Adjustable anti-falling brake arm

Abstract

The invention discloses an adjustable anti-falling brake arm. Comprising a brake rod with a first hinge hole in the middle, a second hinge hole in one end and a connecting hole in the other end; a friction surface is arranged at one end of the friction head, an opening groove is formed in the other end of the friction head, and strip-shaped holes are formed in two opposite side walls of the opening groove; the end, away from the second hinge hole, of the brake rod is embedded into the open groove, and the connecting hole is aligned with the strip-shaped hole and provided with a fastener. And the relative position of the friction head and the brake rod can be adjusted by aligning different positions of the connecting hole and the strip-shaped hole. The brake arm is designed to be two independent parts, the brake rod and the friction head are aligned through different positions of the connecting hole and the strip-shaped hole, the fastener is installed to adjust and fix the overall length of the brake arm, operation is easy and fast, the installation and adjustment time is shortened, the labor intensity is reduced, and due to the adjusting function, the brake arm is convenient to use. Adjustment can be carried out under the condition that the whole component is not replaced, and the maintenance cost and the replacement frequency are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of converter oxygen supply, in particular to an adjustable anti-falling brake arm. Background Art

[0002] The oxygen lance anti-fall device is a reliable anti-fall device for the oxygen lance lifting trolley in the converter oxygen supply system, and the brake arm in the anti-fall device is a key spare part for anti-fall. The brake arm designed in the early stage is an integral type without any telescopic adjustment function. It is designed after the oxygen lance lifting trolley and the oxygen lance fixed track are installed and positioned after the converter is put into production. After a period of use, the fixed track and the oxygen lance trolley will deform. This deformation will inevitably change the gap value between the brake arm and the fixed track. This gap value is particularly important in the realization of the oxygen lance anti-fall function. If the gap value is too small, the brake arm cannot be flipped upward, and the brake arm cannot contact the fixed guide rail. If the gap value is too large, the brake arm flips over, and the brake arm cannot contact the fixed guide rail. Due to the change in the gap value, the early brake arm cannot meet the demand, that is, it cannot guarantee the realization of the normal function of the anti-fall device at all, and there is a great safety risk. Therefore, an adaptable and adjustable brake arm is required to meet the assembly requirements through the adjustment of the telescopic length, and finally ensure the oxygen lance anti-fall function. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides an adjustable anti-fall brake arm.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] An adjustable anti-fall brake arm comprises: a brake rod, which is provided with a first hinge hole in the middle, a second hinge hole at one end, and a connecting hole at the other end; a friction head, which is provided with a friction surface at one end and an open groove at the other end, and two opposite side walls of the open groove are provided with strip holes; wherein the end of the brake rod away from the second hinge hole is embedded in the open groove, and the connecting hole is aligned with the strip hole and fasteners are installed; the connection hole is aligned with the strip hole at different positions to adjust the relative position of the friction head and the brake rod, that is, to adjust the length of the entire brake arm.

[0006] Furthermore, the fastener is a bolt and a nut matched with the bolt, and one end of the bolt passes through the strip hole and the connecting hole and is connected to the nut.

[0007] Furthermore, the connection holes are provided in at least two groups, the number of the strip-shaped holes corresponds to the number of the connection hole groups, and the connection holes in the same group are arranged along the length direction of the brake rod.

[0008] Furthermore, the brake rod has an abutment end face at one end away from the second hinge hole, and the opening groove has an abutment side wall relative to the abutment end face, the abutment end face and the abutment side wall form a certain angle and the spacing narrows downward; an adjustment block is sandwiched between the abutment end face and the abutment side wall, and the adjustment block has a first fitting surface that fits with the abutment end face and a second fitting surface that fits with the abutment side wall, a connecting plate is provided on the top of the opening groove, a threaded hole is provided on the connecting plate, an adjusting screw is connected to the threaded hole, and the adjusting screw abuts against the upper end of the adjustment block.

[0009] Furthermore, the side wall at the top of the brake rod is in contact with the bottom surface of the connecting plate, and the length direction of the strip-shaped hole is parallel to the bottom surface of the connecting plate.

[0010] Furthermore, the side wall at the top of the brake rod is provided with a card slot arranged along the length direction of the strip hole, and a movable rod is elastically and movably installed on the connecting plate, and the movable rod has a card block that can be embedded in the card slot.

[0011] Furthermore, the movable rod is hinged to the connecting plate via a hinge shaft, a torsion spring is sleeved on the hinge shaft, the torsion spring is used to apply an elastic force to the movable rod, and the elastic force is used to push the block on the movable rod to embed into the slot.

[0012] Furthermore, a mounting groove is provided on the upper end of the connecting plate for the movable rod part to be embedded in, and a through hole is provided on the bottom wall of the mounting groove corresponding to the card block for the card block to pass through.

[0013] Furthermore, an upward-tilted pressing portion is provided at one end of the movable rod away from the clamping block.

[0014] Furthermore, the friction surface has a profile of an arc surface, and the friction surface is provided with an anti-slip structure.

[0015] The present invention has the following beneficial effects:

[0016] The brake arm is designed as two independent parts, and the brake rod and the friction head are aligned at different positions of the connecting hole and the strip hole and fasteners are installed to adjust and fix the overall length of the brake arm. The operation is simple and fast, reducing the time and labor intensity of installation and adjustment. The brake arm can be telescopically adjusted according to the change of the gap value between the brake arm and the fixed track, so as to adapt to different installation requirements and improve the adaptability and flexibility of the brake arm. Since the brake arm can adjust the length, it can ensure that after the fixed track and the oxygen gun trolley are deformed, the brake arm can be adjusted in length according to the actual situation to adapt to the deformation, avoiding the problem that the brake arm cannot work normally due to the gap value being too small or too large, thereby significantly improving the safety of the oxygen gun anti-fall device, instead of having to replace the entire brake arm of different lengths once the fixed track and the oxygen gun trolley are deformed like the brake arm of the prior art, which increases the maintenance cost and maintenance time. However, the brake arm in the present application has an adjustment function, so it can be adjusted without replacing the entire component, reducing the maintenance cost, replacement frequency and maintenance time.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0020] Figure 2 yes Figure 1 Schematic diagram of the decomposed state structure;

[0021] Figure 3 It is a schematic diagram of the structure of the friction head;

[0022] Figure 4 is a cross-sectional view of a second embodiment of the present invention;

[0023] Figure 5 yes Figure 4 A magnified view of point A;

[0024] Figure 6 yes Figure 4 A magnified view of point B;

[0025] Figure 7 is a schematic diagram of the overall structure of the second embodiment of the present invention;

[0026] Figure 8 yes Figure 7Schematic diagram of the decomposed state structure.

[0027] Legend:

[0028] Brake rod 100, first hinge hole 110, second hinge hole 120, connecting hole 130, abutting end surface 140, and slot 150;

[0029] The friction head 200, the friction surface 210, the opening groove 220, the abutting side wall 221, the strip hole 230, the connecting plate 240, the threaded hole 241, the mounting groove 242, the through hole 243, the adjusting screw 250, the movable rod 260, the block 261, the hinge shaft 262, the torsion spring 263, and the pressing portion 264;

[0030] Bolt 300, nut 310;

[0031] Adjustment block 400 , first bonding surface 410 , and second bonding surface 420 . DETAILED DESCRIPTION

[0032] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] Please refer to Figure 1 and Figure 2An adjustable anti-fall brake arm in a preferred embodiment of the present invention includes a brake rod 100 and a friction head 200.

[0037] A first hinge hole 110 is provided in the middle of the brake rod 100, and the first hinge hole 110 is hinged to the frame. A second hinge hole 120 is provided at one end of the brake rod 100, and the second hinge hole 120 is used to connect a driving mechanism that drives it around the first hinge hole 110 to achieve automatic control. A connecting hole 130 is provided at the other end of the brake rod 100, and the connecting hole 130 penetrates along the thickness direction of the brake rod 100. A friction surface 210 is provided at one end of the friction head 200, and an open groove 220 is provided at the other end, and two opposite side walls of the open groove 220 are provided with strip holes 230.

[0038] The end of the brake rod 100 away from the second hinge hole 120 is embedded in the opening groove 220, and the connecting hole 130 is aligned with the strip hole 230 and fasteners are installed. The different positions of the connecting hole 130 and the strip hole 230 can adjust the relative position of the friction head 200 and the brake rod 100, thereby adjusting the distance between the friction surface 210 and the first hinge hole 110 and the second hinge hole 120, that is, adjusting the effective length of the anti-fall brake arm.

[0039] In a preferred embodiment of the present invention, an adjustable anti-falling brake arm is designed as two independent parts. The brake rod 100 and the friction head 200 are aligned at different positions of the connecting hole 130 and the strip hole 230 and fasteners are installed to adjust and fix the overall length of the brake arm. The operation is simple and fast, and the time and labor intensity of installation and adjustment are reduced. The brake arm can be telescopically adjusted according to the change of the gap value between the brake arm and the fixed track, so as to adapt to different installation requirements and improve the adaptability and flexibility of the brake arm. Since the brake arm can adjust the length, it can ensure that after the fixed track and the oxygen gun trolley are deformed, the brake arm can be adjusted in length according to the actual situation to adapt to the deformation, avoiding the problem that the brake arm cannot work normally due to too small or too large gap value, thereby significantly improving the safety of the oxygen gun anti-falling device, and it is not necessary to replace the entire brake arm once the fixed track and the oxygen gun trolley are deformed like the brake arm of the prior art, which increases the maintenance cost. However, the brake arm in the present application has an adjustment function, so it can be adjusted without replacing the entire component, which reduces the maintenance cost and replacement frequency.

[0040] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the fastener is a bolt 300 and a nut 310 adapted to the bolt. One end of the bolt 300 passes through the bar hole 230 and the connecting hole 130 and is connected to the nut 310, thereby connecting and fixing the brake rod 100 and the friction head 200.

[0041] Reference Figure 2and Figure 3 In some embodiments of the present invention, at least two groups of connection holes 130 are provided, and the number of strip holes 230 corresponds to the number of groups of connection holes 130. The connection holes 130 in the same group are arranged along the length direction of the brake rod 100, so that the fasteners on the connection holes 130 can move along the length direction of the strip holes 230 (the length direction of the brake rod 100) to adjust the installation position, thereby achieving the length adjustment of the anti-fall brake arm. Multiple groups of connection holes 130 are provided to achieve multi-position connection, thereby improving the stability and reliability of connection fixation.

[0042] Reference Figure 4 In some embodiments of the present invention, the end of the brake rod 100 away from the second hinge hole 120 has an abutting end face 140, and the open groove 220 has an abutting side wall 221 relative to the abutting end face 140, the abutting end face 140 and the abutting side wall 221 form a certain angle and the spacing is narrowed downward; an adjustment block 400 is sandwiched between the abutting end face 140 and the abutting side wall 221, and the adjustment block 400 has a first abutting surface 410 abutting with the abutting end face 140 and a second abutting surface 420 abutting with the abutting side wall 221, and a connecting plate 240 is provided at the top of the open groove 220, and a threaded hole 241 is provided on the connecting plate 240, and an adjusting screw 250 is connected to the threaded hole 241, and the adjusting screw 250 abuts against the upper end of the adjusting block 400. Since the friction surface 210 will contact the external structure to realize friction braking, the maximum force received by the friction head 200 during operation is all generated at the friction surface 210. This force has a tendency to push the friction head 200 toward the brake rod 100. Under long-term action, the distance between the friction head 200 and the brake rod 100 (that is, the distance between the abutting end surface 140 and the abutting side wall 221) may become smaller. Therefore, an adjustment block 400 is provided to fix the distance between the friction head 200 and the brake rod 100 so that the distance between the friction head 200 and the brake rod 100 at least cannot be reduced, and the abutting end surface 140 and the abutting side wall 221 form a certain angle and the distance is narrowed downward, and the first abutting The mating surface 410 and the second mating surface 420 are respectively in contact with the abutting end surface 140 and the abutting side wall 221, so that the adjustment block 400 is stably clamped by the friction head 200 and the brake rod 100, and the adjustment block 400 can also move up and down to adapt to the distance between the abutting end surface 140 and the abutting side wall 221, that is, to adapt to the adjustment length of the brake arm. Of course, if the distance changes greatly, adjustment blocks 400 with different width specifications can also be used. The adjusting screw 250 is abutted against the upper end of the adjustment block 400, which is used to fix the adjustment block 400 to prevent the adjustment block 400 from moving upward and causing the distance between the friction head 200 and the brake rod 100 to be unable to be fixed, resulting in relative displacement during use.

[0043] Reference Figure 4In some embodiments of the present invention, the side wall of the top of the brake rod 100 is fitted with the bottom surface of the connecting plate 240, and the length direction of the strip hole 230 is parallel to the bottom surface of the connecting plate 240, so as to avoid the connecting plate 240 from interfering with the brake rod 100. During adjustment, the bottom surface of the connecting plate 240 can also serve as a fitting and positioning structure for the top of the brake rod 100, so that the strip hole 230 and the connecting hole 130 are easier to align during installation, which is convenient for installation.

[0044] Reference Figure 5 In some embodiments of the present invention, the side wall at the top of the brake rod 100 is provided with a card slot 150 arranged along the length direction of the strip hole 230, and a movable rod 260 is elastically and movably installed on the connecting plate 240. The movable rod 260 has a card block 261 that can be embedded in the card slot 150. During installation, if it is adjusted to a suitable position, the position may float when the fastener is installed, resulting in installation deviation after installation. Repeated adjustments may be required, and the operation is more troublesome. However, using the card block 261 to embed in the card slot 150 can ensure that after adjusting to a suitable position, the brake rod 100 and the friction head 200 can be temporarily fixed, so that when the fastener is installed later, the brake rod 100 and the friction head 200 will not be relatively displaced, thereby ensuring position stability and improving adjustment accuracy and efficiency.

[0045] Reference Figure 6 In some embodiments of the present invention, the movable rod 260 is hinged to the connecting plate 240 through a hinge shaft 262, and a torsion spring 263 is sleeved on the hinge shaft 262. The torsion spring 263 is used to apply an elastic force to the movable rod 260, and the elastic force is used to push the block 261 on the movable rod 260 to be embedded in the slot 150. The torsion spring 263 has two extended action arms, one action arm contacts the movable rod 260, and the other action arm contacts the connecting plate 240, thereby applying an elastic force to the movable rod 260. The elastic force is used to make the block 261 stably embedded in the slot 150 and maintain the embedded state, so that the position is stable when the bar hole 230 and the connecting hole 130 are aligned and the fastener is installed. When adjustment is required, the movable rod 260 is operated to lift the block 261 and detach it from the slot 150, which is simple and convenient to operate.

[0046] Reference Figure 7 and Figure 8 In some embodiments of the present invention, the upper end of the connecting plate 240 is provided with a mounting groove 242 for partially embedding the movable rod 260, the bottom wall of the mounting groove 242 is provided with a through hole 243 for the block 261 to pass through, and the side wall of the mounting groove 242 and the movable rod 260 are provided with corresponding holes to achieve hinge connection through the hinge axis. The through hole 243 allows the block 261 to pass through the embedded slot 150 to avoid structural interference.

[0047] Reference Figure 7and Figure 8 In some embodiments of the present invention, an upturned pressing portion 264 is provided at one end of the movable rod 260 away from the block 261, so that when the movable rod 260 needs to be operated to disengage the block 261 from the slot 150, the pressing portion 264 can be pressed downward, which is simple and convenient to operate.

[0048] In some embodiments of the present invention, the friction surface 210 has an arc profile and is provided with an anti-skid structure. The anti-skid structure may be a structure capable of increasing friction, such as anti-skid patterns and anti-skid grooves.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable anti-fall brake arm, characterized in that: include: A brake rod (100) is provided with a first hinge hole (110) in the middle, a second hinge hole (120) at one end, and a connection hole (130) at the other end; A friction head (200) having a friction surface (210) at one end and an open groove (220) at the other end, wherein two opposite side walls of the open groove (220) are provided with strip-shaped holes (230); The end of the brake rod (100) away from the second hinge hole (120) is embedded in the opening groove (220), and the connecting hole (130) is aligned with the strip hole (230) and is installed with a fastener; The relative position of the friction head (200) and the brake rod (100) can be adjusted by aligning the connection hole (130) with the strip hole (230) at different positions.

2. The adjustable anti-fall brake arm according to claim 1, characterized in that: The fastener is a bolt (300) and a nut (310) matched with the bolt. One end of the bolt (300) passes through the strip hole (230) and the connecting hole (130) and is connected to the nut (310).

3. The adjustable anti-fall brake arm according to claim 1, characterized in that: The connection holes (130) are provided with at least two groups, the number of the strip-shaped holes (230) corresponds to the number of the connection holes (130) groups, and the connection holes (130) in the same group are arranged in an array along the length direction of the brake rod (100).

4. The adjustable anti-fall brake arm according to claim 1, characterized in that: The end of the brake rod (100) away from the second hinge hole (120) has an abutting end surface (140), and the opening groove (220) has an abutting side wall (221) relative to the abutting end surface (140), and the abutting end surface (140) and the abutting side wall (221) form a certain angle and the spacing is narrowed downward; an adjustment block (400) is sandwiched between the abutting end surface (140) and the abutting side wall (221), and the adjustment block (400) is 00) has a first mating surface (410) that is in contact with the abutting end surface (140) and a second mating surface (420) that is in contact with the abutting side wall (221); a connecting plate (240) is provided at the top of the opening groove (220); a threaded hole (241) is provided on the connecting plate (240); an adjusting screw (250) is connected to the threaded hole (241); and the adjusting screw (250) abuts against the upper end of the adjustment block (400).

5. The adjustable anti-fall brake arm according to claim 4, characterized in that: The side wall at the top of the brake rod (100) is in contact with the bottom surface of the connecting plate (240), and the length direction of the strip-shaped hole (230) is parallel to the bottom surface of the connecting plate (240).

6. The adjustable anti-fall brake arm according to claim 5, characterized in that: The side wall at the top of the brake rod (100) is provided with a card slot (150) arranged along the length direction of the strip hole (230), and a movable rod (260) is elastically and movably mounted on the connecting plate (240), and the movable rod (260) has a card block (261) that can be embedded in the card slot (150).

7. The adjustable anti-fall brake arm according to claim 6, characterized in that: The movable rod (260) is hinged to the connecting plate (240) via a hinge shaft (262); a torsion spring (263) is sleeved on the hinge shaft (262); the torsion spring (263) is used to apply an elastic force to the movable rod (260); the elastic force is used to push the clamping block (261) on the movable rod (260) to embed into the clamping slot (150).

8. The adjustable anti-fall brake arm according to claim 7, characterized in that: The upper end of the connecting plate (240) is provided with a mounting groove (242) for the movable rod (260) to be partially embedded, and the bottom wall of the mounting groove (242) is provided with a through hole (243) for the block (261) to pass through, corresponding to the block (261).

9. The adjustable anti-fall brake arm according to claim 7, characterized in that: An end of the movable rod (260) away from the clamping block (261) is provided with an upwardly tilted pressing portion (264).

10. The adjustable anti-fall brake arm according to claim 1, characterized in that: The friction surface (210) has a curved profile, and the friction surface (210) is provided with an anti-slip structure.

Images