Full protection quick change bracket

Abstract

The utility model discloses a full protection type quick change bracket, including oil cylinder, indicating rod, electronic warning sensor and be used for containing box, and the full protection apron is equipped with in the box front end, forms the containing space of full closure. The piston rod of oil cylinder connects quick change pin shaft, and the quick change pin shaft is equipped with the guide seat, and the box top is equipped with the long hole of indicating rod up and down sliding, and the guide seat is slidably connected with the bottom of indicating rod, and the piston rod of oil cylinder stretches out, and promotes indicating rod to rise, and the piston rod of oil cylinder retracts, and pulls indicating rod to fall back. Through the lifting type indicating rod, the horizontal movement of oil cylinder pin shaft is converted into vertical lifting movement, and the long hole required for the vertical lifting movement of indicating rod is very small, and the full protection apron seals the box, avoids the material of conventional material and small particle to enter the box, and the maintenance process of oil cylinder installation box regular cleaning is saved, and the hydraulic pipeline, sensor and cable are protected.

Description

Technical Field

[0001] This utility model relates to a quick-change bracket for loaders, and more particularly to a fully protective quick-change bracket. Background Technology

[0002] Loaders operate under a variety of conditions and are complex, requiring a variety of attachments for different conditions. As the conditions change, the attachments at the front end also need to be changed quickly. Loaders equipped with quick-change brackets can achieve quick replacement of attachments.

[0003] Currently, quick-change brackets used on loaders often require indicator rods with grooves for their mechanical indication, as shown in CN 119041516 A. This results in poor sealing and protection of the mechanical indication, allowing fine particles to easily accumulate in the quick-change cylinder housing, causing corrosion and damage to the hydraulic cylinder. Regular cleaning of the accumulated material inside the cylinder is necessary, increasing maintenance steps and time. Furthermore, the hydraulic lines and electronic sensor cables of the quick-change cylinders in current quick-change brackets are exposed, making them highly susceptible to damage from materials or obstacles. Replacing damaged hydraulic cylinders, hydraulic lines, and cables is time-consuming and labor-intensive. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a fully protective quick-change bracket to solve the problem of low sealing and protection performance caused by the excessively large moving groove of the existing indicator rod.

[0005] Technical solution: The present invention provides a fully protective quick-change bracket, which includes a hydraulic cylinder, an indicator rod, and a housing for accommodating the hydraulic cylinder. The piston rod of the hydraulic cylinder is connected to a guide seat. The top of the housing is provided with an elongated hole for the indicator rod to slide up and down. The guide seat is slidably connected to the bottom of the indicator rod. The piston rod of the hydraulic cylinder extends out and pushes the indicator rod to rise.

[0006] Preferably, the guide seat is provided with an inclined guide groove, and the bottom of the indicator rod is provided with a rotating sleeve that cooperates with the guide groove.

[0007] Preferably, the left and right piston rods of the hydraulic cylinder are respectively connected to pins, the guide seat is connected to the pins, and the pins are provided with a plane for mounting the guide seat.

[0008] Preferably, a sensor is provided inside the housing, and a sensing block that cooperates with the sensor is provided on the guide bracket. The piston rod extends out, and the sensor receives the signal from the sensing block.

[0009] Preferably, the top of the housing is connected by a reinforcing rib plate and a hanging assembly, and the reinforcing rib plate is provided with a viewing window for observing whether the indicator rod is raised or not.

[0010] Preferably, the hanging assembly and the reinforcing rib are provided with side hinge plate assemblies on both sides, and the box body includes a U-shaped plate and a protective frame. The two ends of the U-shaped plate and the protective frame are connected to the side hinge plate assemblies, and the open side of the U-shaped plate is connected to the protective frame.

[0011] Preferably, the box body has an opening on the side, and a mounting seat for fixing the quick-change cylinder is provided on the side wall opposite to the opening side of the box body. A cover plate for closing the opening of the box body is connected to the protective frame.

[0012] Preferably, the quick-change cylinder is provided with a first oil port, a second oil port, and a third oil port at the middle and both ends for controlling the extension and retraction of the piston rod. The first oil port is connected to the control oil circuit, and the second oil port is connected to the control oil circuit and the second oil port respectively through a three-way interface.

[0013] Preferably, the bottom of the side hinge plate assembly is provided with a support plate for supporting the cylinder pin.

[0014] Preferably, the top of the side hinge plate assembly is provided with an attachment hook guide sleeve.

[0015] Preferably, the mounting assembly includes a main steel pipe and a mounting pin, with mounting pin fixing seats at both ends of the main steel pipe, and the mounting pin is inserted into the mounting pin fixing seats.

[0016] Preferably, the top of the reinforcing rib is provided with an interlocking groove, the middle of the hanging assembly is sleeved with the middle hinge plate assembly, the middle of the middle hinge plate assembly is inserted into the interlocking groove, and the tail is connected to the back of the box.

[0017] Beneficial Effects: Compared with the prior art, this utility model has the following significant advantages: 1. Reduced size of the indicator rod moving slot: By using a lifting indicator rod, the horizontal movement of the hydraulic cylinder pin is converted into a vertical lifting movement. The elongated hole required for the vertical lifting movement of the indicator rod is very small, and the indicator rod is always tightly fitted in the elongated hole, preventing fine particles from entering the housing and eliminating the need for regular cleaning of the hydraulic cylinder housing; 2. Protection of hydraulic lines: By concealing the quick-change hydraulic lines, sensors, and cables, damage to the hydraulic lines and cables from falling materials or sharp obstacles is prevented, slowing down the replacement of hydraulic lines and cables and greatly reducing the replacement frequency; 3. Dual protection: Whether the hydraulic cylinder pin is in position can be determined by observing the mechanical indicator rod rising. At the same time, the operator can also determine whether the hydraulic cylinder pin is in position through sensor alarms. The mechanical and electronic dual judgment is more reliable. Attached Figure Description

[0018] Figure 1 A schematic diagram of the fully protective quick-change bracket, indicating mechanism, and hydraulic cylinder assembly structure;

[0019] Figure 2 This is a schematic diagram of the hydraulic cylinder structure and its connection relationships;

[0020] Figure 3 This is a schematic diagram of the hydraulic cylinder pin structure;

[0021] Figure 4 This is a schematic diagram of a U-shaped plate structure;

[0022] Figure 5 This is a schematic diagram of the indicating mechanism.

[0023] Figure 6 This is a schematic diagram of the guide seat structure of the indicating mechanism;

[0024] Figure 7 This is a schematic diagram of the front structure of the fully protected quick-change bracket;

[0025] Figure 8 Schematic diagram of a fully protective quick-change bracket structure for removing the cover plate;

[0026] Figure 9 This is a schematic diagram of the electronic alarm mechanism.

[0027] Figure 10 This is a schematic diagram of the back structure of the fully protected quick-change bracket;

[0028] Figure 11 A schematic diagram of the back structure of the fully protective quick-change bracket for removing the sensor protection box cover;

[0029] Figure 12 This is a schematic diagram of the mounting component structure. Detailed Implementation

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0031] like Figures 1 to 9 As shown, this utility model discloses a fully protective quick-change bracket. The quick-change bracket is installed at the front end of the working linkage of the loader, which can realize the quick replacement of various loader attachments.

[0032] The quick-change bracket 1 has a housing at its bottom, and the housing contains a quick-change hydraulic cylinder system 2. The quick-change hydraulic cylinder system 2 includes a hydraulic cylinder 21, such as... Figure 2 , Figure 3 Hydraulic cylinder 21 is a double-acting quick-change hydraulic cylinder. It has piston rods at both the left and right ends, and hydraulic cylinder pins 3 are mounted on the piston rods. The hydraulic cylinder pins 3 extend and retract horizontally with the left and right piston rods of hydraulic cylinder 21. When the hydraulic cylinder pins 3 extend, the quick-change bracket 1 connects to the loader attachment. An indicating mechanism 4 is mounted on the hydraulic cylinder pins 3. The indicating mechanism 4 is used to indicate whether the left and right hydraulic cylinder pins 3 are in position. Figures 4 to 6The indicating mechanism 4 includes an indicating rod 41 symmetrically arranged on the left and right, a left guide seat 42 and a right guide seat 45. An elongated hole 161 is opened on the top of the housing. The indicating rod 41 passes through the elongated hole 161 and exits the housing. The indicating cylinder pin 3 is in place. The left guide seat 42 and the right guide seat 45 connect the cylinder pin 3 and the indicating rod 41, and convert the horizontal movement of the cylinder pin 3 into vertical lifting movement, so as to reduce the channel diameter required for the movement of the indicating mechanism 4. The left guide seat 42 and the right guide seat 45 can be the inclined guide groove structure shown in the figure. The bottom of the indicating rod 41 is slidably connected to the guide groove of the left guide seat 42 and the right guide seat 45 through a rotating sleeve 43, a bolt 8, a locking nut 44 and the guide groove of the left guide seat 42 and the right guide seat 45. The piston rod of the cylinder 21 extends out and pushes the indicating rod 41 up by the left guide seat 42 and the right guide seat 45. When the piston rod of the cylinder 21 retracts, the left guide seat 42 and the right guide seat 45 pull the indicating rod 41 down.

[0033] The cylinder pin 3 includes a pin 31 and a mounting pin 32. The end face of the pin 31 is provided with a piston rod mounting hole, and the two sides of the end face are provided with through holes and retaining spring fixing grooves. The mounting pin 32 passes through the mounting holes on the pin 31 and the piston rod, and is fixed by the retaining spring 33, thus fixing the pin 31 to the piston rod of the cylinder 21. The pin 31 is also provided with a mounting surface for mounting the guide seat 45.

[0034] like Figure 1 , Figure 7 , Figure 8 As shown, the box body has an opening on the side, and the opening is fitted with a cover plate 6. The cover plate 6 is fixed to the box body by bolts 8 around its perimeter. A mounting seat 17 is provided at the center of the side wall opposite the opening of the box body. The mounting shaft of the hydraulic cylinder 21 is inserted into the mounting seat 17 to realize the assembly of the hydraulic cylinder 21 and the box body.

[0035] like Figure 2 The hydraulic cylinder 21 has oil ports in the middle and at both ends. The control oil circuit injects oil into the cylinder 21 through these ports, causing the piston rods at both ends of the cylinder 21 to extend or retract. The middle port is connected to an adapter 26 via a hydraulic pipe 24. The adapter 26 connects to the control oil circuit. A three-way connector 25 is connected to the left port. One passage of the three-way connector 25 connects to the adapter 26 via a hydraulic pipe 22. Similarly, the adapter 26 connects to the control oil circuit, and the other passage of the three-way connector 25 connects to the right port via a hydraulic pipe 24. Figure 4 The box body and the side wall opposite the opening are provided with adapter mounting holes 163, and the bottom of the box body is provided with drainage holes.

[0036] The gearbox is equipped with an electronic alarm mechanism 5, which informs the driver whether the cylinder pin 3 is in position; if it is not in position, an audible and visual warning will be issued. Figure 9As shown, the electronic alarm mechanism 5 includes a sensor 51, which is fixed to the inner wall of the housing 1 and connected to the loader's electrical system via a connector 52 and a cable 54. The cable 54 is fixed inside the housing 1 by a cable clip 53 and screws 8. Figure 5 , Figure 6 A sensing block 422 is provided on the guide seat 45. The piston rod of the hydraulic cylinder 21 extends and drives the sensing block 422 to approach the sensor 51. The sensor 51 senses the sensing block 422 and generates a transmission signal. Sensor mounting holes 162 are provided on the side walls opposite the opening of the housing.

[0037] like Figure 8 , Figures 9 to 12 As shown, the quick-change bracket 1 is a welded component, including a top mounting assembly 15, a bottom housing, and a reinforcing rib plate 14 connecting the housing and the mounting assembly 15. The reinforcing rib plate 14 is a bent component with viewing windows on both sides for observing whether the indicator rod 41 is raised.

[0038] The top of the reinforcing rib plate 14 is provided with a fitting groove. The middle hinge plate assembly 13 is sleeved in the middle of the hanging assembly 15. The middle hinge plate assembly 13 includes two hinge plates. The tail of the middle hinge plate assembly 13 is connected to the box body, and the middle part is inserted into the fitting groove. A middle reinforcing rib plate 112 is welded between the hanging assembly 15 and the two middle hinge plate assemblies 13.

[0039] like Figure 12 The mounting component 15 is an integral welded component. The mounting component 15 includes a main steel pipe 151 and mounting pins 153. A mounting pin fixing seat 152 is welded to the inner side of each end of the main steel pipe 151. The two mounting pins 153 are respectively inserted into the fixing seats 152 at both ends and symmetrically welded to both sides of the main steel pipe 151. This structure can greatly improve the coaxiality of the two mounting pins 153 and improve the mounting accuracy of the quick-change bracket 1.

[0040] The structure formed by the reinforcing ribs 14 of the box body and the hanging assembly 15 is symmetrically provided with side hinge plate assemblies 12 on both sides. In the side hinge plate assembly 12, the inner side of the top of the outer hinge plate is welded with an attachment hanging guide sleeve 110. The middle of the opposite surfaces of the two hinge plates of the side hinge plate assembly 12 is welded with double dovetail reinforcing ribs 114 and bucket limiting block 115. The bottom is welded with a support plate 117 for supporting the oil cylinder pin 3. The bottom end of the side hinge plate assembly 12 is welded with an unloading limit 116.

[0041] In the side hinge plate assembly 12, a side reinforcing rib plate 111 is welded between the hinge plate located on the inner side (near the reinforcing rib plate 14) and the hanging assembly 15 and the middle hinge plate assembly 13. An attachment joint mounting plate 113 is welded on the reinforcing rib plate 111.

[0042] The enclosure is formed by splicing a U-shaped plate 16, a protective frame 11, and a side hinge plate assembly 12. The two ends of the U-shaped plate 16 and the protective frame 11 are welded and fixed to the inner hinge plate of the side hinge plate assembly 12. The two sides of the opening of the U-shaped plate 16 and the upper and lower sides of the protective frame 11 are fitted together. The cover plate 6 is connected to the protective frame 11 around the perimeter by bolts 8 to close the enclosure opening. The mounting base 17 is located at the center of the closed side of the U-shaped plate 16. The back of the U-shaped plate 16 is welded and fixed to the tail of the middle hinge plate assembly 13 to form a robust box-shaped installation space. Sensor protection boxes 19 are symmetrically welded to both ends of the back of the U-shaped plate 16, and cover plates 7 are fixed to the sensor protection boxes 19 by bolts 8.

Claims

1. A fully protected quick-change bracket, comprising a hydraulic cylinder (21), an indicator rod (41), and a housing for accommodating the hydraulic cylinder (21), characterized in that, The piston rod of the cylinder (21) is connected to the guide seat. The top of the housing is provided with an elongated hole (161) for the indicator rod (41) to slide up and down. The guide seat is slidably connected to the bottom of the indicator rod (41). The piston rod of the cylinder (21) extends out and pushes the indicator rod (41) up.

2. The fully protective quick-change bracket according to claim 1, characterized in that, The guide seat is provided with an inclined guide groove, and the bottom of the indicator rod (41) is provided with a rotating sleeve (43) that cooperates with the guide groove.

3. The fully protective quick-change bracket according to claim 1, characterized in that, The left and right piston rods of the oil cylinder (21) are respectively connected to pins (31), the guide seat is connected to the pins (31), and the pins are provided with a plane for mounting the guide seat.

4. The fully protective quick-change bracket according to claim 1, characterized in that, The housing is equipped with a sensor (51), and the guide seat is equipped with a sensing block (422) that cooperates with the sensor (51). When the piston rod extends, the sensor (51) senses the sensing block (422) and generates a transmission signal.

5. The fully protective quick-change bracket according to claim 1, characterized in that, The top of the box is connected by a reinforcing rib plate (14) and a hanging assembly (15). The reinforcing rib plate (14) is provided with a window for observing whether the indicator rod (41) is raised or not.

6. The fully protective quick-change bracket according to claim 5, characterized in that, The hanging assembly (15) and the reinforcing rib plate (14) are provided with side hinge plate assemblies (12) on both sides. The box body includes a U-shaped plate (16) and a protective frame (11). The two ends of the U-shaped plate (16) and the protective frame (11) are connected to the side hinge plate assembly (12). The open side of the U-shaped plate (16) is connected to the protective frame (11).

7. The fully protective quick-change bracket according to claim 6, characterized in that, The U-shaped plate (16) has a mounting seat (17) for fixing the quick-change cylinder on the closed side, and a cover plate (6) for closing the opening of the box is connected to the protective frame (11).

8. The fully protective quick-change bracket according to claim 7, characterized in that, The quick-change cylinder (21) is provided with a first oil port, a second oil port, and a third oil port at the middle and both ends for controlling the extension and retraction of the piston rod. The first oil port is connected to the control oil circuit, and the second oil port is connected to the control oil circuit and the second oil port respectively through a three-way interface.

9. The fully protective quick-change bracket according to claim 5, characterized in that, The mounting assembly (15) includes a main steel pipe (151) and a mounting pin (153). The main steel pipe (151) has mounting pin fixing seats (152) at both ends, and the mounting pin (153) is inserted into the mounting pin fixing seat (152).

10. The fully protective quick-change bracket according to claim 5, characterized in that, The top of the reinforcing rib plate (14) is provided with an interlocking groove. The middle of the hanging assembly (15) is sleeved with the middle hinge plate assembly (13), and the middle of the hinge plate assembly (13) is inserted into the interlocking groove. The tail is connected to the back of the box.

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