Multifunctional operation table for fire assaying

Abstract

The invention relates to the technical field of fire assaying, and provides a multifunctional operating table for fire assaying, which comprises an operating table main body, and a first cast iron mold and a second cast iron mold are stacked on the operating table main body; the inner side face of the operation table body is provided with a guide support used for supporting the first cast iron mold and the second cast iron mold on the operation table body and a shaft outer sleeve piece used for clamping the first cast iron mold and the second cast iron mold under the guide of the guide support. By arranging the first cast iron mold and the second cast iron mold which can be replaced for use, the first cast iron mold and the second cast iron mold are buckled together, and when the first cast iron mold and the second cast iron mold are pushed, a combined shaft of the two right half shafts can be guided to the shaft outer sleeve piece under rolling of the balls; and compared with the prior art, the shaft outer sleeve piece can conveniently limit the combined shaft of the two right half shafts, so that the first cast iron mold and the second cast iron mold are driven to turn over through the motor, and compared with the prior art, the work intensity of operators can be relieved through the shaft outer sleeve piece.

Description

Technical Field

[0001] The invention relates to the technical field of fire assaying, and in particular to a multifunctional operating table for fire assaying. Background Art

[0002] In precious metal analysis, fire assay is often used to determine gold and silver. However, in the fire assay, the molten sample in the crucible needs to be poured into the cast iron mold, and the lead buckle needs to be smashed after the molten sample cools down to take out the lead buckle. When placing the cast iron mold, the operator is often required to move the cast iron mold from the hot plate to the operating table. In the process of taking out the lead buckle, the operator is often required to turn the cast iron mold over. The cast iron mold is heavy, which will increase the operator's work intensity during the flipping process; and in order to ensure the next use, each slag needs to be knocked to take out the lead buckle, which is cumbersome to operate; and the crucibles for fire assay are mostly enriched with lead, which will produce lead smoke during the melting process. If the operator operates on site, it will also endanger the operator's health. Therefore, it is very necessary to invent a multifunctional fire assay operation function table. Summary of the invention

[0003] The invention provides a multifunctional operating table for fire assaying, which solves the problems in the prior art that the operation of turning over the cast iron mold is complicated and the lead smoke is generated, which is harmful to the health of operators.

[0004] The technical solution of the present invention is as follows: a multifunctional operating table for fire assaying, comprising an operating table body, on which a first cast iron mold and a second cast iron mold are stacked, the inner side surface of the operating table body is provided with a guide bracket for supporting the first cast iron mold and the second cast iron mold on the operating table body, and an outer shaft set for clamping the first cast iron mold and the second cast iron mold under the guidance of the guide bracket, the outer side surface of the operating table body is fixed with a motor for turning the first cast iron mold and the second cast iron mold up and down through the outer shaft set, and the operating table body A cylinder is fixed on the top, a mounting frame which moves vertically under the drive of the cylinder is arranged above the second cast iron mold, an electric telescopic rod is fixed to one end of the mounting frame, a moving frame which slides horizontally reciprocatingly under the drive of the electric telescopic rod is arranged on the inner side of the mounting frame, a rack is fixed to the outer side of the mounting frame, a plurality of knocking components which cooperate with the rack to repeatedly knock the flipped first cast iron mold in the process of sliding of the moving frame are arranged on the inner side of the moving frame, and a crucible rack for placing the crucible is arranged on the inner side of the operating table body.

[0005] Preferably, the first cast iron mold and the second cast iron mold both include a mold body, a plurality of mold cavities are provided on the mold body, a left half-shaft is fixed to one end of the mold body, and a right half-shaft is fixed to the other end of the mold body, and when the first cast iron mold and the second cast iron mold are merged up and down, the two left half-shafts and the two right half-shafts can be spliced ​​into axially overlapping axes, and limiting grooves are provided on both sides of the merged axis of the two right half-shafts.

[0006] Preferably, the guide bracket includes a frame rod, which is fixed on the operating table body, and a U-shaped seat is fixed on the top of the frame rod. The U-shaped seat is provided with an arc groove that is compatible with the merging axis of the two right half-axes, and a plurality of balls distributed at equal angles along the axis are embedded in the arc groove.

[0007] Preferably, the off-axis kit includes a ring, which coincides with the axis of the U-shaped seat arc groove, one end of the ring is rotatably connected to the operating table body and fixed to the output end of the motor, and the other end of the ring is provided with a accommodating hole that can accommodate two right half-shaft combined shafts, and both sides of the accommodating hole are provided with limiting protrusions that are compatible with the upper limit grooves of the two right half-shaft combined shafts.

[0008] Preferably, the mounting frame includes a fixed seat, which is fixed to the output end of the cylinder, and a guide rod is fixed to the top surface of the fixed seat and is vertically slidably connected to the operating table body, and an outer frame is fixed to the bottom of the fixed seat and is horizontally arranged along the length direction of the first cast iron mold and the second cast iron mold, and sliding grooves are provided on both sides of the outer frame and are slidably connected to the movable frame.

[0009] Preferably, the striking assembly includes a roller, which is rotatably connected to the moving frame, both ends of the roller pass through the outside of the moving frame and are fixed with gears meshing with the rack, a disc is fixed to the middle position of the roller, a plurality of positioning shafts distributed in a ring around the roller and a second spring shaft alternately arranged with the positioning shaft are fixed on the surface of the disc, a fixing rod is hinged outside the positioning shaft, a hammer ball is fixed to the end of the fixing rod away from the positioning shaft, a notch is opened on the fixing rod, a first spring shaft is fixed in the notch, and the first spring shaft and the second spring shaft are elastically connected by a tension spring.

[0010] Preferably, the crucible stand comprises a frame plate, which is slidably inserted into the operating table body, and is provided with a plurality of placement holes for placing the crucibles, and the placement holes are arranged corresponding to the mold cavity, and a handle is fixed at one end of the frame plate.

[0011] Preferably, a groove for accommodating the two left half-shaft merging shafts is provided on the top of the side of the operating table body away from the off-shaft sleeve.

[0012] Preferably, the top of the mold body is provided with a plurality of groups of auxiliary components corresponding to the knocking components.

[0013] Preferably, the auxiliary motion component includes two symmetrically arranged hinge seats, the tops of the two hinge seats are hinged with swing arms through pins, the tops of the two swing arms are fixed with gravity balls, the sides of the two swing arms are fixed with spring rods, and the spring rods on the two swing arms are elastically connected by hook springs.

[0014] The beneficial effects of the present invention are: The present invention provides a first cast iron mold and a second cast iron mold that are interchangeable and have the same structure, and by buckling the first cast iron mold and the second cast iron mold together, when the first cast iron mold and the second cast iron mold are pushed, the combined shaft of the two right half shafts can be guided to the shaft outer set under the rolling of the ball, so that the shaft outer set limits the combined shaft of the two right half shafts, so that the first cast iron mold and the second cast iron mold can be driven by the motor to flip and turn upside down. Compared with the prior art, the present invention can reduce the work intensity of the operator; The present invention drives the mounting frame to move downward to be close to the first cast iron mold through the operation of the cylinder, and then pushes and pulls the moving frame back and forth through the operation of the electric telescopic rod. In this process, the first cast iron mold is reciprocatedly hammered at different positions during the sliding process by the meshing of the gears and racks on each knocking component. In the initial state after flipping, the lead buckle is in the mold cavity of the first cast iron mold. After being knocked, the lead buckle can fall into the mold cavity of the second cast iron mold, and after being knocked, the lead buckle in the mold cavity will be automatically separated from the residual slag in the mold cavity, so as to facilitate the removal of the lead buckle. After the knocking operation is completed, the first cast iron mold is removed from the second cast iron mold, and the operator only needs to enter the site to take the lead buckle out of the mold cavity of the second cast iron mold and put it into the lead buckle tray, thereby avoiding the operator from inhaling lead smoke on site and endangering health. After pouring the molten sample in the crucible into the mold cavity of the first cast iron mold, the crucible is placed in the placement hole of the crucible stand, and then the crucible stand is inserted into the main body of the operating table to receive the slag knocked down later. The operator only needs to extract the crucible stand and take the crucible away for secondary batching and secondary gold testing. The present invention ensures the health of the operator and allows all the slag to enter the secondary gold testing crucible, thereby ensuring the accuracy of the experimental data. The present invention arranges a plurality of auxiliary moving components corresponding to the striking components on the top of the mold body, and lowers the striking components to a working position through a cylinder. The height of the working position is such that the rotation path of a hammering ball just passes through two gravity balls. Therefore, when the hammering ball rotates, it can strike the two gravity balls, thereby driving the mold body to vibrate together. At the same time, after the hammering ball is separated from the two gravity balls, the two gravity balls can swing left and right under the action of a hook spring, thereby causing the mold body to be vibrated laterally when shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a structural schematic diagram of a multifunctional operating table for fire assaying proposed by the present invention; Figure 2This is a front view structural schematic diagram of a multifunctional operating table for fire assaying proposed by the present invention; Figure 3 It is a schematic structural diagram of the first cast iron mold and the second cast iron mold proposed in the first embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the off-axis kit proposed by the present invention; Figure 5 This is a schematic diagram of the guide bracket structure proposed by the present invention; Figure 6 This is a schematic diagram of the mounting frame structure proposed by the present invention; Figure 7 This is a schematic structural diagram of the mounting frame proposed by the present invention from another viewing angle; Figure 8 This is a schematic diagram of the structure of the knocking component proposed by the present invention; Fig. 9 A schematic diagram of the structure of the crucible stand proposed by the present invention; Fig.10 It is a schematic diagram of the side view structure of the auxiliary moving component proposed in the second embodiment of the present invention; In the figure: 1. operating table body; 2. first cast iron mold; 21. mold body; 22. mold cavity; 23. left half shaft; 24. right half shaft; 25. limit groove; 26. hinge seat; 27. pin shaft; 28. swing arm; 29. ​​gravity ball; 210. spring rod; 211. hook spring; 3. second cast iron mold; 4. shaft outer set; 41. collar; 42. receiving hole; 43. limit protrusion; 5. guide bracket; 51. rack rod; 52. U-shaped seat; 53. ball; 6. motor; 7. cylinder; 8. Mounting frame; 81. fixing seat; 82. guide rod; 83. outer frame; 84. slide groove; 9. rack; 10. knocking assembly; 101. roller; 102. gear; 103. disc; 104. positioning shaft; 105. fixing rod; 106. hammer ball; 107. notch; 108. first spring shaft; 109. second spring shaft; 1010. tension spring; 11. moving frame; 12. electric telescopic rod; 13. crucible frame; 131. shelf plate; 132. placement hole; 133. handle. DETAILED DESCRIPTION

[0017] The following will be combined with 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. Example

[0018] See also Figure 1 and Figure 2The present invention provides a technical solution: a multifunctional operating table for fire assaying, comprising an operating table body 1, on which a first cast iron mold 2 and a second cast iron mold 3 are stacked, the inner side surface of the operating table body 1 is provided with a guide bracket 5 for supporting the first cast iron mold 2 and the second cast iron mold 3 on the operating table body 1, and an axis outer sleeve 4 for clamping the first cast iron mold 2 and the second cast iron mold 3 under the guidance of the guide bracket 5, and a motor 6 for turning the first cast iron mold 2 and the second cast iron mold 3 up and down through the axis outer sleeve 4 is fixed on the outer side surface of the operating table body 1, and the operating table body 1 is provided with a plurality of guide brackets 5 for supporting the first cast iron mold 2 and the second cast iron mold 3 on the operating table body 1. A cylinder 7 is fixed to the top, a mounting frame 8 which moves vertically under the drive of the cylinder 7 is arranged above the second cast iron mold 3, an electric telescopic rod 12 is fixed to one end of the mounting frame 8, a moving frame 11 which slides horizontally reciprocatingly under the drive of the electric telescopic rod 12 is arranged on the inner side of the mounting frame 8, a rack 9 is fixed to the outer side of the mounting frame 8, a plurality of knocking components 10 which cooperate with the rack 9 to repeatedly knock the flipped first cast iron mold 2 during the sliding process of the moving frame 11 are arranged on the inner side of the moving frame 11, and a crucible rack 13 for placing a crucible is arranged on the inner side of the operating table main body 1.

[0019] See also Figure 3 The first cast iron mold 2 and the second cast iron mold 3 both include a mold body 21, and a plurality of mold cavities 22 are provided on the mold body 21. A left half-shaft 23 is fixed to one end of the mold body 21, and a right half-shaft 24 is fixed to the other end of the mold body 21. When the first cast iron mold 2 and the second cast iron mold 3 are combined up and down, the two left half-shafts 23 and the two right half-shafts 24 can be assembled into axially overlapping axes, and limiting grooves 25 are provided on both sides of the combined axis of the two right half-shafts 24. It should be noted that the first cast iron mold 2 and the second cast iron mold 3 have the same structure, so they can be used interchangeably.

[0020] See also Figure 2 and Figure 5 The guide bracket 5 includes a rack rod 51, which is fixed on the operating table body 1. A U-shaped seat 52 is fixed on the top of the rack rod 51. The U-shaped seat 52 is provided with an arc groove that is compatible with the merging axis of the two right half shafts 24, and a plurality of balls 53 distributed at equal angles along the axis are embedded in the arc groove. One end of the right half shaft 24 of the first cast iron mold 2 is placed on the U-shaped seat 52 of the guide bracket 5, and one end of the left half shaft 23 of the first cast iron mold 2 is placed in the groove of the operating table body 1, and then the second cast iron mold 3 is buckled on the first cast iron mold 2. When the first cast iron mold 2 and the second cast iron mold 3 are pushed, the merging axis of the two right half shafts 24 can be guided to the shaft outer set 4 under the rolling of the ball 53, so as to facilitate the shaft outer set 4 to limit the merging axis of the two right half shafts 24.

[0021] See also Figure 2 and Figure 4The shaft outer set 4 includes a collar 41, and the axis of the collar 41 and the arc groove of the U-shaped seat 52 coincide. One end of the collar 41 is rotatably connected to the operating table body 1 and fixed to the output end of the motor 6. The other end of the collar 41 is provided with a receiving hole 42 capable of accommodating the merging shaft of the two right half shafts 24, and both sides of the receiving hole 42 are provided with limiting protrusions 43 adapted to the upper limit grooves 25 on the merging shaft of the two right half shafts 24. The merging shaft of the two right half shafts 24 is inserted into the receiving hole 42 of the collar 41, and is limited by the limiting protrusions 43 on both sides of the receiving hole 42 and the limiting grooves 25 on both sides of the merging shaft. When the motor 6 is turned on, the first cast iron mold 2 and the second cast iron mold 3 are turned over 180 degrees, so that the first cast iron mold 2 and the second cast iron mold 3 are inverted upside down.

[0022] See also Figure 2 and Figure 6 , Figure 7 The mounting frame 8 includes a fixed seat 81, which is fixed to the output end of the cylinder 7. A guide rod 82 is fixed to the top surface of the fixed seat 81 and is vertically slidably connected to the operating table body 1. An outer frame 83 is fixed to the bottom of the fixed seat 81 and is horizontally arranged along the length direction of the first cast iron mold 2 and the second cast iron mold 3. Both sides of the outer frame 83 are provided with slide grooves 84 that are slidably connected to the movable frame 11. The cylinder 7 can drive the mounting frame 8 to move downward to be close to the first cast iron mold 2. The electric telescopic rod 12 can push and pull the movable frame 11 reciprocatingly, and the knocking action can be completed through the cooperation of the cylinder 7 and the electric telescopic rod 12.

[0023] See also Figure 6 and Figure 7 , Figure 8 The striking assembly 10 includes a roller 101, which is rotatably connected to the moving frame 11. Both ends of the roller 101 extend through the outside of the moving frame 11 and are fixed with gears 102 meshing with the rack 9. A disc 103 is fixed to the middle of the roller 101. A plurality of positioning shafts 104 distributed in an annular manner around the roller 101 and a second spring shaft 109 arranged alternately with the positioning shaft 104 are fixed on the surface of the disc 103. A fixing rod 105 is hinged outside the positioning shaft 104. A hammer ball 106 is fixed to the end of the fixing rod 105 away from the positioning shaft 104. A notch 107 is provided on the fixing rod 105. A first spring shaft 108 is fixed inside 107, and the first spring shaft 108 is elastically connected to the second spring shaft 109 by a tension spring 1010. When the electric telescopic rod 12 pushes and pulls the movable frame 11 reciprocatingly, the gear 102 on each striking component 10 continuously rotates under the meshing with the rack 9, and then drives the disc 103 to rotate through the roller 101, and then drives the hammer ball 106 to rotate through the fixed rod 105. The hammer ball 106 can hammer the cast iron mold from above due to inertia, and under the reciprocating sliding of the movable frame 11, the first cast iron mold 2 is reciprocated and hammered at different positions during the sliding process.

[0024] See also Figure 1 , Fig. 9 The crucible stand 13 includes a frame plate 131, which is slidably inserted into the operating table body 1. A plurality of placement holes 132 for placing the crucible are provided on the frame plate 131, and the placement holes 132 are arranged corresponding to the mold cavity 22. A handle 133 is fixed to one end of the frame plate 131. A groove for accommodating the merging axis of the two left half shafts 23 is provided on the top of the operating table body 1 away from the shaft outer sleeve 4. The depth of the groove matches the U-shaped seat 52 of the guide bracket 5 and the axis of the sleeve ring 41. After the molten sample in the crucible is poured into the mold cavity 22 of the first cast iron mold 2, the crucible is placed in the placement hole 132 of the crucible stand 13, and then the crucible stand 13 is inserted into the operating table body 1 to receive the slag knocked down later.

[0025] The working principle and use process of the present invention in this embodiment are as follows: the first cast iron mold 2 and the second cast iron mold 3 in the present invention have the same structure, so they can be used interchangeably. During use, when the operator pours the molten sample in the crucible into the mold cavity 22 of the first cast iron mold 2, places the crucible in the placement hole 132 of the crucible stand 13, and then inserts the crucible stand 13 into the operating table body 1, and then waits for 20 minutes to allow the molten sample on the first cast iron mold 2 to solidify and take out the solidified sample, and places one end of the right half shaft 24 of the first cast iron mold 2 on the guide On the U-shaped seat 52 of the guide bracket 5, one end of the left half shaft 23 of the first cast iron mold 2 is placed in the groove of the operating table body 1, and then the second cast iron mold 3 is buckled on the first cast iron mold 2, and the first cast iron mold 2 and the second cast iron mold 3 are pushed so that the combined shaft of the two right half shafts 24 is inserted through the accommodating hole 42 of the collar 41, and the limiting protrusions 43 on both sides of the accommodating hole 42 and the limiting grooves 25 on both sides of the combined shaft are limited, and the motor 6 is turned on to drive the first cast iron mold 2 and the second cast iron mold 3 to flip 180 degrees, at this time, the first cast iron mold 2 is on the top and the second cast iron mold 3 is on the bottom; The cylinder 7 is turned on to drive the mounting frame 8 to move downward until it is close to the first cast iron mold 2, and then the electric telescopic rod 12 is turned on to push and pull the moving frame 11 back and forth. During this process, the gears 102 on each striking assembly 10 are continuously rotated under the meshing with the rack 9, and then the disc 103 is driven to rotate through the roller 101, and then the hammer ball 106 is driven to rotate by the fixed rod 105. The hammer ball 106 can hammer the first cast iron mold 2 from above through inertia. Under the reciprocating sliding of the moving frame 11, the first cast iron mold 2 is reciprocatedly hammered at different positions during the sliding process; In the initial state after flipping, the lead buckle is in the mold cavity 22 of the first cast iron mold 2, and after being knocked, the lead buckle can fall into the mold cavity 22 of the second cast iron mold 3, and after being knocked, the lead buckle in the mold cavity 22 will automatically separate from the residual slag in the mold cavity 22, so that the lead buckle can be easily taken out; After completing this operation, the first cast iron mold 2 is removed from the second cast iron mold 3, and the operator only needs to enter the site to take out the lead buckle from the mold cavity 22 of the second cast iron mold 3 and put it into the lead buckle tray, thereby avoiding the operator from inhaling lead smoke on site and endangering his health. After the lead buckle is taken out, the second cast iron mold 3 is driven by the motor 6 to flip and the slag in the mold cavity 22 is poured into the crucible below which corresponds to the mold cavity 22 one by one. After all the pouring is completed, the operator only needs to extract the crucible rack 13 below and take away the crucible for secondary batching and secondary gold testing. The present invention reduces the work intensity of the operator, ensures the health of the operator, and allows all the slag to enter the secondary gold testing crucible, thereby ensuring the accuracy of the experimental data. Example

[0026] Different from the first embodiment, the top of the mold body 21 in this embodiment is provided with several groups of auxiliary components corresponding to the striking components 10, such as Fig.10 As shown, the auxiliary motion assembly includes two symmetrically arranged hinge seats 26, the tops of the two hinge seats 26 are hinged with swing arms 28 through pin shafts 27, the tops of the two swing arms 28 are fixed with gravity balls 29, the sides of the two swing arms 28 are fixed with spring rods 210, the spring rods 210 on the two swing arms 28 are elastically connected by hook springs 211, and the two gravity balls 29 conflict with each other under the elastic force of the hook springs 211.

[0027] Different from the working principle of embodiment 1, when it is necessary to knock the first cast iron mold 2 or the second cast iron mold 3, the knocking assembly 10 is lowered to the working position by the cylinder 7. The height of the working position is that the rotation path of the hammer ball 106 just passes through the two gravity balls 29. Therefore, when the hammer ball 106 rotates, it can knock the two gravity balls 29, so that the two gravity balls 29 drive the mold body 21 to vibrate together. At the same time, after the hammer ball 106 is separated from the two gravity balls 29, the two gravity balls 29 can swing left and right under the action of the hook spring 211, thereby causing the mold body 21 to be vibrated laterally when shaking.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional operating table for fire assaying, comprising an operating table body (1), characterized in that: A first cast iron mold (2) and a second cast iron mold (3) are stacked on the operating table body (1); a guide bracket (5) for supporting the first cast iron mold (2) and the second cast iron mold (3) on the operating table body (1) and an off-axis sleeve (4) for clamping the first cast iron mold (2) and the second cast iron mold (3) under the guidance of the guide bracket (5) are arranged on the inner side surface of the operating table body (1); a motor (6) for turning the first cast iron mold (2) and the second cast iron mold (3) up and down through the off-axis sleeve (4) is fixed to the outer side surface of the operating table body (1); a cylinder (7) is fixed to the top of the operating table body (1); and the second cast iron mold ( A mounting frame (8) is arranged above the operating table (3) and is driven by a cylinder (7) to move vertically, an electric telescopic rod (12) is fixed to one end of the mounting frame (8), a moving frame (11) is arranged on the inner side of the mounting frame (8) and is driven by the electric telescopic rod (12) to slide back and forth horizontally, a rack (9) is fixed to the outer side of the mounting frame (8), and a plurality of knocking components (10) are arranged on the inner side of the moving frame (11) for repeatedly knocking the first cast iron mold (2) after the flipping in cooperation with the rack (9) during the sliding process of the moving frame (11), and a crucible rack (13) for placing a crucible is arranged on the inner side of the operating table body (1).

2. A multifunctional operating table for fire assaying according to claim 1, characterized in that: The first cast iron mold (2) and the second cast iron mold (3) both comprise a mold body (21), the mold body (21) being provided with a plurality of mold cavities (22), a left half-shaft (23) being fixed to one end of the mold body (21), and a right half-shaft (24) being fixed to the other end of the mold body (21), and when the first cast iron mold (2) and the second cast iron mold (3) are combined up and down, the two left half-shafts (23) and the two right half-shafts (24) can be combined into axes that overlap axially, and limiting grooves (25) are provided on both sides of the combined axis of the two right half-shafts (24).

3. A multifunctional operating table for fire assaying according to claim 2, characterized in that: The guide bracket (5) comprises a frame rod (51), the frame rod (51) being fixed to the operating table body (1), a U-shaped seat (52) being fixed to the top of the frame rod (51), an arc groove being provided on the U-shaped seat (52) being adapted to the combined axis of the two right half shafts (24), and a plurality of balls (53) being embedded in the arc groove and distributed at equal angles along the axis.

4. A multifunctional operating table for fire assaying according to claim 3, characterized in that: The shaft outer sleeve (4) comprises a collar (41), the collar (41) and the axis of the arc groove of the U-shaped seat (52) coincide with each other, one end of the collar (41) is rotatably connected to the operating table body (1) and fixed to the output end of the motor (6), and the other end of the collar (41) is provided with a receiving hole (42) capable of accommodating the combined shaft of the two right half shafts (24), and both sides of the receiving hole (42) are provided with limit protrusions (43) adapted to the limit grooves (25) on the combined shaft of the two right half shafts (24).

5. The multifunctional operating table for fire assaying according to claim 1, characterized in that: The mounting frame (8) comprises a fixed seat (81), the fixed seat (81) being fixed to the output end of the cylinder (7), a guide rod (82) being fixed on the top surface of the fixed seat (81) and being vertically slidably connected to the operating table body (1), an outer frame (83) being fixed on the bottom of the fixed seat (81) and being horizontally arranged along the length direction of the first cast iron mold (2) and the second cast iron mold (3), and slide grooves (84) being slidably connected to the movable frame (11) being provided on both sides of the outer frame (83).

6. A multifunctional operating table for fire assaying according to claim 1, characterized in that: The striking assembly (10) comprises a roller (101), the roller (101) being rotatably connected to a moving frame (11), both ends of the roller (101) extending outside the moving frame (11) and being fixed with gears (102) meshing with a rack (9), a disk (103) being fixed in the middle of the roller (101), a plurality of positioning shafts (104) being annularly distributed around the roller (101) and a plurality of positioning shafts (104) being connected to the positioning shafts (9) being fixed on the disk surface of the disk (103). 104), the positioning shaft (104) is hingedly connected to a fixing rod (105) outside, a hammer ball (106) is fixed to one end of the fixing rod (105) away from the positioning shaft (104), a notch (107) is provided on the fixing rod (105), a first spring shaft (108) is fixed in the notch (107), and the first spring shaft (108) and the second spring shaft (109) are elastically connected via a tension spring (1010).

7. A multifunctional operating table for fire assaying according to claim 2, characterized in that: The crucible stand (13) comprises a frame plate (131), the frame plate (131) is slidably inserted into the operating table body (1), a plurality of placement holes (132) for placing crucibles are provided on the frame plate (131), and the placement holes (132) are arranged corresponding to the mold cavity (22), and a handle (133) is fixed to one end of the frame plate (131).

8. The multifunctional operating table for fire assaying according to claim 2, characterized in that: A groove for accommodating the merging shaft of the two left half shafts (23) is provided on the top of one side of the operating table body (1) away from the outer shaft sleeve (4).

9. A multifunctional operating table for fire assaying according to claim 2, characterized in that: The top of the mold body (21) is provided with a plurality of groups of auxiliary components corresponding to the knocking components (10).

10. A multifunctional operating table for fire assaying according to claim 9, characterized in that: The auxiliary motion assembly comprises two symmetrically arranged hinge seats (26), the tops of the two hinge seats (26) are hinged with swing arms (28) via pin shafts (27), the tops of the two swing arms (28) are fixed with gravity balls (29), the sides of the two swing arms (28) are fixed with spring rods (210), and the spring rods (210) on the two swing arms (28) are elastically connected via hook springs (211).

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