Steel casting hardness detection equipment

Abstract

The invention discloses steel casting hardness detection equipment, and relates to the technical field of hardness impact detection. When an adjustable clamping block clamps a steel casting, one end, close to the steel casting, of the adjustable clamping block tilts upwards under the contact pressure with the steel casting, and after the steel casting is clamped, an obliquely upward supporting force is provided for the steel casting; the problems that the bottom of the steel casting tilts, gaps exist in the bottom of the steel casting during impact, two faces of the steel casting are impacted at the same time under impact detection, and detection data are abnormal are solved, the position, close to one end of the steel casting, of a clamping block is limited through a pressing strip, the clamping block is close to one end of the steel casting, and when the steel casting is clamped, the clamping block is prevented from being damaged in the clamping process. When the steel casting is clamped by the special-shaped and adjustable clamping blocks on the two sides of the steel casting, one end, close to the steel casting, of the steel casting tilts upwards under the contact pressure with the steel casting, so that the situation that a gap exists at the bottom of the steel casting when the steel casting is impacted, the two surfaces of the steel casting are impacted at the same time under impact detection, and detection data are abnormal is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hardness impact detection, in particular to a steel casting hardness detection device. Background Art

[0002] At present, metal hardness impact testing is one of the important methods for evaluating the performance of metal materials. Hardness testing is usually used to measure the ability of metals to resist local deformation, especially plastic deformation, indentation or scratches. Impact testing mainly evaluates the ability of metal materials to absorb energy and resist fracture under impact loads. Impact tests are usually carried out using impact testing machines. By letting the hammer impact the standard sample and measuring the energy absorbed when the sample breaks, the toughness and brittleness of the metal material can be judged. In the process of fixing the steel casting, since the outer side of the steel casting may be an arc surface, the clamping piece is designed to be adjustable during the clamping process. However, during the adjustment process, when the adjustable clamping block clamps the steel casting, the end close to the steel casting is tilted upward under the contact pressure with the steel casting. After clamping the steel casting, an oblique upward support force is provided to the steel casting to prevent the bottom of the steel casting from tilting, so that there is a gap at the bottom of the steel casting during impact. Under impact detection, both sides are impacted at the same time, causing abnormal detection data. Summary of the invention

[0003] To achieve the above purpose, the present invention is implemented by the following technical scheme: a steel casting hardness detection device, comprising: A base, which is used to support and connect the structural components, and a square groove is opened at the center of the top of the base; A fixing mechanism, which is used to fix and support the steel casting, and the fixing mechanism is installed in the square groove of the base, and a cylinder is installed on the outside of the fixing mechanism; An impact mechanism, which is used to impact the steel casting and provide protection during the impact, and the impact mechanism is installed on the top of the base, and an impact cylinder is fixedly installed on the top of the impact mechanism; In which, the fixing mechanism includes a support seat, the support seat is fixedly installed in the square groove of the base, and a vertical plate is fixedly installed on the top of the support seat, the vertical plate is symmetrically installed along the axial center position of the axis of the support seat, and the non-opposite surfaces of the vertical plate are fixedly connected to the outer side of the cylinder, the output end of the cylinder passes through the vertical plate and extends to the other side thereof, the output end of the cylinder is fixedly installed with a slot plate, and the center positions of the opposite surfaces of the slot plate are fixedly installed with slot blocks, a connecting rod is rotatably installed on the inner wall of the slot block, a clamping block is slidably installed on the outer side of the connecting rod, the opposite surface of the clamping block is an inclined surface and the bottom end of the inclined surface is close to the connecting rod, and the clamping blocks are evenly arranged on the outer side of the connecting rod, and a rubber pad is fixedly installed on one end of the clamping block close to the slot block, and through the deformation characteristics of the rubber material of the rubber pad, the clamping block can apply different pressures according to the shape and curvature of the outer side of the steel casting after contacting the two side surfaces of the steel casting. The rubber pad is transmitted to the rubber pad, causing the rubber pad to deform to different degrees, changing the position of the clamping block on the outside of the connecting rod, so that the clamping block can better fit the two side surfaces of the steel casting, ensuring the clamping effect of the steel casting. The rubber pad is fixedly connected to the groove block at one end away from the clamping block, and a pressure strip is fixedly installed on the top of the groove block, and the bottom of the pressure strip fits the top of the clamping block. The position of the clamping block close to one end of the steel casting is limited by the pressure strip, so that the clamping block is close to one end of the steel casting. When clamping the steel casting, it is avoided that during the clamping process, due to the special shape of the two sides of the steel casting, the end of the adjustable clamping block close to the steel casting is tilted upward under the contact pressure with the steel casting. After clamping the steel casting, an oblique upward supporting force is provided for the steel casting to avoid the bottom of the steel casting from tilting, so that there is a gap at the bottom of the steel casting during impact. Under impact detection, both sides are impacted at the same time, causing abnormal detection data.

[0004] Preferably, pads are fixedly installed on the bottoms of the opposite surfaces of the slot blocks, and the pads are installed in a staggered manner. A bottom block is fixedly installed at the center position of the top of the support seat. Through the cooperation between the bottom block and the pad, the bottom block and the pad whose tops are in the same horizontal plane are used to provide supporting force for the bottom of the steel casting. At the same time, when the steel casting is placed, the impact detection position is better located through the position of the bottom block, making positioning more convenient, and the top of the bottom block and the top of the pad are in the same horizontal plane, and support beams are installed on both sides of the vertical plates, and the vertical plates are fixedly connected by the support beams, and beam grooves are opened on both sides of the slot plate, and the beam grooves of the slot plate are slidably adapted to the outer sides of the support beams.

[0005] Preferably, the impact mechanism includes a support frame, the support frame is fixedly mounted on the top of the base, the impact cylinder is fixedly mounted at the center position of the top of the support frame, and the output end of the impact cylinder passes through the support frame and extends to the bottom thereof, and a positioning cylinder is fixedly mounted at the center position of the bottom of the support frame, and the sliding position of the sliding column is limited by the positioning cylinder, so that when the sliding column impacts, the sliding path of the sliding column can be restricted during the downward movement, and the sliding column can be avoided from being deviated. At the same time, when impacting, the positioning cylinder provides supporting force for the sliding column, so as to avoid the top of the cast steel part being an arc surface, and the impact of the impact hammer causing a lateral reaction force to occur, causing the sliding column and the driving part to be offset. The connection between them is broken, a sliding column is slidably installed on the inner wall of the positioning cylinder, the top of the sliding column is fixedly connected to the output end of the impact cylinder, and an impact hammer is fixedly installed on the bottom of the sliding column, and the impact hammer is located directly above the bottom block, a connecting column is fixedly installed on the inner wall of the support frame, the connecting column is symmetrically installed along the center position of the axis of the support frame, and a connecting plate is fixedly installed on the bottom of the opposite surface of the connecting column, and a slide plate is fixedly installed on the top of the connecting plate, the opposite surfaces of the slide plates are symmetrically provided with slide grooves, and a protective component is slidably installed at the slide groove of the slide groove plate, and the protective component is located between the slide groove plates.

[0006] Preferably, the protection component includes a slide, both ends of the slide are slidably installed in the slide groove of the slide groove plate, and the top of the slide is symmetrically provided with plate grooves, and fixed plates are slidably installed in the plate grooves of the slide, and both ends of the top of the fixed plate are installed with limiting plates, and the position of the fixed plate is limited by the limiting plates, so that the fixed plate can only slide upward in the slide and cannot move downward. When contacting cast steel parts of different thicknesses, the reaction force generated by the contact between the anti-slip plate and the top of the cast steel part compresses the spring, so that the slide rod slides upward in the slide tube, so that the position of the fixed plate can be adjusted to better adapt to cast steel parts of different thicknesses. The bottom of the limiting plate is fitted with the top of the slide, and a protective plate is fixedly installed at the center position of the bottom of the fixed plate, the bottom of the protective plate is made of rubber material, a sliding rod is fixedly installed at the center position of the top of the fixed plate, a fixing ring is provided at the bottom of the outer side of the sliding rod, and a sliding cylinder is slidably installed on the outer side of the sliding rod, a spring is fixedly installed between the sliding cylinder and the fixing ring, and a connecting frame is fixedly installed on the top of the sliding cylinder, a connecting ring is fixedly installed on the top of the connecting frame, the inner wall of the connecting ring is fixedly installed on the outer side of the sliding column, and the top of the connecting ring is fitted with the bottom of the positioning cylinder.

[0007] The present invention provides a steel casting hardness testing device, which has the following beneficial effects: 1. The steel casting hardness testing equipment limits the position of the clamping block close to one end of the steel casting through a pressure strip, so that the clamping block is close to one end of the steel casting. When clamping the steel casting, it is prevented that during the clamping process, due to the special shapes on both sides of the steel casting, the end of the adjustable clamping block close to the steel casting is tilted upward under the contact pressure with the steel casting. After clamping the steel casting, an oblique upward supporting force is provided for the steel casting to prevent the bottom of the steel casting from tilting, so that there is a gap at the bottom of the steel casting when impacting. Under impact testing, both sides are impacted at the same time, causing abnormal test data.

[0008] 2. The steel casting hardness testing equipment uses the deformation characteristics of the rubber material of the rubber pad to enable the clamping block to transfer different pressures to the rubber pad according to the shape and curvature of the outer side of the steel casting after contacting the two side surfaces of the steel casting, so that the rubber pad undergoes different degrees of deformation, and the position of the clamping block on the outer side of the connecting rod is changed, so that the clamping block can better fit the two side surfaces of the steel casting, thereby ensuring the clamping effect of the steel casting.

[0009] 3. The hardness testing equipment for steel castings provides support for the bottom of steel castings through the cooperation between the bottom block and the pad, using the bottom block and the pad whose tops are on the same horizontal plane. At the same time, when the steel castings are placed, the impact testing position is better located through the position of the bottom block, making the positioning more convenient.

[0010] Fourth, the hardness testing equipment for steel castings limits the sliding position of the sliding column through the positioning cylinder, so that when the sliding column is impacted, the sliding route of the sliding column can be limited during the downward movement to avoid the sliding column from deflecting. At the same time, when impacting, the positioning cylinder is used to provide support for the sliding column to avoid the arc surface on the top of the steel casting, and the impact of the impact hammer will not cause a lateral reaction force to break the connection between the sliding column and the driving part.

[0011] 5. The steel casting hardness testing equipment limits the position of the fixed plate by a limiting plate, so that the fixed plate can only slide upward in the slide frame and cannot move downward. When contacting steel castings of different thicknesses, the reaction force generated by the contact between the anti-slip plate and the top of the steel casting compresses the spring, causing the slide bar to slide upward in the slide tube, so that the position of the fixed plate can be adjusted to better adapt to steel castings of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the external structure of a steel casting hardness testing device according to the present invention; Figure 2 It is a partial structural schematic diagram of a steel casting hardness testing device of the present invention; Figure 3 It is a schematic diagram of the fixing mechanism structure of the present invention; Figure 4 It is a partial structural schematic diagram of the fixing mechanism of the present invention; Figure 5 It is a side view of the partial structure of the fixing mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the impact mechanism of the present invention; Figure 7 It is a partial structural schematic diagram of the impact mechanism of the present invention; Figure 8 It is a schematic diagram of the structure of the protection component of the present invention.

[0013] In the figure: 1. base; 2. fixing mechanism; 3. impact mechanism; 4. impact cylinder; 5. cylinder; 201. support seat; 202. support beam; 203. vertical plate; 204. bottom block; 205. groove plate; 206. pad; 207. groove block; 208. connecting rod; 209. rubber pad; 210. pressure strip; 211. clamping block; 31. support frame; 32. connecting column; 33. positioning cylinder; 34. connecting plate; 35. slide plate; 36. protection component; 37. slide column; 38. impact hammer; 361. connecting ring; 362. connecting frame; 363. slide cylinder; 364. slide rod; 365. protection plate; 366. fixing plate; 367. limiting plate; 368. slide frame; 369. spring. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0015] The first embodiment, as Figures 1 to 5 As shown, the present invention provides a technical solution: a steel casting hardness detection device, comprising: A base 1, which is used to support and connect the structural components, and a square groove is opened at the center of the top of the base 1; A fixing mechanism 2, which is used to fix and support the steel casting, and the fixing mechanism 2 is installed in the square groove of the base 1, and a cylinder 5 is installed on the outside of the fixing mechanism 2; An impact mechanism 3, which is used to impact the steel casting and protect it during the impact, and the impact mechanism 3 is installed on the top of the base 1, and an impact cylinder 4 is fixedly installed on the top of the impact mechanism 3; The fixing mechanism 2 includes a support seat 201, which is fixedly installed in the square groove of the base 1, and a vertical plate 203 is fixedly installed on the top of the support seat 201. The vertical plate 203 is symmetrically installed along the axis of the support seat 201, and the non-opposite surfaces of the vertical plate 203 are fixedly connected to the outer side of the cylinder 5. The output end of the cylinder 5 passes through the vertical plate 203 and extends to the other side thereof. The output end of the cylinder 5 is fixedly installed with a slot plate 205. First, the worker places the steel casting on the top of the bottom block 204 so that the impact position is in the same position as the center of the bottom block 204. In the vertical direction, the cylinder 5 is used to drive the groove plate 205 to move inward on both sides. The center positions of the opposite surfaces of the groove plate 205 are fixedly installed with groove blocks 207. The inner wall of the groove block 207 is rotatably installed with a connecting rod 208. The outer side of the connecting rod 208 is slidably installed with a clamping block 211. The opposite surface of the clamping block 211 is an inclined surface, and the bottom end of the inclined surface is close to the connecting rod 208. The clamping blocks 211 are evenly arranged on the outer side of the connecting rod 208. A rubber pad 209 is fixedly installed on one end of the clamping block 211 close to the groove block 207. The rubber pad 209 is away from the clamping block 211. One end is fixedly connected to the groove block 207. When the groove block 207 approaches inward, the clamping block 211 is driven inward to clamp the steel casting through the rubber pad 209 and the connecting rod 208. During the clamping process, the steel casting is contacted through the inclined surface opposite to the clamping block 211. Since the upper side of the inclined surface of the clamping block 211 first contacts the steel casting, after the contact, the clamping pressure is transmitted to the rubber pad 209 through the clamping block 211, causing the rubber pad 209 to deform. The clamping block 211 slides on the outside of the connecting rod 208, and the position of the rubber pad 209 is adjusted to be evenly installed on the connecting rod. The clamping block 211 on the outside of the rod 208 undergoes different deformations according to the shape of the steel casting, so that the clamping block 211 can better contact the steel casting. At the same time, during the clamping process, the position of the clamping block 211 is limited at the top by the pressure strip 210, so that after the rubber pad 209 is deformed and pressurized, the clamping block 211 can only rotate slightly downward through the end of the clamping block 211 close to the steel casting, and cannot provide an oblique upward clamping force for the steel casting after the rubber pad 209 is deformed. A pressure strip 210 is fixedly installed on the top of the groove block 207, and the bottom of the pressure strip 210 fits with the top of the clamping block 211.

[0016] Pads 206 are fixedly installed at the bottom of the opposite surfaces of the slot blocks 207, and the pads 206 are installed in a staggered manner. A bottom block 204 is fixedly installed at the center position of the top of the support seat 201, and the top of the bottom block 204 is at the same horizontal plane as the top of the pad 206. Support beams 202 are installed on both sides of the vertical plates 203, and the vertical plates 203 are fixedly connected by the support beams 202. Beam grooves are opened on both sides of the slot plate 205. During the movement, the slot plate 205 and the support beam 202 are slidably adapted to make the support beam 202 cooperate with the slot plate 205 to provide supporting force for the slot plate 205. At the same time, when the slot plate 205 moves inward, the slot blocks 207 installed on the opposite surfaces drive the pads 206 to move inward. During the movement, the staggered pads 206 move inward in a staggered manner during the movement. The bottom is supported by a cast steel part, and the beam groove of the slot plate 205 is slidably adapted to the outer side of the support beam 202.

[0017] The second embodiment is based on the first embodiment. Figure 6 to Figure 7 As shown, the impact mechanism 3 includes a support frame 31, the support frame 31 is fixedly installed on the top of the base 1, the impact cylinder 4 is fixedly installed at the center position of the top of the support frame 31, and the output end of the impact cylinder 4 passes through the support frame 31 and extends to the bottom thereof, a positioning cylinder 33 is fixedly installed at the center position of the bottom of the support frame 31, a sliding column 37 is slidably installed on the inner wall of the positioning cylinder 33, the top of the sliding column 37 is fixedly connected to the output end of the impact cylinder 4, and an impact hammer 38 is fixedly installed at the bottom of the sliding column 37, and the impact hammer 38 is located just above the bottom block 204, a connecting column 32 is fixedly installed on the inner wall of the support frame 31, the connecting column 32 is symmetrically installed along the center position of the axis of the support frame 31, and a connecting column 32 is fixedly installed at the bottom of the opposite surface of the connecting column 32 The connecting plate 34 has a slide plate 35 fixedly installed on the top thereof, and slide grooves are symmetrically provided on the opposite surfaces of the slide plate 35. The slide column 37 is driven to impact downward by the impact cylinder 4. At the same time, when the slide column 37 impacts downward, the position of the slide column 37 is limited by the positioning cylinder 33, so that the slide column 37 can only slide on the inner wall of the positioning cylinder 33. At the same time, in the process of the slide column 37 impacting downward, the impact hammer 38 and the protective component 36 are driven to move downward together, and the impact hammer 38 impacts the cast steel part to complete the hardness test. The protective component 36 cooperates with the impact hammer 38 to block the flying debris during the impact process, and the protective component 36 is slidably installed at the slide groove of the slide plate 35, and the protective component 36 is located between the slide plates 35.

[0018] The third embodiment is based on the first and second embodiments. Figure 8As shown, the protective assembly 36 includes a slide 368, both ends of the slide 368 are slidably installed in the slide groove of the slide plate 35, and the top of the slide 368 is symmetrically provided with plate grooves, and fixed plates 366 are slidably installed in the plate grooves of the slide 368, both ends of the top of the fixed plate 366 are installed with limiting plates 367, the bottom of the limiting plate 367 is in contact with the top of the slide 368, and a protective plate 365 is fixedly installed at the center position of the bottom of the fixed plate 366, the bottom of the protective plate 365 is made of rubber material, the slide column 37 drives the connecting ring 361 to move downward, so that the connecting ring 361 drives the slide cylinder 363 to move downward through the connecting frame 362, the slide cylinder 363 is connected to the fixing ring of the slide rod 364 through the spring 369, so as to form pressure on the fixing plate 366, and the pressure of the fixing plate 366 drives the slide 368 to slide downward in the slide groove of the slide plate 35 through the limiting plate 367, and the slide rod 364 is fixedly installed at the center position of the top of the fixing plate 366.

[0019] A fixing ring is provided at the bottom of the outer side of the slide rod 364, and a slide cylinder 363 is slidably installed on the outer side of the slide rod 364, a spring 369 is fixedly installed between the slide cylinder 363 and the fixing ring, and a connecting frame 362 is fixedly installed on the top of the slide cylinder 363, and a connecting ring 361 is fixedly installed on the top of the connecting frame 362. Before impact, the bottom end of the protective plate 365 contacts the top of the cast steel part, and blocks both sides of the impact position during impact, and cooperates with the vertical plate 203 to form protection around the impact position. The inner wall of the connecting ring 361 is fixedly installed on the outer side of the slide column 37, and the top of the connecting ring 361 fits with the bottom of the positioning cylinder 33.

[0020] When in use, the tester puts the steel casting into the fixing mechanism 2, drives the fixing mechanism 2 to operate by starting the cylinder 5, clamps and fixes the steel casting by the fixing mechanism 2, and after the steel casting is fixed, starts the impact cylinder 4 according to the impact force required for the test, so that the impact cylinder 4 drives the impact mechanism 3, and the impact mechanism 3 impacts the top surface of the steel casting fixed in the fixing mechanism 2 to complete the hardness test.

[0021] When fixing the steel casting by the fixing mechanism 2, the worker first places the steel casting on the top of the bottom block 204 so that the impact position and the center position of the bottom block 204 are in the same vertical direction, and the cylinder 5 is used to drive the slot plate 205 to move inward on both sides. During the movement, the slot plate 205 and the support beam 202 are slidably adapted to make the support beam 202 cooperate with the slot plate 205 to provide supporting force for the slot plate 205. At the same time, when the slot plate 205 moves inward, the pad 206 is driven to move inward by the slot block 207 installed on the opposite surface. During the movement, the pad 206 installed in an offset manner moves inward in an offset manner to support the steel casting at the bottom.

[0022] As the groove block 207 approaches inward, the clamping block 211 is driven inward by the rubber pad 209 and the connecting rod 208 to clamp the steel casting. During the clamping process, the clamping block 211 contacts the steel casting through the opposite inclined surface. Since the upper portion of the inclined surface of the clamping block 211 contacts the steel casting first, after the contact, the clamping pressure is transmitted to the rubber pad 209 through the clamping block 211, causing the rubber pad 209 to deform. The clamping block 211 slides on the outer side of the connecting rod 208 to adjust the rubber pad. The position of the connecting rod 209 is adjusted, and the clamping block 211 evenly installed on the outside of the connecting rod 208 is deformed differently according to the shape of the steel casting, so that the clamping block 211 can better contact the steel casting. At the same time, during the clamping process, the position of the clamping block 211 is limited at the top by the pressure strip 210, so that after the rubber pad 209 is deformed and pressurized, the clamping block 211 can only rotate slightly downward through the end of the clamping block 211 close to the steel casting, and cannot provide an oblique upward clamping force for the steel casting after the rubber pad 209 is deformed.

[0023] After the steel casting is fixed, the sliding column 37 is driven to impact downward by the impact cylinder 4. At the same time, when the sliding column 37 impacts downward, the position of the sliding column 37 is limited by the positioning cylinder 33, so that the sliding column 37 can only slide on the inner wall of the positioning cylinder 33. At the same time, in the process of the sliding column 37 impacting downward, the impact hammer 38 and the protective component 36 are driven to move downward together. The steel casting is impacted by the impact hammer 38 to complete the hardness test. The protective component 36 cooperates with the impact hammer 38 to block the flying debris during the impact process.

[0024] When the impact hammer 38 impacts downward, the slide column 37 drives the connecting ring 361 to move downward, so that the connecting ring 361 drives the slide tube 363 to move downward through the connecting frame 362, and the slide tube 363 is connected to the fixing ring of the slide rod 364 through the spring 369, so as to form pressure on the fixing plate 366. The pressure of the fixing plate 366 is driven by the limiting plate 367 to drive the slide 368 to slide downward in the slide groove of the slide groove plate 35. Before the impact, the bottom end of the protective plate 365 contacts the top of the cast steel part, and blocks the two sides of the impact position during the impact, and cooperates with the vertical plate 203 to form protection around the impact position.

[0025] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A steel casting hardness testing device, characterized in that: include: A base (1), the base (1) being used to support and connect structural components, and a square groove is provided at the center of the top of the base (1); A fixing mechanism (2), the fixing mechanism (2) being used to fix and support the steel casting, and the fixing mechanism (2) being installed in a square groove of the base (1), and a cylinder (5) being installed on the outside of the fixing mechanism (2); An impact mechanism (3), the impact mechanism (3) being used to impact the steel casting and provide protection during the impact, and the impact mechanism (3) being mounted on the top of the base (1), and an impact cylinder (4) being fixedly mounted on the top of the impact mechanism (3); The fixing mechanism (2) comprises a support seat (201), the support seat (201) is fixedly mounted in a square groove of the base (1), and a vertical plate (203) is fixedly mounted on the top of the support seat (201), the vertical plate (203) is symmetrically mounted along the axis center position of the support seat (201), and non-opposite surfaces of the vertical plate (203) are fixedly connected to the outer side of the cylinder (5), the output end of the cylinder (5) passes through the vertical plate (203) and extends to the other side thereof, the output end of the cylinder (5) is fixedly mounted with a slot plate (205), and the center position of the opposite surface of the slot plate (205) is fixedly mounted with a slot block (207), and the slot block (207) A connecting rod (208) is rotatably mounted on the inner wall, a clamping block (211) is slidably mounted on the outer side of the connecting rod (208), an opposite surface of the clamping block (211) is an inclined surface and the bottom end of the inclined surface is close to the connecting rod (208), and the clamping blocks (211) are evenly arranged on the outer side of the connecting rod (208), a rubber pad (209) is fixedly mounted on one end of the clamping block (211) close to the groove block (207), and an end of the rubber pad (209) away from the clamping block (211) is fixedly connected to the groove block (207), and a pressure strip (210) is fixedly mounted on the top of the groove block (207), and the bottom of the pressure strip (210) is in contact with the top of the clamping block (211).

2. A steel casting hardness testing device according to claim 1, characterized in that: Pads (206) are fixedly mounted on the bottoms of the opposite surfaces of the slot blocks (207), the pads (206) are staggered, a bottom block (204) is fixedly mounted at the center of the top of the support seat (201), and the top of the bottom block (204) and the top of the pads (206) are on the same horizontal plane.

3. The steel casting hardness testing device according to claim 1, characterized in that: Support beams (202) are installed on both sides of the vertical plates (203), the vertical plates (203) are fixedly connected via the support beams (202), beam grooves are opened on both sides of the slot plates (205), and the beam grooves of the slot plates (205) are slidably matched with the outer sides of the support beams (202).

4. The steel casting hardness testing device according to claim 1, characterized in that: The impact mechanism (3) comprises a support frame (31), the support frame (31) being fixedly mounted on the top of the base (1), the impact cylinder (4) being fixedly mounted at the center position of the top of the support frame (31), and the output end of the impact cylinder (4) passing through the support frame (31) and extending to the bottom thereof.

5. The steel casting hardness testing device according to claim 4, characterized in that: A positioning cylinder (33) is fixedly mounted at the center of the bottom of the support frame (31), a sliding column (37) is slidably mounted on the inner wall of the positioning cylinder (33), the top of the sliding column (37) is fixedly connected to the output end of the impact cylinder (4), and an impact hammer (38) is fixedly mounted at the bottom of the sliding column (37), and the impact hammer (38) is located directly above the bottom block (204).

6. A steel casting hardness testing device according to claim 5, characterized in that: A connecting column (32) is fixedly mounted on the inner wall of the support frame (31), the connecting column (32) is symmetrically mounted along the center position of the axis of the support frame (31), and a connecting plate (34) is fixedly mounted on the bottom of the opposite surface of the connecting column (32), and a slide plate (35) is fixedly mounted on the top of the connecting plate (34), and slide grooves are symmetrically opened on the opposite surfaces of the slide plate (35), and a protective component (36) is slidably mounted at the slide groove of the slide plate (35), and the protective component (36) is located between the slide plates (35).

7. A steel casting hardness testing device according to claim 6, characterized in that: The protection component (36) comprises a slide frame (368), both ends of the slide frame (368) are slidably mounted at the slide grooves of the slide groove plate (35), the top of the slide frame (368) is symmetrically provided with plate grooves, and fixing plates (366) are slidably mounted at the plate grooves of the slide frame (368), and both ends of the top of the fixing plate (366) are mounted with limiting plates (367).

8. A steel casting hardness testing device according to claim 7, characterized in that: The bottom of the limiting plate (367) fits with the top of the slide (368), and a protective plate (365) is fixedly installed at the center position of the bottom of the fixing plate (366), the bottom of the protective plate (365) is made of rubber material, and a sliding rod (364) is fixedly installed at the center position of the top of the fixing plate (366).

9. A steel casting hardness testing device according to claim 8, characterized in that: A fixing ring is provided at the bottom of the outer side of the slide rod (364), and a slide cylinder (363) is slidably mounted on the outer side of the slide rod (364), a spring (369) is fixedly mounted between the slide cylinder (363) and the fixing ring, and a connecting frame (362) is fixedly mounted on the top of the slide cylinder (363).

10. A steel casting hardness testing device according to claim 9, characterized in that: A connecting ring (361) is fixedly mounted on the top of the connecting frame (362), the inner wall of the connecting ring (361) is fixedly mounted on the outer side of the sliding column (37), and the top of the connecting ring (361) is in contact with the bottom of the positioning cylinder (33).

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