Counter weight type weight increasing device of hoistway door self-closing device

Abstract

The utility model discloses a heavy hammer type weight increasing device of a hoistway door self-closing device, and belongs to the technical field of elevator hoistway door weight increasing devices. The device is novel in design and ingenious, the total weight of the heavy hammer can be controlled by arranging the first conical weighting blocks and the second conical weighting blocks to be matched with all the connecting assemblies and adjusting and increasing the number of the first conical weighting blocks, and therefore the situation that the heavy hammer is too heavy to affect door opening and closing power of a door machine is avoided; the gravity traction force when the hoistway door is closed can be effectively improved after the weight of the heavy hammer is properly increased, and meanwhile, the adjustability of the weight of the heavy hammer is realized, so that the hoistway door self-closing device can meet the use requirements under different wind power conditions; the first conical weighting block and the second conical weighting block are both made of lead, due to the design of the conical layered structure, the weight increasing effect of the heavy hammer is guaranteed, the influence of overweight on door opening and closing power of the door machine is avoided, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of elevator hall door weight-increasing devices, and in particular to a heavy hammer-type weight-increasing device for a hall door self-closing device. Background Art

[0002] The published patent with authorization announcement number CN205312846U discloses an elevator lobby door, which provides an elevator lobby door that suppresses the increase in closing resistance of the elevator lobby door caused by airflow, and the elevator lobby door comprises: an elevator lobby door panel, which is arranged between the elevator lobby opening of the elevator's lifting path and the elevator lobby and opens and closes the elevator lobby opening; and a sealing member, which is arranged on the door collision surface of the side end of the elevator lobby door panel in the closing direction, at a position closer to the elevator lobby side than the center line of the thickness of the elevator lobby door panel, to cut off the airflow flowing between the elevator lobby and the lifting path when the elevator lobby door panel is closed.

[0003] The hall door in the above patent is often affected by strong winds in the autumn and winter seasons in the north. During the closing process, the elevator hall door is often unable to provide sufficient gravity traction in the final stage of closing because the weight of the self-closing device is too light, resulting in the hall door not closing tightly or not being able to close, which in turn causes elevator failure. At present, the weights of the hall door self-closing devices on the market are mostly fixed weight designs, and the weight cannot be adjusted according to actual needs, making it difficult to adapt to usage requirements under different wind conditions.

[0004] To this end, the present application proposes a heavy hammer type weight increasing device for a hall door self-closing device. Utility Model Content

[0005] The present application proposes a heavy hammer type weight-increasing device for a hall door self-closing device to solve the problems raised in the above-mentioned background technology; by setting a first conical weight block and a second conical weight block, and cooperating with each connecting component, the total weight of the heavy hammer can be controlled by adjusting and increasing the number of the first conical weight blocks. In this way, it can avoid the influence of the heavy hammer on the power of opening and closing the door machine due to excessive weight, and ensure that the heavy hammer can effectively improve the gravity traction when the hall door is closed after appropriate weight increase, and at the same time realize the adjustability of the weight of the heavy hammer, so that the hall door self-closing device can adapt to the use requirements under different wind conditions. The first conical weight block and the second conical weight block are both made of lead, and the conical layered structure design not only ensures the weight-increasing effect of the heavy hammer, but also avoids the influence of excessive weight on the power of opening and closing the door machine, thereby greatly improving the practicality of the device.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] A weight-added device of a hall door self-closing device includes a weight body, a first conical weight block is arranged inside the weight body, a second conical weight block is arranged inside the first conical weight block, a first connecting component is arranged outside the second conical weight block, the first connecting component includes a first thread, the first thread is arranged inside the first conical weight block, a second thread is arranged outside the second conical weight block, and the first thread and the second thread are threadedly connected.

[0008] As a preferred embodiment, a second connecting assembly is provided inside the second conical weight block, and the second connecting assembly includes a clamping slot, and two clamping slots are provided inside the second conical weight block, and two clamping blocks are fixedly connected inside the first conical weight block, and the two clamping blocks are respectively engaged with the corresponding clamping slots by rotation;

[0009] By rotating the second conical weight block, the top end of the second conical weight block will contact the inner top of the first conical weight block. At this time, the locking block will rotate and extend into the inside of the slot. When the locking block is inside the slot, the first spring will reset, driving the first limit block to extend into the first limit slot for limiting. In this way, the stability of the connection between the first conical weight block and the second conical weight block is improved, thereby improving the practicality of the device.

[0010] As a preferred embodiment, a third connecting component is provided inside the two blocking blocks, and the third connecting component includes a first mounting groove, the two first mounting grooves are provided inside the blocking block, the two first mounting grooves are provided inside the two first springs, one end of the two first springs is fixedly connected to the first connecting block, the two first connecting blocks are fixedly connected to the first limiting block on the side away from the first spring, and the second conical weight block is provided with two first limiting grooves inside, and the two first limiting blocks extend into the first limiting groove on the side away from the first connecting block; when the blocking block is located inside the blocking groove, the first spring is reset to drive the first limiting block to extend into the first limiting groove for limiting, thereby improving the stability of the connection between the first conical weight block and the second conical weight block, thereby improving the practicality of the device.

[0011] As a preferred embodiment, a fourth connecting assembly is provided inside the second conical weight block, and the fourth connecting assembly includes a second mounting groove, two second mounting grooves are provided inside the second conical weight block, and second springs are provided inside the two second mounting grooves, and one end of the two second springs is fixedly connected to an arrow block, and two arrow grooves are provided inside the first conical weight block, and one end of the two arrow grooves extends into the corresponding arrow groove;

[0012] By overlapping the arrow block with the arrow groove, the second spring is reset, so that the arrow block extends into the arrow groove, thereby ensuring the stability of the connection between the middle section of the first conical weight block and the second conical weight block, thereby improving the practicality of the device.

[0013] As a preferred embodiment, a fifth connecting assembly is provided inside the second conical weight block, and the fifth connecting assembly includes a third mounting groove, two of the third mounting grooves are provided inside the second conical weight block, sleeve rods are fixedly connected to the inside of the two third mounting grooves, and third springs are provided on the outside of the two sleeve rods, one end of the two third springs is fixedly connected to the inside of the corresponding sleeve, and the two sleeves are slidably connected to the corresponding sleeve rods, two second limiting grooves are provided inside the first conical weight block, and one end of the two sleeves away from the third springs extends to the inside of the corresponding second limiting grooves;

[0014] By overlapping the sleeve with the second limiting groove, the sleeve in the third installation groove will be driven by the third spring to move outside the sleeve rod in the direction away from the third spring. At this time, the sleeve extends into the second limiting groove, thereby reinforcing the connection below the first conical weight block and the second conical weight block, thereby improving the practicality of the device.

[0015] As a preferred embodiment, a fixing assembly is provided inside the first conical weight block, and the fixing assembly includes a groove, two of the grooves are provided inside the first conical weight block, and threaded holes are provided inside the first conical weight block and the second conical weight block, and each of the threaded holes is communicated with the groove, and the interiors of the two grooves are threadedly connected to fixing bolts, and one end of the two fixing bolts extends into the interiors of the threaded holes;

[0016] By extending the fixing bolt through the groove into the threaded hole provided in the first conical weight block and the second conical weight block, the connection between the first conical weight block and the second conical weight block is fixed. The fixing bolt can enhance the stability of the connection, thereby improving the practicality of the device.

[0017] As a preferred embodiment, a first mounting assembly is provided inside the weight body, the first mounting assembly includes a fourth mounting slot, the fourth mounting slot is provided inside the weight body, two fixed blocks are connected to the weight body at an internal height, a movable plate is rotatably connected to the interior of the two fixed blocks, a fourth spring is provided at the bottom of the two movable plates, and the bottom ends of the two fourth springs are fixedly connected to the interior of the weight body;

[0018] By holding the heavy hammer body with the left hand and the first conical weight block with the right hand, the first conical weight block is placed from the bottom of the heavy hammer body into the fourth mounting groove provided in the heavy hammer body. At this time, when the top end of the first conical weight block contacts the bottom of the movable plate, when the first conical weight block continues to move upward into the heavy hammer body, the movable plate will rotate upward ninety degrees in the fixed block, pulling the fourth spring to deformation. When the first conical weight block is completely in the fourth mounting groove, the movable plate loses its support and is reset by the fourth spring, driving the movable plate to reset and close the bottom of the heavy hammer body, thereby improving the practicality of the device.

[0019] As a preferred embodiment, a second mounting assembly is provided inside the two movable panels, the second mounting assembly including a positioning block, the positioning block being fixedly connected to the outside of one of the movable panels, a positioning groove being provided inside the other movable panel, and the bottom of the positioning block extending into the inside of the positioning groove;

[0020] The positioning block is extended into the positioning groove for positioning, thereby limiting the first conical weight block in the fourth installation groove, thereby improving the practicality of the device.

[0021] Beneficial effects of this application:

[0022] The weight-adding device of the hall door self-closing device is provided with a first conical weight-adding block and a second conical weight-adding block, and cooperates with each connecting component. By adjusting and increasing the number of the first conical weight-adding blocks, the total weight of the weight can be controlled. Thus, it is avoided that the weight is too heavy and affects the power of the door machine to open and close the door, and it is ensured that the weight can effectively improve the gravity traction when the hall door is closed after the weight is appropriately increased. At the same time, the adjustability of the weight of the weight is achieved, so that the hall door self-closing device can adapt to the use requirements under different wind conditions. The first conical weight-adding block and the second conical weight-adding block are both made of lead, and the design of the conical layered structure not only ensures the weight-adding effect of the weight, but also avoids the influence of excessive weight on the power of the door machine to open and close the door, thereby greatly improving the practicality of the device.

[0023] 1. The heavy hammer type weight increasing device of the hall door self-closing device realizes the effect of simple structure and convenient installation by setting the first mounting component, the fourth mounting slot, the fixed block, the movable plate, the fourth spring and the second mounting component, the positioning block and the positioning slot, thereby greatly improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the interior of the heavy hammer body of the device of this application;

[0025] Figure 2 This is a schematic diagram of the interior of the device of this application;

[0026] Figure 3This is a schematic top view of the interior of the device of the present application;

[0027] Figure 4 For this application Figure 3 Enlarged view of point A in the middle.

[0028] Reference numerals in the figure: 1, weight body; 2, first conical weight block; 3, second conical weight block; 4, first connecting assembly; 41, first thread; 42, second thread; 5, second connecting assembly; 51, slot; 52, block; 6, third connecting assembly; 61, first mounting slot; 62, first spring; 63, first connecting block; 64, first limiting block; 65, first limiting slot; 7, fourth connecting assembly; 71, second mounting slot; 72, second spring; 7 3. Arrow block; 74. Arrow groove; 8. Fifth connecting component; 81. Third mounting groove; 82. Sleeve rod; 83. Third spring; 84. Sleeve; 85. Second limiting groove; 9. Fixing component; 91. Groove; 92. Fixing bolt; 93. Threaded hole; 10. First mounting component; 101. Fourth mounting groove; 102. Fixing block; 103. Movable plate; 104. Fourth spring; 11. Second mounting component; 111. Positioning block; 112. Positioning groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0030] Reference Figure 1-4 A heavy hammer type weight increasing device of a hall door self-closing device includes a heavy hammer body 1, a first conical weighting block 2 is arranged inside the heavy hammer body 1, and a second conical weighting block 3 is arranged inside the first conical weighting block 2.

[0031] Reference Figure 1-4 , a first connecting component 4 is provided on the outside of the second conical weight block 3, and the first connecting component 4 includes a first thread 41, the first thread 41 is provided inside the first conical weight block 2, and a second thread 42 is provided on the outside of the second conical weight block 3, and the first thread 41 and the second thread 42 are threadedly connected; hold the first conical weight block 2 in the left hand, hold the second conical weight block 3 in the right hand, put the second conical weight block 3 from the bottom of the first conical weight block 2 into the inside of the first conical weight block 2, and then rotate the second conical weight block 3 in the forward direction, and through the cooperation of the thread on the outside of the second conical weight block 3 and the thread inside the first conical weight block 2, the first conical weight block 2 and the second conical weight block 3 are preliminarily connected.

[0032] Reference Figure 1-4The second connecting component 5 is provided inside the second conical weight block 3, and the second connecting component 5 includes a card slot 51, and the two card slots 51 are both provided inside the second conical weight block 3. The inside of the first conical weight block 2 is fixedly connected to two card blocks 52, and the two card blocks 52 are respectively engaged with the corresponding card slots 51 by rotation; by rotating the second conical weight block 3, the top of the second conical weight block 3 will contact the inner top of the first conical weight block 2. At this time, the card block 52 will rotate and extend into the card slot 51. When the card block 52 is located inside the card slot 51, it is reset by the first spring 62, driving the first limit block 64 to extend to the inside of the first limit groove 65 for limiting. In this way, the stability of the connection between the first conical weight block 2 and the second conical weight block 3 is improved, thereby improving the practicality of the device.

[0033] Reference Figure 1-4 , a third connecting assembly 6 is provided inside the two blocking blocks 52, and the third connecting assembly 6 includes a first mounting groove 61, the two first mounting grooves 61 are provided inside the blocking block 52, and the two first mounting grooves 61 are provided inside the first springs 62, one end of the two first springs 62 is fixedly connected to the first connecting block 63, and the two first connecting blocks 63 are fixedly connected to the first limiting block 64 on the side away from the first spring 62. The interior of the second conical weight block 3 is provided with two first limiting grooves 65, and the two first limiting blocks 64 extend into the first limiting groove 65 on the side away from the first connecting block 63; when the blocking block 52 is located inside the blocking groove 51, the first spring 62 is reset, driving the first limiting block 64 to extend to the inside of the first limiting groove 65 for limiting, thereby improving the stability of the connection between the first conical weight block 2 and the second conical weight block 3, thereby improving the practicality of the device.

[0034] Reference Figure 1-4 , a fourth connecting component 7 is provided inside the second conical weight block 3, and the fourth connecting component 7 includes a second mounting groove 71. The two second mounting grooves 71 are both provided inside the second conical weight block 3, and a second spring 72 is provided inside the two second mounting grooves 71. One end of the two second springs 72 is fixedly connected to an arrow block 73, and two arrow grooves 74 are provided inside the first conical weight block 2, and one end of the two arrow grooves 74 extends to the inside of the corresponding arrow groove 74; through the overlap of the arrow block 73 and the arrow groove 74, the second spring 72 is reset, so that the arrow block 73 extends to the inside of the arrow groove 74, thereby ensuring the stability of the connection between the middle section of the first conical weight block 2 and the second conical weight block 3, thereby improving the practicality of the device.

[0035] Reference Figure 1-4, the interior of the second conical weight block 3 is provided with a fifth connecting component 8, the fifth connecting component 8 includes a third mounting groove 81, two third mounting grooves 81 are provided inside the second conical weight block 3, the interiors of the two third mounting grooves 81 are fixedly connected with a sleeve rod 82, the exteriors of the two sleeve rods 82 are provided with a third spring 83, one end of the two third springs 83 are respectively fixedly connected to the interior of the corresponding sleeve 84, and the two sleeves 84 are respectively slidably connected to the corresponding sleeve rod 82, and the interior of the first conical weight block 2 is provided with two second The first and second conical weight blocks 2 and 3 are connected to each other through the spring 83 and the second conical weight blocks 83 are connected to each other through the spring 83. When the spring 83 is in the closed position, the spring 83 will move out of the closed position and the third spring 83 will move out of the closed position. When the spring 83 is in the closed position, the spring 83 will move out of the closed position and the third spring 83 will move out of the closed position. When the spring 83 is in the closed position, the spring 83 will move out of the closed position and the third spring 83 will move out of the closed position. When the spring 83 is in the closed position, the spring 83 will move out of the closed position and the third spring 83 will move out of the closed position.

[0036] Reference Figure 1-4 , a fixing component 9 is provided inside the first conical weight block 2, and the fixing component 9 includes a groove 91. Two grooves 91 are both provided inside the first conical weight block 2, and threaded holes 93 are provided inside the first conical weight block 2 and the second conical weight block 3, and each threaded hole 93 is connected to the groove 91. The interiors of the two grooves 91 are threadedly connected with fixing bolts 92, and one end of the two fixing bolts 92 extends into the interior of the threaded holes 93; by extending the fixing bolts 92 through the grooves 91 into the threaded holes 93 provided in the first conical weight block 2 and the second conical weight block 3, the connection between the first conical weight block 2 and the second conical weight block 3 is fixed, and the fixing bolts 92 can enhance the stability of the connection, thereby improving the practicality of the device.

[0037] Reference Figure 1-4, a first mounting assembly 10 is provided inside the heavy hammer body 1, and the first mounting assembly 10 includes a fourth mounting slot 101, and the fourth mounting slot 101 is provided inside the heavy hammer body 1. The internal height of the heavy hammer body 1 is connected to two fixed blocks 102, and the interiors of the two fixed blocks 102 are rotatably connected to movable plates 103. The bottoms of the two movable plates 103 are provided with fourth springs 104, and the bottom ends of the two fourth springs 104 are fixedly connected to the interior of the heavy hammer body 1; by holding the heavy hammer body 1 in the left hand and the first conical weight block 2 in the right hand, the first conical weight block 2 is placed from the bottom of the heavy hammer body 1 Into the fourth mounting groove 101 set in the heavy hammer body 1. At this time, when the top of the first conical weight block 2 contacts the bottom of the movable plate 103, when the first conical weight block 2 continues to move upward into the heavy hammer body 1, at this time, the movable plate 103 will rotate upward ninety degrees in the fixed block 102, pulling the fourth spring 104 to deformation. When the first conical weight block 2 is completely in the fourth mounting groove 101, at this time, the movable plate 103 loses its support and is reset by the fourth spring 104, driving the movable plate 103 to reset and close the bottom of the heavy hammer body 1, thereby improving the practicality of the device.

[0038] Reference Figure 1-4 A second mounting assembly 11 is provided inside the two movable plates 103, and the second mounting assembly 11 includes a positioning block 111. The positioning block 111 is fixedly connected to the outside of one of the movable plates 103, and a positioning groove 112 is provided inside the other movable plate 103, and the bottom of the positioning block 111 extends into the inside of the positioning groove 112; by extending the positioning block 111 into the inside of the positioning groove 112 for positioning, the first conical weight block 2 in the fourth mounting groove 101 is limited, thereby improving the practicality of the device.

[0039] Working principle: When the device is used, the first conical weight block 2 and the second conical weight block 3 are both made of lead, and the conical shape is convenient for stacking and installation. According to actual needs, an appropriate number of first conical weight blocks 2 are selected for stacking, thereby determining the weight of the heavy hammer body 1 that needs to be increased. First, hold the first conical weight block 2 in the left hand and the second conical weight block 3 in the right hand, and put the second conical weight block 3 from the bottom of the first conical weight block 2 into the inside of the first conical weight block 2, and then rotate the second conical weight block 3 in the forward direction to rotate it, through the screw on the outside of the second conical weight block 3 The groove cooperates with the internal thread of the first conical weight block 2 to make a preliminary connection between the first conical weight block 2 and the second conical weight block 3. When the second conical weight block 3 rotates, the top of the second conical weight block 3 will contact the inner top of the first conical weight block 2. At this time, the block 52 will rotate and extend to the inside of the slot 51. When the block 52 is located inside the slot 51, it is reset by the first spring 62, driving the first limit block 64 to extend to the inside of the first limit groove 65 for limiting, thereby improving the stability of the connection between the first conical weight block 2 and the second conical weight block 3.

[0040] Subsequently, the arrow block 73 will overlap with the arrow groove 74 and be reset by the second spring 72, so that the arrow block 73 extends into the arrow groove 74, thereby ensuring the stability of the connection between the middle section of the first conical weight block 2 and the second conical weight block 3.

[0041] At the same time, the sleeve 84 overlaps with the second limiting groove 85, and the sleeve 84 in the third mounting groove 81 will be driven by the third spring 83 to move the sleeve 84 outside the sleeve rod 82 in the direction away from the third spring 83. At this time, the sleeve 84 extends to the inside of the second limiting groove 85, thereby reinforcing the connection below the first conical weight block 2 and the second conical weight block 3.

[0042] Finally, the fixing bolt 92 is extended through the groove 91 to the threaded hole 93 provided in the first conical weight block 2 and the second conical weight block 3 to fix the connection between the first conical weight block 2 and the second conical weight block 3. The fixing bolt 92 can enhance the stability of the connection.

[0043] When the required weight is stacked, hold the heavy hammer body 1 with the left hand and the first conical weight block 2 with the right hand, and put the first conical weight block 2 from the bottom of the heavy hammer body 1 into the fourth installation slot 101 set in the heavy hammer body 1. At this time, when the top of the first conical weight block 2 contacts the bottom of the movable plate 103, when the first conical weight block 2 continues to move upward into the heavy hammer body 1, the movable plate 103 will rotate upward ninety degrees in the fixed block 102, pulling the fourth spring 104 to deformation. When the first conical weight block 2 is completely in the fourth installation slot 101, the movable plate 103 loses its support and is reset by the fourth spring 104, driving the movable plate 103 to reset, so that the positioning block 111 extends to the inside of the positioning slot 112 for positioning, thereby limiting the first conical weight block 2 in the fourth installation slot 101 and completing the installation.

[0044] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. A weight-increasing device of a hall door self-closing device, comprising a weight body (1), characterized in that: A first conical weight block (2) is provided inside the weight body (1), a second conical weight block (3) is provided inside the first conical weight block (2), a first connecting assembly (4) is provided outside the second conical weight block (3), the first connecting assembly (4) includes a first thread (41), the first thread (41) is provided inside the first conical weight block (2), a second thread (42) is provided outside the second conical weight block (3), and the first thread (41) and the second thread (42) are threadedly connected.

2. The heavy hammer type weight increasing device of the hall door self-closing device according to claim 1, characterized in that: A second connecting assembly (5) is provided inside the second conical weight block (3), and the second connecting assembly (5) includes a clamping slot (51), and the two clamping slots (51) are both provided inside the second conical weight block (3). Two clamping blocks (52) are fixedly connected inside the first conical weight block (2), and the two clamping blocks (52) are respectively clamped with the corresponding clamping slots (51) by rotation.

3. The heavy hammer type weight increasing device of the hall door self-closing device according to claim 2, characterized in that: A third connecting assembly (6) is provided inside the two clamping blocks (52), and the third connecting assembly (6) includes a first mounting groove (61). The two first mounting grooves (61) are provided inside the clamping block (52), and a first spring (62) is provided inside the two first mounting grooves (61). One end of the two first springs (62) is fixedly connected to the first connecting block (63), and the side of the two first connecting blocks (63) away from the first spring (62) is fixedly connected to the first limiting block (64). Two first limiting grooves (65) are provided inside the second conical weighting block (3), and the side of the two first limiting blocks (64) away from the first connecting block (63) extends to the inside of the first limiting groove (65).

4. The heavy hammer type weight increasing device of the hall door self-closing device according to claim 1, characterized in that: A fourth connecting assembly (7) is provided inside the second conical weight block (3), and the fourth connecting assembly (7) includes a second mounting groove (71), two second mounting grooves (71) are provided inside the second conical weight block (3), a second spring (72) is provided inside the two second mounting grooves (71), one end of the two second springs (72) is fixedly connected to an arrow block (73), and two arrow grooves (74) are provided inside the first conical weight block (2), and one end of the two arrow grooves (74) extends to the inside of the corresponding arrow groove (74).

5. The heavy hammer type weight increasing device of the hall door self-closing device according to claim 1, characterized in that: A fifth connecting assembly (8) is provided inside the second conical weight block (3), and the fifth connecting assembly (8) includes a third mounting groove (81). Two of the third mounting grooves (81) are provided inside the second conical weight block (3). The insides of the two third mounting grooves (81) are fixedly connected with a sleeve rod (82). The outsides of the two sleeve rods (82) are provided with a third spring (83). One end of the two third springs (83) is fixedly connected to the inside of the corresponding sleeve (84), and the two sleeves (84) are slidably connected to the corresponding sleeve rod (82). Two second limiting grooves (85) are provided inside the first conical weight block (2), and one end of the two sleeves (84) away from the third spring (83) extends to the inside of the corresponding second limiting groove (85).

6. The heavy hammer type weight increasing device of the hall door self-closing device according to claim 1, characterized in that: A fixing assembly (9) is provided inside the first conical weight block (2), and the fixing assembly (9) includes a groove (91). The two grooves (91) are both provided inside the first conical weight block (2). The first conical weight block (2) and the second conical weight block (3) are both provided inside with a threaded hole (93), and each of the threaded holes (93) is communicated with the groove (91). The interiors of the two grooves (91) are both threadedly connected with a fixing bolt (92), and one end of the two fixing bolts (92) extends into the interior of the threaded hole (93).

7. The heavy hammer type weight increasing device of the hall door self-closing device according to claim 1, characterized in that: A first mounting assembly (10) is provided inside the weight hammer body (1), the first mounting assembly (10) includes a fourth mounting slot (101), the fourth mounting slot (101) is provided inside the weight hammer body (1), the interior of the weight hammer body (1) is highly connected to two fixed blocks (102), the interiors of the two fixed blocks (102) are both rotatably connected to movable plates (103), the bottoms of the two movable plates (103) are both provided with fourth springs (104), and the bottom ends of the two fourth springs (104) are both fixedly connected to the interior of the weight hammer body (1).

8. The heavy hammer type weight increasing device of the hall door self-closing device according to claim 7, characterized in that: A second mounting assembly (11) is provided inside the two movable plates (103), and the second mounting assembly (111) includes a positioning block (111). The positioning block (111) is fixedly connected to the outside of one of the movable plates (103), and a positioning groove (112) is provided inside the other movable plate (103), and the bottom of the positioning block (111) extends to the inside of the positioning groove (112).

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