Heavy hammer for stock rod of blast furnace

Abstract

The utility model provides a heavy hammer for a stock rod of a blast furnace. The heavy hammer comprises a hammer body, a chain and a pin shaft, the upper part of the hammer body is provided with a circular truncated cone body, the upper end surface of the circular truncated cone body is downwards concavely provided with a cross-shaped blind hole-shaped cavity, and the cross-shaped blind hole-shaped cavity comprises a first slotted hole and a second slotted hole; the first slotted hole and the second slotted hole are arranged in a crossed manner, and the empty hole depth of the first slotted hole is greater than that of the second slotted hole; a pin hole is formed in the portion, under the second groove hole, of the circular truncated cone body, penetrates through the circular truncated cone body and intersects with the first groove hole. The chain extends downwards along the first slotted hole; a fixing hole is formed in the chain, and the fixing hole and the pin hole are located in the same height position; the pin shaft is located in the pin hole, penetrates through the fixing hole along the pin hole and is fixedly connected with the circular truncated cone body. The heavy hammer for the blast furnace stock rod is simple in structure and convenient to install, effectively reduces abrasion between the chain and the hammer body, has the service life of more than one year, solves the problems that a heavy hammer in the prior art is short in service life and the like, and is high in applicability.

Description

Technical Field

[0001] The utility model relates to the field of probes for blast furnace smelting, in particular to a heavy hammer for the probe of the blast furnace. Background Art

[0002] The blast furnace probe is the eye of the process operation, which directly affects the accurate material distribution of the blast furnace. When the probe is working, the weight of the probe slowly drops under the reverse electromagnetic torque of the motor. At this time, a relatively large current passes through the motor. When the weight contacts the material in the blast furnace, the gravity decreases and the motor current suddenly decreases. After the detection circuit detects this signal, it can know how many meters the weight has dropped in this process, and thus know the position of the material line in the furnace. Therefore, once the weight of the probe falls, the probe can no longer be used.

[0003] When the blast furnace sounding rod is working, the weight is in a temperature environment of 400℃ to 600℃ for a long time. The weight structure of the existing blast furnace sounding rods is that a lifting ring is set on the top of the weight and connected with a chain through a shackle or directly passed through a wire rope and fixed with a rope clamp.

[0004] For example, the Chinese utility model patent with the authorization announcement number CN201416011Y records a weight device for a probe, including a drum, a chain and a weight, the end of the chain is connected to the weight, the weight device for the probe also includes a wire rope, a chain groove and a wire groove are provided on the outer circumferential surface of the drum, the beginning of the chain is connected to one end of the wire rope, and the other end of the wire rope is wound in the wire rope groove. This patent only solves the problem of the large volume of the probe drum. In actual use, the weight has the problem that the buckle at the connection between the chain and the weight is easy to deform and break, or the wire rope is stuck and the weight falls off, and the problem that the service life is usually only one to two months has not been improved. Utility Model Content

[0005] The main purpose of the utility model is to provide a heavy hammer for a blast furnace probe, aiming to solve the problems of short service life of the heavy hammer in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a heavy hammer for a blast furnace probe, comprising a hammer body, a chain and a pin shaft.

[0007] A truncated cone body is provided on the upper part of the hammer body, and a cross-shaped blind hole cavity is recessed downward on the upper end surface of the truncated cone body, and the cross-shaped blind hole cavity includes a first slot hole and a second slot hole; the first slot hole and the second slot hole are cross-arranged, and the empty hole depth of the first slot hole is greater than the empty hole depth of the second slot hole.

[0008] The truncated cone body is provided with a pin hole directly below the second slot hole. The pin hole passes through the truncated cone body and is arranged crosswise with the first slot hole.

[0009] The chain extends downward along the first slot hole; a fixing hole is provided on the chain, and the fixing hole and the pin hole are at the same height position.

[0010] The pin shaft is located in the pin hole, passes through the fixing hole along the pin hole, and is fixedly connected to the frustum body.

[0011] Preferably, the diameter of the chain is less than the diameter of the cross-shaped blind hole cavity and is ≤1.2 times the diameter of the chain.

[0012] Preferably, the fixed connection is by welding.

[0013] Preferably, a cylinder is provided at the lower part of the hammer body; the ratio of the axial length of the truncated cone body to the axial length of the cylinder is 1:2.

[0014] Preferably, the bottom end of the cylinder is further provided with a chamfered portion; the angle of the chamfered portion is 40 to 75°.

[0015] Preferably, the material of the weight for the blast furnace probe is cast steel, forged steel or cast iron.

[0016] Beneficial effects achieved by the utility model:

[0017] The utility model provides a cross-shaped blind hole-shaped cavity on the upper end surface of the hammer body of the blast furnace probe hammer to allow the chain to be inserted, and then fixes the chain through a pin shaft in the pin hole, so that the blast furnace probe hammer is stably connected to the chain. The blast furnace probe hammer has a simple structure and is easy to install, effectively reducing the wear between the chain and the hammer body, and has a service life of more than one year, and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the front view of the structure of a heavy hammer for a blast furnace probe according to an optional embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the left side view of the structure of a heavy hammer for a blast furnace probe according to an optional embodiment of the utility model;

[0021] Figure 3 The present invention is a schematic diagram of a top view of the structure of a heavy hammer for a blast furnace probe according to an optional embodiment of the present invention.

[0022] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the purpose, technical solution and advantages of the utility model, the following will be combined with the accompanying drawings and embodiments to further describe the embodiment. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] It should be noted that all directional indications (such as up, down, etc.) in the implementation mode of the utility model 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.

[0025] In addition, in the present invention, the descriptions of "first", "second", etc. 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" or "second" may explicitly or implicitly include at least one of the features.

[0026] Furthermore, the technical solutions between the various implementation modes of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] Reference Figure 1 to Figure 3 In order to solve the problems of short service life of the heavy hammer in the prior art, the utility model provides a heavy hammer for a blast furnace probe, comprising a hammer body, a chain and a pin shaft.

[0028] The upper part of the hammer body is provided with a truncated cone body 4, and the upper end surface of the truncated cone body 4 is concavely provided with a cross-shaped blind hole cavity, and the cross-shaped blind hole cavity includes a first slot 2 and a second slot 1; the first slot 2 and the second slot 1 are arranged in a cross shape, and the hole depth of the first slot 2 is greater than the hole depth of the second slot 1. In an optional embodiment, refer to Figure 3 , the first slot hole 2 and the second slot hole 1 are arranged vertically.

[0029] The truncated cone body 4 is provided with a pin hole 3 directly below the second slot hole 1. The pin hole 3 penetrates the truncated cone body 4 and is arranged crosswise with the first slot hole 2. In an optional embodiment, referring to Figure 1 and Figure 2 The pin hole 3 is arranged directly below the second slot hole 1 and parallel to the second slot hole 1 .

[0030] The chain extends downward along the first slot 2; a fixing hole is provided on the chain, and the fixing hole and the pin hole 3 are at the same height. Figure 2 The chain extends downward along the first slot hole 2, and a second slot hole 1 is provided in a vertical direction to the first slot hole 2. When the chain in the cross-shaped blind hole cavity formed by the first slot hole 2 and the second slot hole 1 swings, since the gap between the chain and the hammer body in the cross-shaped blind hole cavity is small, the violent swing of the chain in the hammer body can be effectively limited, and a small swing in the first slot hole 2 and the second slot hole 1 of the cross-shaped blind hole cavity can be achieved, thereby effectively reducing the wear between the chain and the hammer body.

[0031] The pin is located in the pin hole 3, passes through the fixing hole along the pin hole 3, and is fixedly connected to the truncated cone body 4. Specifically, the fixing hole can be an iron ring welded at the end of the chain, and the diameter of the pin is less than the diameter of the iron ring and less than the cross-shaped blind hole-shaped cavity; the fixing hole can also be a hole on the chain that can just pass the pin.

[0032] Preferably, the diameter of the chain < the diameter of the cross-shaped blind hole cavity ≤ 1.2 times the diameter of the chain. Figure 3 The diameter of the cross-shaped blind hole formed by the first slot 2 and the second slot 1 is slightly larger than the diameter of the chain. Specifically, the chain is placed from the cross-shaped blind hole slightly larger than the diameter of the chain, that is, the chain is extended downward along the first slot 2 and placed into the cross-shaped blind hole, and the connection structure fixedly connected to the hammer body by the pin shaft replaces the ring connection structure set on the upper part of the hammer body used in the prior art, which can effectively limit the swing between the hammer body and the chain of the blast furnace probe weight, thereby reducing the wear between the components and extending the service life of the blast furnace probe weight.

[0033] Preferably, the fixed connection is by welding. Figure 2 When the chain is put into the cross-shaped blind hole formed by the first slot 2 and the second slot 1 until the chain insertion end contacts the bottom inner wall of the pin hole 3, the pin shaft (not shown) is inserted from the pin hole 3 and passes through the pore (fixing hole) of the chain at the same height as the pin hole 3 to connect the chain and the hammer body together, and then the pin shaft is welded to the truncated cone body 4 of the hammer body to achieve a fixed connection between the truncated cone body 4 and the chain. The connection method using the pin shaft fixation replaces the connection method using the shackle connection in the prior art, which solves the problem of the short service life of the shackle under high temperature conditions, and also solves the problem that the shackle pin shaft is relatively small and not wear-resistant, enhances the reliability and stability of the connection, and further improves the service life of the heavy hammer for the blast furnace probe.

[0034] Preferably, a cylindrical body 5 is provided at the lower part of the hammer body; the ratio of the axial length of the truncated cone body 4 to the axial length of the cylindrical body 5 is 1:2. Figure 1 The upper truncated cone body 4 of the hammer body is tightly connected to the lower cylindrical body 5 of the hammer body, and the bottom surface of the truncated cone body 4 is the top surface of the cylindrical body 5. In an optional embodiment, the hammer body is an integrated structural member with a truncated cone shape in the upper half and a cylindrical shape in the lower half, and a chamfered bottom end.

[0035] Preferably, the bottom end of the cylinder 5 is also provided with a chamfer 6; the angle of the chamfer 6 is 40 to 75 degrees. Specifically, the cylinder 5 is cut and processed into an inclined surface with an angle of 40 to 75 degrees at a position near the bottom surface 1 / 4 to form the chamfer 6. The chamfer 6 can prevent the heavy hammer for the blast furnace probe from collapsing during the up and down movement, and can also effectively avoid the jamming fault caused by the three-claw structure set at the bottom end of the cylinder 5 during the movement, so as to achieve the non-collapse and smooth movement of the heavy hammer for the blast furnace probe during the movement.

[0036] Preferably, the material of the heavy hammer for the blast furnace probe is cast steel, forged steel or cast iron.

[0037] In summary, the above technical solutions of the present invention are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heavy hammer for a blast furnace probe, characterized in that: Including hammer, chain and pin; A truncated cone body is provided at the upper part of the hammer body, and a cross-shaped blind hole cavity is concave downwardly provided on the upper end surface of the truncated cone body, and the cross-shaped blind hole cavity includes a first slot hole and a second slot hole; the first slot hole and the second slot hole are arranged in a cross shape, and the hole depth of the first slot hole is greater than the hole depth of the second slot hole; The truncated cone body is provided with a pin hole directly below the second slot hole, the pin hole passes through the truncated cone body and is arranged crosswise with the first slot hole; The chain extends downward along the first slot; a fixing hole is provided on the chain, and the fixing hole and the pin hole are at the same height; The pin shaft is located in the pin hole, passes through the fixing hole along the pin hole, and is fixedly connected to the frustum body.

2. The heavy hammer for blast furnace probe according to claim 1, characterized in that: The diameter of the chain is less than the diameter of the cross-shaped blind hole cavity and is less than or equal to 1.2 times the diameter of the chain.

3. The heavy hammer for blast furnace probe according to claim 1, characterized in that: The fixed connection is by welding.

4. The heavy hammer for blast furnace probe according to claim 1, characterized in that: A cylinder is provided at the lower part of the hammer body; the ratio of the axial length of the truncated cone body to the axial length of the cylinder is 1:

2.

5. The heavy hammer for blast furnace probe according to claim 4, characterized in that: The bottom end of the cylinder is also provided with a chamfered portion; the angle of the chamfered portion is 40 to 75 degrees.

6. The heavy hammer for blast furnace probe according to claim 1, characterized in that: The material of the heavy hammer for the blast furnace probe is cast steel, forged steel or cast iron.

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