A multifunctional steel surface shot peening equipment

Abstract

The present invention discloses a multifunctional steel surface shot peening equipment, which relates to the field of shot peening treatment technology. The interior of the negative pressure chamber of the present invention is a negative pressure environment, and the air flow is used to drive the steel shots that have lost kinetic energy into the interior of the vacuum cleaner for collection. The collected steel shots can be re-supplied to the shot peening nozzle for use, so as to realize the recycling of materials, reduce the consumption of consumables, and reduce production costs; through multiple independently moving pressure clamping rods, it can adapt to complex curved surfaces and irregularly shaped workpieces, realize surface shot peening treatment of workpieces of various shapes, and expand the application range of the equipment; the shot peening nozzle is allowed to rotate and move linearly around the workpiece, thereby realizing all-round shot peening treatment, whether it is the complex surface of the workpiece or the internal details, it can be evenly treated, ensuring the consistency and comprehensiveness of the shot peening effect.

Description

Technical Field

[0001] The invention relates to the technical field of shot peening, in particular to multifunctional steel surface shot peening equipment. Background Art

[0002] Shot peening is a common process used to strengthen and clean the surface of workpieces. However, traditional shot peening equipment needs to hang the workpiece in a certain position when processing complex-shaped workpieces. Therefore, it is necessary to install hanging ears on the surface of the workpiece or the shape of the workpiece has its own hanging ear structure. This cannot ensure that the workpiece can be stably fixed. After the steel shot hits the workpiece, the workpiece will shake, and the workpiece surface cannot completely absorb the impact kinetic energy of the steel shot. Therefore, it is necessary to develop a shot peening equipment that can stably clamp parts of complex shapes, and can also significantly reduce the consumption of consumables during the shot peening process, so as to solve the technical defects of existing shot peening equipment. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a multifunctional steel surface shot peening equipment, comprising a main body shell, a negative pressure chamber is arranged on the main body shell, a vacuum cleaner interface is arranged at the bottom of the main body shell, the vacuum cleaner interface is connected to the vacuum cleaner, and is used to form a negative pressure environment inside the negative pressure chamber; a movable fixed clamping cavity is arranged in the negative pressure chamber, and a sealing pressure transmission cylinder arm is installed on the inner rotating seal of the fixed clamping cavity, and the inner circle of the sealing pressure transmission cylinder arm is fixed with two clamping pressure transmission bins arranged in parallel and interconnected, each clamping pressure transmission bin is provided with a plurality of clamping push cylinders in a circular array, and a pressure clamping rod for fixing the workpiece is arranged in the sliding seal inside the clamping push cylinder; two first shot peening nozzles are symmetrically arranged on both sides of the pressure clamping rod, and the first shot peening nozzle is fixed to the negative pressure chamber or the main body shell through a shot peening nozzle bracket.

[0004] Preferably, a window is provided on the negative pressure chamber, and a shielding curtain is provided on the window, so that the negative pressure chamber forms a semi-enclosed space, allowing a small amount of air to enter the negative pressure chamber, and allowing the air to flow through the shielding curtain to the vacuum cleaner interface.

[0005] Preferably, the clamping pressure transmission chamber is connected to the inside of the clamping push cylinder, and a clamping push piston is slidably provided on the inner wall of the clamping push cylinder, wherein the pressure clamping rod is fixed on the clamping push piston, wherein the clamping pressure transmission chamber is connected to the inside of the fixed clamping cavity through a pressure transmission pipe, and a pressure regulating port is provided on the fixed clamping cavity, and a clamping pressure container is fixedly connected at the pressure regulating port, and a piston plate is slidably and sealably connected inside the clamping pressure container, and the piston plate is fixed to the end of the telescopic rod of the clamping drive electric cylinder, and the telescopic cylinder of the clamping drive electric cylinder is fixed to the clamping pressure container.

[0006] Preferably, a first baffle is rotatably provided on one of the side surfaces of the fixed clamping cavity, the first baffle is fixed on the clamping pressure transmission chamber, a second shot peening nozzle is fixedly installed on the first baffle, the axis of the second shot peening nozzle is arranged along the radial direction of the fixed clamping cavity, and a second baffle is rotatably provided on the other side surface of the fixed clamping cavity, a driving pulley is also rotatably provided on the circumferential surface of the fixed clamping cavity through a driving pulley bracket, and the driving pulley and the second baffle are connected by a transmission belt.

[0007] Preferably, a support frame for supporting the guide rail and two spline shaft brackets are fixedly provided at a position of the main engine housing located inside the negative pressure chamber, and a spline shaft is rotatably mounted on the two spline shaft brackets, and the spline shaft is slidingly matched with the active pulley spline.

[0008] Preferably, both ends of the spline shaft are rotatably sleeved with swing arms, the swing arms are rotatably matched with the spline shaft bracket, and a swing arm support frame is also fixedly provided on the spline shaft bracket, the swing arm support frame is in contact and matched with the lower surface of the swing arm, so as to limit the swing position of the swing arm; a spline groove screw is slidably installed on one of the swing arms by means of spline sliding, a nut gear is threadedly sleeved on the spline groove screw, the nut gear is rotatably installed on the swing arm through a nut gear mounting plate, a clamping motor is also fixedly installed on the nut gear mounting plate, a clamping driving gear is fixedly installed on the output shaft of the clamping motor, and the clamping driving gear is meshed with the nut gear for transmission; an extrusion slide rod is rotatably and slidably provided on the other swing arm, a passive top plate and an active top plate are respectively installed at the opposite ends of the extrusion slide rod and the spline groove screw, wherein an extrusion spring is rotatably provided between the passive top plate and the swing arm, and the extrusion spring is arranged around the extrusion slide rod.

[0009] Preferably, each swing arm is rotatably mounted with a limiting swing piece, the upper surface of the limiting swing piece is magnetically overlapped with a permanent magnetic limiting block, the permanent magnetic limiting block is fixedly fitted with the swing arm, and a toggle piece in contact with the limiting swing piece is fixedly provided on the spline shaft to drive the swing arm to swing on the spline shaft bracket.

[0010] Preferably, the fixed clamping cavity is slidably mounted on the guide rail via a sliding support block, a driving motor is fixedly mounted on one of the support frames, and an output shaft of the driving motor is fixed to the spline shaft.

[0011] Preferably, a window is provided on the negative pressure chamber, a shielding curtain is provided on the window, and a moving belt for driving the fixed clamping cavity to move on the guide rail is rotatably installed on the top of the inner wall of the negative pressure chamber.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The interior of the negative pressure chamber of the present invention is a negative pressure environment, and the air flow is used to drive the steel shots that have lost kinetic energy into the vacuum cleaner for collection. The collected steel shots can be re-supplied to the shot peening nozzle for use, thereby realizing the recycling of materials, reducing the consumption of consumables, and reducing production costs; (2) The present invention can adapt to workpieces with complex curved surfaces and irregular shapes through multiple independently moving pressure clamping rods, realize surface shot peening treatment of workpieces of various shapes, and expand the application range of the equipment; (3) The design of the present invention allows the shot peening nozzle to rotate and move linearly around the workpiece, thereby realizing all-round shot peening treatment. Whether it is the complex surface or the internal details of the workpiece, it can be evenly treated, ensuring the consistency and comprehensiveness of the shot peening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the host shell of the present invention.

[0014] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 3 This is the layout diagram of the first shot peening nozzle of the present invention.

[0016] Figure 4 It is a schematic diagram of the structure of the nut and gear of the present invention.

[0017] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point A in the middle.

[0018] Figure 6 It is a structural schematic diagram of the extrusion slide rod of the present invention.

[0019] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point B in the middle.

[0020] Figure 8 This is a schematic diagram of the second baffle structure of the present invention.

[0021] Fig. 9 It is a schematic diagram of the fixed clamping cavity structure of the present invention.

[0022] Fig.10 It is a schematic diagram of the structure of the clamping and pushing cylinder of the present invention.

[0023] In the figure: 101-mainframe housing; 102-vacuum cleaner interface; 103-negative pressure chamber; 104-window; 105-shielding curtain; 106-support frame; 107-guide rail; 108-sliding support block; 109-shot peening nozzle bracket; 110-first shot peening nozzle; 111-clamping pressure vessel; 112-piston plate; 113-clamping drive electric cylinder; 114-moving belt; 115-second shot peening nozzle; 116-first baffle; 117-fixed clamping chamber; 118-second baffle; 119-driving pulley; 120-transmission belt; 121-spline shaft; 122-drive motor; 123-spline shaft bracket; 124-driving pulley bracket; 125-swing arm; 126-swing arm support frame; 127-permanent magnet limit block; 128-limit swing plate; 129-sliding plate; 130-nut gear; 131-spline screw; 132-clamping motor; 133-nut gear mounting plate; 134-active top plate; 135-clamping active gear; 136-extrusion spring; 137-extrusion slide rod; 138-passive top plate; 139-clamping pressure transmission chamber; 140-sealed pressure transmission cylinder arm; 141-pressure transmission tube; 142-pressure regulating port; 143-clamping push piston; 144-clamping push cylinder; 145-pressure clamping rod. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-10 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0025] The present invention provides a multifunctional steel surface shot peening device, comprising a main body shell 101, a negative pressure chamber 103 is arranged on the main body shell 101, a vacuum cleaner interface 102 is arranged at the bottom of the main body shell 101, and the vacuum cleaner interface 102 is connected to the vacuum cleaner to form a negative pressure environment inside the negative pressure chamber 103; a movable fixed clamping cavity 117 is arranged in the negative pressure chamber 103, and a sealing pressure transmission cylinder arm 140 is installed on the inner side rotating seal of the fixed clamping cavity 117, and the inner circle of the sealing pressure transmission cylinder arm 140 is fixed with two clamping pressure transmission bins 139 arranged in parallel and interconnected with each other, each clamping pressure transmission bin 139 is provided with a plurality of clamping push cylinders 144 in a circular array, and a pressure clamping rod 145 for fixing a workpiece is provided in the clamping push cylinder 144 in a sliding seal; two first shot peening nozzles 110 are symmetrically arranged on both sides of the pressure clamping rod 145, and the first shot peening nozzle 110 is fixed to the negative pressure chamber 103 or the main body shell 101 through a shot peening nozzle bracket 109. A window 104 is provided on the negative pressure chamber 103 , and a shielding curtain 105 is provided on the window 104 , which is used to make the negative pressure chamber 103 form a semi-enclosed space, allowing a small amount of air to enter the negative pressure chamber 103 , and allowing the air to flow through the shielding curtain 105 to the vacuum cleaner interface 102 . The clamping pressure transmission bin 139 is connected to the inside of the clamping push cylinder 144, and a clamping push piston 143 is slidably provided on the inner wall of the clamping push cylinder 144, wherein a pressure clamping rod 145 is fixed on the clamping push piston 143, wherein the clamping pressure transmission bin 139 is connected to the inside of the fixed clamping cavity 117 through a pressure transmission tube 141, and a pressure regulating port 142 is provided on the fixed clamping cavity 117, and a clamping pressure vessel 111 is fixedly connected at the pressure regulating port 142, and a piston plate 112 is slidably and sealingly connected in the clamping pressure vessel 111, and the piston plate 112 is fixed to the end of the telescopic rod of the clamping drive electric cylinder 113, and the telescopic cylinder of the clamping drive electric cylinder 113 is fixed to the clamping pressure vessel 111. A first baffle 116 is rotatably provided on one side of the fixed clamping cavity 117. The first baffle 116 is fixed on the clamping pressure transmission chamber 139. A second shot peening nozzle 115 is fixedly installed on the first baffle 116. The axis of the second shot peening nozzle 115 is arranged along the radial direction of the fixed clamping cavity 117. A second baffle 118 is rotatably provided on the other side of the fixed clamping cavity 117. A driving pulley 119 is rotatably provided on the circumferential surface of the fixed clamping cavity 117 through a driving pulley bracket 124. The driving pulley 119 and the second baffle 118 are connected by a transmission belt 120. A support frame 106 for supporting the guide rail 107 and two spline shaft brackets 123 are fixedly provided on the position of the main housing 101 located inside the negative pressure chamber 103. A spline shaft 121 is rotatably provided on the two spline shaft brackets 123. The spline shaft 121 is rotatably provided on the two spline shaft brackets 123. The spline shaft 121 is slidably fitted with the driving pulley 119 spline.Both ends of the spline shaft 121 are rotatably sleeved with swing arms 125, and the swing arms 125 are rotatably matched with the spline shaft bracket 123. The spline shaft bracket 123 is also fixedly provided with a swing arm support frame 126, and the swing arm support frame 126 is in contact with the lower surface of the swing arm 125 to limit the swing position of the swing arm 125; a spline groove screw 131 is slidably mounted on one of the swing arms 125 by spline sliding, and a nut gear 130 is threadedly sleeved on the spline groove screw 131, and the nut gear 130 is rotatably mounted on the swing arm 125 through a nut gear mounting plate 133. A clamping motor 132 is also fixedly mounted on the nut gear mounting plate 133, and a clamping driving gear 135 is fixedly mounted on the output shaft of the clamping motor 132, and the clamping driving gear 135 is meshed with the nut gear 130 for transmission; an extrusion slide bar 137 is rotatably and slidably provided on the other swing arm 125, and a passive top plate 138 and an active top plate 134 are respectively installed at the opposite ends of the extrusion slide bar 137 and the spline groove screw 131, wherein an extrusion spring 136 is rotatably provided between the passive top plate 138 and the swing arm 125, and the extrusion spring 136 is arranged around the extrusion slide bar 137. A limiting swing piece 128 is rotatably mounted on each swing arm 125, and a permanent magnetic limiting block 127 is magnetically overlapped on the upper surface of the limiting swing piece 128. The permanent magnetic limiting block 127 is fixedly matched with the swing arm 125, and a toggle piece 129 in contact with the limiting swing piece 128 is fixedly provided on the spline shaft 121, which is used to drive the swing arm 125 to swing on the spline shaft bracket 123. The fixed clamping cavity 117 is slidably mounted on the guide rail 107 through a sliding support block 108, and a driving motor 122 is fixedly mounted on one of the support frames 106, and the output shaft of the driving motor 122 is fixed to the spline shaft 121. A window 104 is provided on the negative pressure chamber 103, and a shielding curtain 105 is provided on the window 104. A moving belt 114 for driving the fixed clamping cavity 117 to move on the guide rail 107 is rotatably mounted on the top of the inner wall of the negative pressure chamber 103.

[0026] The working principle of a multifunctional steel surface shot peening device disclosed in the present invention is as follows: initially, the two swing arms 125 are in a horizontal position, that is, a position perpendicular to the spline shaft bracket 123, and the workpiece is placed between the passive top plate 138 and the active top plate 134, and then the clamping motor 132 is controlled, and the output shaft of the clamping motor 132 drives the clamping active gear 135 to rotate, and the clamping active gear 135 drives the nut gear 130 to rotate. The rotation of the nut gear 130 will drive the spline groove screw 131 to move linearly. It is precisely because the spline groove screw 131 is slidably connected to the swing arm 125 by means of a sliding key that the linear movement of the spline groove screw 131 will squeeze the workpiece, so that the workpiece is clamped between the passive top plate 138 and the active top plate 134. At this time, the extrusion spring 136 is in a compressed state, and the extrusion slide rod 137 slides with one of the swing arms 125. At this time, the workpiece is fixed by the active top plate 134 and the passive top plate 138. At this time, the drive motor 122 is controlled, such as Figure 5 As shown, let the spline shaft 121 rotate counterclockwise, and the toggle plate 129 will toggle the limiting pendulum plate 128 to separate from the permanent magnetic limiting block 127. Since the limiting pendulum plate 128 is constrained by the magnetic force of the permanent magnetic limiting block 127, when the toggle plate 129 is no longer in contact with the limiting pendulum plate 128, it will be attracted back by the permanent magnetic limiting block 127. Therefore, the rotation of the spline shaft 121 will not drive the swing arm 125 to move. Therefore, the spline shaft 121 can only drive the active pulley 119 to rotate, and the active pulley 119 drives the second baffle 118 to rotate through the transmission belt 120, and the second baffle 118 drives the clamping and pressure transmission bin 139 to rotate (including all parts fixed to the clamping and pressure transmission bin 139, and the pressure clamping rod 145 at this time is still retracted to the inside of the clamping push cylinder 144). The rotation of the clamping and pressure transmission bin 139 will drive the second shot peening nozzle 115 to rotate, thereby rotating around the surface of the workpiece. At the same time, the moving belt 114 can also drive the fixed clamping cavity 117 to move on the guide rail 107. Since the second shot peening nozzle 115 is also installed on the fixed clamping cavity 117, the second shot peening nozzle 115 will also move with it. At this time, the second shot peening nozzle 115 can both rotate around the workpiece and move in a straight line. The shot supply path of the second shot peening nozzle 115 can be the same as the connection and matching relationship with the clamping pressure transmission bin 139 , the clamping push cylinder 144 , the pressure transmission tube 141 , the sealing pressure transmission cylinder arm 140 , and the fixed clamping cavity 117 .

[0027] After the surface shot peening of the workpiece is completed, the clamping drive electric cylinder 113 at the clamping pressure vessel 111 is controlled, and the telescopic rod of the clamping drive electric cylinder 113 drives the piston plate 112 to move, and the piston plate 112 moves in the space inside the clamping pressure vessel 111, so that the space inside the clamping pressure vessel 111 is compressed, thereby causing the internal pressure to increase. Then the pressure enters the pressure transmission pipe 141 through the pressure regulating port 142, and then enters all the clamping pressure transmission chambers 139 through the pressure transmission pipe 141, and the pressure in the clamping pressure transmission chamber 139 increases. Since the clamping pressure transmission chamber 139 is connected to the inside of the clamping push cylinder 144, the pressure inside the clamping push cylinder 144 will increase. The pressure pushes the clamping push piston 143 to slide inside the clamping push cylinder 144, thereby pushing the pressure clamping rod 145 to move toward the center of the clamping pressure transmission chamber 139. Since the workpiece is at the center of the clamping pressure transmission chamber 139, the pressure clamping rod 145 will clamp the workpiece at this time. Since the surface shape of the workpiece is a complex curved surface, or an irregular shape, and since all the pressure clamping rods 145 move independently of each other, it can adapt to parts with complex surfaces and can clamp the surface of complex workpieces. Then, the clamping motor 132 is controlled to stop the active top plate 134 and the passive top plate 138 from clamping the workpiece (that is, to separate the active top plate 134 and the passive top plate 138 from the workpiece). The drive motor 122 is started, and the output shaft of the drive motor 122 drives the spline shaft 121 to rotate, such as Figure 5 As shown, the spline shaft 121 is allowed to rotate clockwise. Since the toggle plate 129 is fixed on the spline shaft 121, the toggle plate 129 will rotate synchronously. The toggle plate 129 toggle the limiting swing plate 128. Because the limiting swing plate 128 is restricted by the permanent magnetic limiting block 127 at this time, it will drive the swing arm 125 to move. The swing arm 125 will swing on the spline shaft bracket 123 and separate from the swing arm support frame 126. At this time, the passive top plate 138 and the active top plate 134 are kept away from the workpiece (to make room for the first shot peening nozzle 110). The left and right end faces of the workpiece are shot peened by the two first shot peening nozzles 110. The distance between the workpiece and the first shot peening nozzle 110 can be appropriately controlled by the moving belt 114.

[0028] Since the negative pressure chamber 103 has a negative pressure environment inside, external air will enter through the shielding curtain 105, and the flowing air will drive the steel shots (or fine sand) that have lost kinetic energy to flow along, and then enter the vacuum cleaner through the vacuum cleaner interface 102 for collection. The collected steel shots will continue to supply raw materials to all the first shot peening nozzles 110 and the second shot peening nozzles 115, thereby realizing the recycling function and reducing the consumption of consumables.

Claims

1. A multifunctional steel surface shot peening equipment, characterized in that: The main machine housing (101) comprises a negative pressure chamber (103) provided on the main machine housing (101), a vacuum cleaner interface (102) provided at the bottom of the main machine housing (101), the vacuum cleaner interface (102) being connected to a vacuum cleaner and used to form a negative pressure environment inside the negative pressure chamber (103); A movable fixed clamping cavity (117) is provided in the negative pressure chamber (103); a sealing pressure transmission cylinder arm (140) is installed on the inner rotating seal of the fixed clamping cavity (117); two clamping pressure transmission chambers (139) arranged in parallel and interconnected are fixed on the inner ring of the sealing pressure transmission cylinder arm (140); each clamping pressure transmission chamber (139) is provided with a plurality of clamping push cylinders (144) in a circular array; a pressure clamping rod (145) for fixing a workpiece is provided in a sliding seal in the clamping push cylinder (144); The clamping pressure transmission chamber (139) is connected to the inside of the clamping push cylinder (144); a clamping push piston (143) is slidably arranged on the inner wall of the clamping push cylinder (144); a pressure clamping rod (145) is fixed on the clamping push piston (143); the clamping pressure transmission chamber (139) is connected to the inside of the fixed clamping chamber (117) via a pressure transmission pipe (141); a pressure regulating port (142) is provided on the fixed clamping chamber (117); a clamping pressure vessel (111) is fixedly connected to the pressure regulating port (142); a piston plate (112) is slidably sealed in the clamping pressure vessel (111); the piston plate (112) is fixed to the end of the telescopic rod of the clamping drive electric cylinder (113); and the telescopic cylinder of the clamping drive electric cylinder (113) is fixed to the clamping pressure vessel (111); Two first shot peening nozzles (110) are symmetrically arranged on both sides of the pressure clamping rod (145), and the first shot peening nozzles (110) are fixed to the negative pressure chamber (103) or the main machine housing (101) via a shot peening nozzle bracket (109).

2. The multifunctional steel surface shot peening equipment according to claim 1, characterized in that: A window (104) is provided on the negative pressure chamber (103), and a shielding curtain (105) is provided on the window (104) for allowing the negative pressure chamber (103) to form a semi-enclosed space, allowing a small amount of air to enter the negative pressure chamber (103), and allowing the air to flow through the shielding curtain (105) to the vacuum cleaner interface (102).

3. The multifunctional steel surface shot peening equipment according to claim 2 is characterized in that: A first baffle (116) is rotatably mounted on one side of the fixed clamping cavity (117), the first baffle (116) being fixed on the clamping pressure transmission chamber (139), a second shot peening nozzle (115) being fixedly mounted on the first baffle (116), the axis of the second shot peening nozzle (115) being arranged along the radial direction of the fixed clamping cavity (117), a second baffle (118) being rotatably mounted on the other side of the fixed clamping cavity (117), a driving pulley (119) being rotatably mounted on the circumferential surface of the fixed clamping cavity (117) via a driving pulley bracket (124), the driving pulley (119) and the second baffle (118) being connected for transmission via a transmission belt (120).

4. The multifunctional steel surface shot peening equipment according to claim 3 is characterized in that: A support frame (106) for supporting the guide rail (107) and two spline shaft brackets (123) are fixedly provided on the main housing (101) at a position located inside the negative pressure chamber (103); a spline shaft (121) is rotatably mounted on the two spline shaft brackets (123); the spline shaft (121) and the driving pulley (119) are spline-slidably matched; swing arms (125) are rotatably sleeved on both ends of the spline shaft (121); the swing arms (125) and the spline shaft brackets (123) are rotatably matched; a swing arm support frame (126) is also fixedly provided on the spline shaft bracket (123); the swing arm support frame (126) and the lower surface of the swing arm (125) are in contact and match, and are used to limit the swing position of the swing arm (125); A spline groove screw rod (131) is slidably mounted on one of the swing arms (125) by means of spline sliding, a nut gear (130) is threadedly sleeved on the spline groove screw rod (131), the nut gear (130) is rotatably mounted on the swing arm (125) via a nut gear mounting plate (133), a clamping motor (132) is fixedly mounted on the nut gear mounting plate (133), a clamping driving gear (135) is fixedly mounted on the output shaft of the clamping motor (132), and the clamping driving gear (135) is meshed with the nut gear (130) for transmission; A squeezing slide bar (137) is rotatably and slidably provided on the other swing arm (125), and a passive top sheet (138) and an active top sheet (134) are respectively installed at opposite ends of the squeezing slide bar (137) and the spline groove screw rod (131), wherein a squeezing spring (136) is rotatably provided between the passive top sheet (138) and the swing arm (125), and the squeezing spring (136) is disposed around the squeezing slide bar (137).

5. The multifunctional steel surface shot peening equipment according to claim 4 is characterized in that: A limiting swing piece (128) is rotatably mounted on each swing arm (125); a permanent magnetic limiting block (127) is magnetically overlapped on the upper surface of the limiting swing piece (128); the permanent magnetic limiting block (127) is fixedly matched with the swing arm (125); a toggle piece (129) in contact with the limiting swing piece (128) is fixedly provided on the spline shaft (121) for driving the swing arm (125) to swing on the spline shaft bracket (123).

6. The multifunctional steel surface shot peening equipment according to claim 5, characterized in that: The fixed clamping cavity (117) is slidably mounted on the guide rail (107) via a sliding support block (108), a driving motor (122) is fixedly mounted on one of the support frames (106), and an output shaft of the driving motor (122) is fixed to the spline shaft (121).

7. The multifunctional steel surface shot peening equipment according to claim 6, characterized in that: A window (104) is provided on the negative pressure chamber (103), a shielding curtain (105) is provided on the window (104), and a moving belt (114) for driving the fixed clamping cavity (117) to move on the guide rail (107) is rotatably mounted on the top of the inner wall of the negative pressure chamber (103).

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