two side plate groups 110. In the extension direction of the guide cylinder 1, the two side plate groups 110 are disposed at both ends of the guide cylinder 1, wherein each side plate group 110 includes two opposite side plates 11. As an example, Figure 3 and Figure 5 As shown, the guide cylinder 1 includes four side panels 11, and the four side panels 11 are grouped in two layers to form two side panel groups 10. The two side panel groups 10 are respectively arranged at the two ends of the guide cylinder 1 and are respectively connected to the two guide roller groups 2. In one side panel group 10, the two side panels 11 are arranged opposite to each other and parallel to each other, and are respectively connected to the two ends of the first guide roller 21. Compared with setting two long strip side panels 11 in the guide cylinder 1, such a setting method is adopted to divide the side panel part structure into a plurality of smaller side panels 11, which significantly reduces the weight of the through-hole guide tooling 10 and facilitates the operator to carry and move the through-hole guide tooling 10. In addition, the four split side panels 11 are easy to replace individually, reducing the difficulty and cost of maintenance.

[0055] like Figure 2 and Figure 3 As shown, in this embodiment, the through-hole guide fixture 10 further includes a telescopic structure 5, which can adjust the distance between the guide cylinder 1 and the second support plate 4, and thus can simultaneously press the base 12 and the second support plate 4 against the hole wall of the observation hole 6 in opposite directions. Figure 3 As shown, the telescopic structure 5 includes a first adjusting nut 51 and a first screw 52, ​​the first screw 52 is connected to the first support plate 13, the first adjusting nut 51 is rotatably connected to the second support plate 4, and the first screw 52 is threadedly matched with the first adjusting nut 51. As an example, Figure 3 and Figure 5 As shown, one end of the first screw rod 52 is provided with a mounting seat and is fixed to the top wall of the first support plate 13 through the mounting seat. The first screw rod 52 is perpendicular to the top wall of the first support plate 13 and vertically faces the bottom wall of the second support plate 4. The first adjusting nut 51 and the bottom wall of the second support plate 4 can be rotatably connected, for example, by a bearing or other structure.

[0056] In addition, the telescopic structure 5 further includes a first linear bearing 53 and a first guide rod 54, the first linear bearing 53 is slidably connected to the first guide rod 54, one of the first linear bearing 53 and the first guide rod 54 is directly connected to the first support plate 13, and the other is directly connected to the second support plate 4. As an example, Figure 3As shown, the first guide rod 54 can be arranged with the first screw rod 52 along the extension direction of the guide cylinder 1, one end of the first guide rod 54 is also provided with a mounting seat and fixed on the top wall of the first support plate 13 through the mounting seat, the first guide rod 54 is perpendicular to the top wall of the first support plate 13 and vertically faces the bottom wall of the second support plate 4, the fixed end of the first linear bearing 53 is connected to the bottom wall of the second support plate 4, and the free end of the first linear bearing 53 is vertically facing the top wall of the first support plate 13. When the first adjusting nut 51 and the first adjusting nut 51 are threadedly matched and the first guide rod 54 is matched with the first linear bearing 53, the extension direction of the second support plate 4 is consistent with the extension direction of the guide cylinder 1. Of course, the first guide rod 54 can also be installed on the bottom wall of the second support plate 4 through the mounting seat, at which time the fixed end of the first linear bearing 53 is connected to the top wall of the first support plate 13, and there is no restriction on this.

[0057] When the first screw rod 52 rotates on the first adjusting nut 51 through threaded engagement, the first screw rod 52 can move up and down on the first adjusting nut 51, thereby driving the second support plate 4 to move up and down. The first linear bearing 53 and the first guide rod 54 enable the telescopic structure 5 to form two-point support for both the guide cylinder 1 and the second support plate 4, making the structure more stable.

[0058] Continue to refer Figure 3 In one embodiment, the guide cylinder 1 further includes at least one support column 14, the two ends of which are respectively connected to the top surface of the base 12 and the bottom surface of the first support plate 13, and the support column 14 provides support for the first support plate 13 in the first direction. As an example, Figure 3 As shown, when the through-hole guide fixture 10 is long in the extension direction, the first support plate 13 is also in the shape of a long strip plate, which is easy to bend. Therefore, a support rod 16 is arranged on one side of the Bailey telescopic structure 5 of the first support plate 13, so that when the telescopic structure 5 applies pressure to the middle part of the first support plate 13, the first support plate 13 can stably maintain its shape. One end of the support rod 16 is vertically fixed to the top wall of the base 12, and the other end is vertically fixed to the bottom surface of the first support plate 13. One support rod 16 can be arranged, or multiple support rods 16 can be arranged and distributed inside the guide cylinder 1 according to actual needs to improve the support effect, and there is no limitation on this.

[0059] refer to Figure 1Since the hoisted object 8 in industrial production often has a large mass, the hoisting rope 7 is subjected to a huge pulling force from the hoisting object 8, and part of the pulling force is transmitted to the through-hole guide fixture 10 through the friction between the hoisting rope 7 and the through-hole guide fixture 10. The hoisted object 8 exerts a pulling effect on the through-hole guide fixture 10 toward the inside of the boiler through the hoisting rope 7, which can cause the through-hole guide fixture 10 to detach from the observation hole 6 and fall into the inside of the boiler. Correspondingly, the through-hole guide fixture 10 can also fall from the other end of the observation hole 6 due to the force from the outside of the boiler. Therefore, the through-hole guide fixture 10 in the observation hole 6 needs to be reinforced.

[0060] In one example, if Figure 2 and Figure 3 As shown, in the extension direction of the guide cylinder 1, at least one end of the second support plate 4 is provided with a clamping plate 42, the clamping plate 42 is arranged at an angle with the second support plate 4, and the free end of the clamping plate 42 extends out of the hole wall of the observation hole 6 in the direction away from the guide cylinder 1. As an example, Figure 2 and Figure 3 As shown, one end of the second support plate 4 in the extension direction extends out of the observation hole 6, and the portion of the end extending out of the observation hole 6 is provided with a clamping plate 42, which can be the end of the second support plate 4 facing the inside of the boiler, or the end of the second support plate 4 facing the outside of the boiler. Of course, clamping plates 42 can also be provided at both ends of the second support plate 4, and there is no limitation on this. The clamping plate 42 and the second support plate 4 form a bending structure, and an angle is formed between the two, for example, a right angle, and the clamping plate 42 is bent in the radial direction away from the guide cylinder 1 toward the observation hole 6, and at least part of the structure of the clamping plate 42 extends out of the hole wall of the observation hole 6, so that when the through-hole guide fixture 10 continues to move along the extension direction of the observation hole 6, the clamping plate 42 can abut against the end face of the observation hole 6, thereby preventing the through-hole guide fixture 10 from continuing to move, and effectively preventing the through-hole guide fixture 10 from falling off due to force.

[0061] Continue to refer Figure 3 In one embodiment, a first recessed area 41 is provided on the surface of the second support plate 4 that is away from the base 12, and a first elastic member (not shown in the drawings) is filled in the first recessed area 41. In another embodiment, a second recessed area (not shown in the drawings) is provided on the surface of the base 12 that is away from the second support plate 4, and a second elastic member (not shown in the drawings) is filled in the second recessed area (not shown in the drawings). As an example, Figure 3As shown, there is a first recessed area 41 that is recessed downward on the top surface of the second support plate 4. The specific shape of the first recessed area 41 can be set according to actual needs and is not limited here. The first recessed area 41 is filled with a first elastic member, which can be elastically deformed and thus make the second support plate 4 better match the hole wall shape of the observation hole 6. At the same time, it can also increase the friction between the second support plate 4 and the observation hole 6, and reinforce the through-hole guide fixture 10. The first elastic member can be, for example, a rubber member, a silicone member, etc. that can completely or partially fill the first recessed area 41. The specific settings of the second recessed area and the second elastic member can refer to the first recessed area 41 and the first elastic member, and will not be repeated here.

[0062] The contents described in the embodiments of this specification are merely an enumeration of the implementation forms of the utility model concept. The protection scope of the utility model should not be deemed to be limited to the specific forms described in the embodiments. The protection scope of the utility model also includes equivalent technical means that can be thought of by technical personnel in this field based on the concept of the utility model.

Claims

1. A via guide tool, characterized in that: It is arranged in the observation hole of the boiler and is used to provide guidance for the rope-like object that partially enters the observation hole. The through-hole guide tooling includes: A guide cylinder, comprising a plurality of side plates, and a base and a first support plate arranged in parallel, wherein the base and the first support plate are arranged along a first direction, and in the first direction, two ends of the side plates are respectively connected to the base and the first support plate, and the base, the first support plate and the plurality of side plates enclose the guide cylinder; At least one guide roller group is arranged at the end of the guide cylinder, each of the guide roller groups includes two first guide rollers parallel to each other, and two second guide rollers parallel to each other, the first guide roller is rotatably connected to the two opposite side plates, and the two first guide rollers are arranged along the first direction, the second guide roller is rotatably connected to the base and the first support plate, and the two first guide rollers and the two second guide rollers are combined to form a wire hole; wherein the side plate has an avoidance gap, the avoidance gap is arranged between the two first guide rollers and the opening faces the outside of the guide cylinder, and in the opening direction of the avoidance gap, the two second guide rollers and the two first guide rollers are arranged in sequence, and the avoidance gap exposes at least part of the side wall of the second guide roller; The second support plate is connected to the outer wall of the guide cylinder through a telescopic structure, and the surfaces of the base and the second support plate facing away from each other have arc surfaces.

2. The via guide tool according to claim 1, characterized in that: The avoidance gap includes two opposite gap side walls and a gap bottom wall connecting the two gap side walls, and the two gap side walls and the gap bottom wall are U-shaped; In the first direction, at least a portion of the structure of the first guide roller protrudes from the side wall of the notch; In the extending direction of the guide cylinder, at least a part of the structure of the second guide roller protrudes from the bottom wall of the notch.

3. The via guide tool according to claim 1, characterized in that: In the first direction, two ends of the side plate are respectively connected to the side edge of the base and the side edge of the first support plate; The surface of the side plate located on the inner ring of the guide cylinder has a step structure, and the step structure abuts against the top surface of the base and / or the bottom surface of the first support plate.

4. The via guide tool according to claim 1, characterized in that: In the axial direction of the first guide roller, the outer diameter of the first guide roller is equal everywhere, and in the axial direction of the second guide roller, the outer diameter of the second guide roller is equal everywhere; In one of the guide roller groups, two of the first guide rollers and two of the second guide rollers enclose a wire hole with a rectangular outline.

5. The via guide tool according to claim 1, characterized in that: In the axial direction of the first guide roller, a first annular groove is provided in the middle area of ​​the first guide roller, and in the axial direction of the second guide roller, a second annular groove is provided in the middle area of ​​the second guide roller; In one of the guide roller groups, two of the first guide rollers and two of the second guide rollers enclose a wire hole with a circular contour.

6. The via guide tool according to any one of claims 1 to 5, characterized in that: The plurality of side plates form two side plate groups, and in the extension direction of the guide cylinder, the two side plate groups are arranged at both ends of the guide cylinder; Wherein, each of the side panel groups includes two opposite side panels.

7. The via guide tool according to claim 1, characterized in that: The telescopic structure comprises a first adjusting nut and a first screw, wherein the first screw is connected to the first supporting plate, the first adjusting nut is rotatably connected to the second supporting plate, and the first screw is threadably matched with the first adjusting nut; The telescopic structure also includes a first linear bearing and a first guide rod, the first linear bearing is slidably connected to the first guide rod, one of the first linear bearing and the first guide rod is directly connected to the first support plate, and the other is directly connected to the second support plate.

8. The via guide tool according to claim 1, characterized in that: The guide cylinder further includes at least one support column, two ends of which are respectively connected to the top surface of the base and the bottom surface of the first support plate, and the support column provides support for the first support plate in the first direction.

9. The via guide tool according to claim 1, characterized in that: In the extension direction of the guide cylinder, at least one end of the second support plate is provided with a clamping plate, the clamping plate is arranged at an angle with the second support plate, and the free end of the clamping plate extends out of the hole wall of the observation hole in a direction away from the guide cylinder.

10. The via guide tool according to claim 1 or 9, characterized in that: A first recessed area is provided on a surface of the second support plate which is away from the base, and a first elastic member is filled in the first recessed area; and / or, A second recessed area is provided on a surface of the base which is away from the second support plate, and a second elastic member is filled in the second recessed area.

Images