CN208950517U

CN208950517U - Municipal works detection concrete road surface boring and coring device

Info

Publication number: CN208950517U
Application number: CN201821457079.0U
Authority: CN
Inventors: 郑亮
Original assignee: Hunan Zhongke Engineering Testing Co Ltd
Current assignee: Hunan Zhongke Engineering Testing Co Ltd
Priority date: 2018-09-06
Filing date: 2018-09-06
Publication date: 2019-06-07
Anticipated expiration: 2028-09-06

Abstract

The utility model discloses municipal works detection concrete road surface boring and coring devices, including drilling operation head, coring control cabinet, manual clamping equipment, handheld drill nose end, joining rod, drilling operation head is embedded in coring control cabinet bottom inner portion, it is characterized in that, coring control cabinet includes push card core apparatus, shake drive apparatus, it clamps and pushes triggering equipment, extraneous control device, hand-held control equipment, promotion group to be triggered, auxiliary pushing device, guard shield, promotion group to be triggered is installed on clamping and pushes middle below triggering equipment, hand-held control equipment is vertically embedded into inside guard shield top and is located at middle, auxiliary pushing device is welded in promotion group bottom end to be triggered, for the prior art, the utility model uses can be on the basis of it passes through original rapid drilling, after its drilling, By extraneous power, its internal stone for boring out separation is taken out together.

Description

Municipal works detection concrete road surface boring and coring device

Technical field

The utility model relates to concrete drill hole device fields, particularly with regard to a kind of municipal works detection concrete Road surface boring and coring device.

Background technique

Municipal works refer to urban operating mechanism construction project, and in China, urban operating mechanism refers to be built in metropolitan district, town (township) planning If being arranged in range, providing the various buildings of paid or free public product and service based on government responsibility and obligation for resident Object, structures, equipment etc., the matched various public infrastructure developments of urban life belong to municipal works scope, than as usual The urban road seen, bridge, subway, such as the various pipelines being closely related with life: rainwater, sewage, upper water, middle water, electric power (red line is with outer portion), telecommunications, heating power, combustion gas etc., there are also square, the construction of urban afforestation etc. belongs to municipal works scope, Asphalt concrete pavement has many advantages, such as that surfacing is seamless, driving is with small vibration, open to traffic is fast, maintenance is easy, extensive Applied in different grades of highway construction, in bituminous pavement laying construction, compactness is evaluation bituminous highway pavement quality Important indicator, and core drilling method be detect compactness of pavement important method, for evaluating the construction compaction of asphalt surface course, Equipment of itself is extracted after drilling, to its inside, separated core also needs secondary operation, can just be drawn off.

For the unbearable device of current concrete road surface, function is more single, can accurately high speed mixed It drills on solidifying soil surface, but its equipment will directly take out after drilling, it is more difficult to take its internal core together out of, so that needing Secondary operation is carried out to it, be more troublesome.

Utility model content

In view of the deficiencies of the prior art, the utility model is achieved through the following technical solutions: municipal works detect With concrete road surface boring and coring device, including drilling operation head, coring control cabinet, manual clamping equipment, handheld drill nose end, rank Extension bar, the drilling operation head are embedded in coring control cabinet bottom inner portion, and the joining rod is embedded in coring control cabinet far from brill One end of hole operation head, described manual control clamping equipment one end are located inside coring control cabinet top and are flexibly connected, the linking Bar is installed vertically on handheld drill nose end bottom end far from one end of coring control cabinet and is electrically connected by conducting wire.

The coring control cabinet includes push card core apparatus, shake drive apparatus, clamps to push and trigger equipment, extraneous control Device, hand-held control equipment, promotion group to be triggered, auxiliary pushing device, guard shield, there are two the push card core apparatus is set And it is located at guard shield inside bottom both ends, the shake drive apparatus is set to push card core apparatus oblique upper, described to be triggered Promotion group is installed on clamping and pushes middle below triggering equipment, and the clamping pushes triggering equipment far from promotion group to be triggered One end is connect with extraneous control device bottom end hinge, the T-shaped structure of the hand-held control equipment, and the hand-held control equipment is vertical It is embedded in inside guard shield top and is located at middle, the auxiliary pushing device is welded in promotion group to be triggered bottom one End.

As advanced optimizing for the technical program, the auxiliary pushing device includes squeezing spring, auxiliary pulley, limit Pushing block pushes wheel, inclined push block, and the extruding spring vertical welding is in the limit inclined side bottom end of pushing block, the auxiliary Pulley outer surface is flexibly connected with limit pushing block, the rectangular triangular structure of inclined push block, the promotion wheel insertion An end face is tilted in inclined push block, the inclined push block welding pushes triggering in promotion group to be triggered bottom end, the clamping Equipment includes mounting electricity storage pack, straight sliding rail, hook-shaped push rod, linking mobile column, reset spring, and the linking mobile column is embedded in straight sliding rail Inside groove and flexible connection, the reset spring are horizontally installed between two linking mobile columns, and the linking mobile column is in hook Structure, described linking mobile column one end is embedded in inside extraneous control device and hinge connects, and the mounting electricity storage pack is set to extraneous control Device rear processed.

As advanced optimizing for the technical program, it is described the external world control device include central axis, force rod, engaging column, Return spring, force block, support block, the central axis is embedded in force rod one end and hinge connects, and the force rod is far from center One end of axis is connected with engaging column, and the engaging column is welded in force block bottom end, and the return spring is welded in two in level Between a force block, described linking mobile column one end is embedded in inside central axis and hinge connects, and the mounting electricity storage pack is set to center Axis rear, the shake drive apparatus include forced spring, installation force block, transmission shaft, shake trigger wheel, magnetic field wheel, lead energy Bar, the forced spring vertical welding in installation force block bottom end, described transmission shaft one end through shake trigger wheel, the biography One end of the separate shake trigger wheel of moving axis is embedded in magnetic field wheel inside and is located on same axle center, and the energy bar of leading is taken turns set on magnetic field Top.

As advanced optimizing for the technical program, the promotion group to be triggered include magnetic field ball, conductor, magnetic field sliding block, Spring, sliding rail, magnetizer, the magnetic field ball set there are two and are symmetrically arranged on conductor two sides, and the magnetic field sliding block is embedded in cunning Rail inside groove and flexible connection, the spring are welded in magnetic field outside face thereof in level orientation one end, there are two the sliding rail is set And it is installed on that magnetizer two sides are symmetrical, and the inclined push block welding is in magnetic field sliding block bottom end.

As advanced optimizing for the technical program, the push card core apparatus include set core lattice, the core of the card block, connecting layer, Drill head, limit layer, uniform welding is in connecting layer side surface in vertical direction for the core of the card block, and the connecting layer is far from the core of the card block One end fit in limit layer outer surface, the drill head be set to limit layer below, the core lattice two sides of setting are equipped with the core of the card block And it is symmetrical, the core of the card block is connected by connecting layer with limit layer.

As advanced optimizing for the technical program, the hand-held control equipment include lead ergosphere, inductive slot, triggering block, Secondary spring, stress laminate, quick conductor, conducting wire, the ergosphere upper and lower ends of leading are equipped with secondary spring and are located at middle, The secondary spring is installed on stress laminate inner surface far from the one end for leading ergosphere, the triggering block set there are two and be installed on by Inclined two sides in body bottom end and symmetrical are forced, the inductive slot is nested with triggering block, and the ergosphere of leading sets there are two and is located at Quick conductor both ends, the conducting wire top is electrically connected with quick conductor.

The utility model has the beneficial effects that: the utility model municipal works detection is filled with concrete road surface boring and coring It sets, when it is needed to its surface drilling, is pressed its stress laminate down by the external world, so that its secondary spring be squeezed Pressure so that the triggering block for being mounted on bottom is moved to inside inductive slot, by wire transmission in mounting electricity storage pack, make its mounting electricity storage pack by its The electric energy of internal script, which is led, to make it full of magnetic field in bar, thus by magnetic field it is mutually exclusive push moving field wheel belt Dynamic transmission shaft rotation, during transmission shaft rotates, to drill to it, when it completes the operation of drilling, by it Stress laminate is unclamped, and is exerted a force by extraneous power to its force block, when force block moves inside, will be passed through by force rod After three's contact, energy is imported in magnetizer until magnetic field ball touches together with conductor for the hook-shaped push rod of central axis tilting, The mutually exclusive power in magnetic field is made it through, pushes magnetic field sliding block mobile along sliding rail, inclined push block is moved to certain position When, limit pushing block will be pushed to move down, pushed away together to be limited layer by auxiliary pulley with connecting layer, the core of the card block Out, it after its stone being clamped, takes out.

For the prior art, the utility model using can its pass through original rapid drilling on the basis of, After it drills, by extraneous power, its internal stone for boring out separation is taken out together.

Detailed description of the invention

Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model Sign, objects and advantages will become more apparent upon:

Fig. 1 is the structural schematic diagram that concrete road surface boring and coring device is used in the utility model municipal works detection.

Fig. 2 is the schematic diagram of internal structure figure one of the utility model coring control cabinet.

Fig. 3 is the schematic diagram of internal structure figure two of the utility model coring control cabinet.

Fig. 4 is the schematic diagram of internal structure of the utility model coring control cabinet working condition.

Fig. 5 is the structural schematic diagram of the hand-held control equipment of the utility model.

In figure: drilling operation head -1, coring control cabinet -2, manual clamping equipment -3, handheld drill nose end -4, joining rod -5, Push card core apparatus -21, shake drive apparatus -22 clamp to push and trigger equipment -23, extraneous control device -24, hand-held control Equipment -25, auxiliary pushing device -27, guard shield -28, squeezes spring -271, auxiliary pulley-at promotion group -26 to be triggered 272, it limits pushing block -273, push wheel -274, inclined push block -275, mounting electricity storage pack -231, straight sliding rail -232, hook-shaped push rod - 233, it is connected mobile column -234, reset spring -235, central axis -241, force rod -242, engaging column -243, return spring - 244, force block -245, support block -246, forced spring -221, installation force block -222, transmission shaft -223, shake trigger wheel - 224, magnetic field takes turns -225, leads energy bar -226, magnetic field ball -261, conductor -262, magnetic field sliding block -263, spring -264, sliding rail - 265, magnetizer -266, set core lattice -211, the core of the card block -212, connecting layer -213, drill head -214, limit layer -215, lead ergosphere - 251, inductive slot -252, triggering block -253, secondary spring -254, stress laminate -255, quick conductor -256, conducting wire -257.

Specific embodiment

To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below In conjunction with specific embodiment and Detailed description of the invention, the preferred embodiment of the utility model is further described.

Embodiment

Fig. 1-Fig. 5 is please referred to, the utility model provides municipal works detection concrete road surface boring and coring device, including Drilling operation head 1, coring control cabinet 2, manual clamping equipment 3, handheld drill nose end 4, joining rod 5, the drilling operation head 1 are embedded in In 2 bottom inner portion of coring control cabinet, the joining rod 5 is embedded in the one end of coring control cabinet 2 far from drilling operation head 1, described Manual 3 one end of clamping equipment is located inside 2 top of coring control cabinet and is flexibly connected, and the joining rod 5 is far from coring control cabinet 2 One end be installed vertically on 4 bottom end of handheld drill nose end and by conducting wire be electrically connected.

The coring control cabinet 2 include push card core apparatus 21, shake drive apparatus 22, clamp push triggering equipment 23, Extraneous control device 24, hand-held control equipment 25, promotion group 26 to be triggered, auxiliary pushing device 27, guard shield 28, it is described to push away Dynamic the core of the card device 21 sets there are two and is located at 28 inside bottom both ends of guard shield, and the shake drive apparatus 22 is set to push card 21 oblique upper of core apparatus, the promotion group 26 to be triggered are installed on clamping and push triggering 23 lower section middle of equipment, the clamping The one end of triggering equipment 23 far from promotion group 26 to be triggered is pushed to connect with extraneous 24 bottom end hinge of control device, it is described hand-held The T-shaped structure of equipment 25 is controlled, the hand-held control equipment 25 is vertically embedded into inside 28 top of guard shield and is located at center Between, the auxiliary pushing device 27 is welded in 26 bottom end of promotion group to be triggered.

The auxiliary pushing device 27 includes squeezing spring 271, auxiliary pulley 272, limit pushing block 273, pushing wheel 274, inclined push block 275,271 vertical welding of extruding spring are slided in the limit inclined side bottom end of pushing block 273, the auxiliary It takes turns 272 outer surfaces to be flexibly connected with limit pushing block 273, the rectangular triangular structure of the inclined push block 275, the promotion Wheel 274 is embedded in inclined push block 275 and tilts an end face, and the inclined push block 275 is welded in 26 bottom end of promotion group to be triggered, The clamping pushes triggering equipment 23 to include mounting electricity storage pack 231, straight sliding rail 232, hook-shaped push rod 233, linking mobile column 234, reset Spring 235, the linking mobile column 234 are embedded in straight 232 inside groove of sliding rail and flexible connection, the horizontal peace of the reset spring 235 Loaded between two linking mobile columns 234, the linking mobile column 234 is in hook structures, and 234 one end of the linking mobile column are embedding Enter extraneous 24 inside of control device and hinge connects, the mounting electricity storage pack 231 is set to 24 rear of extraneous control device.

External world's control device 24 includes central axis 241, force rod 242, engaging column 243, return spring 244, stress Block 245, support block 246, the central axis 241 is embedded in 242 one end of force rod and hinge connects, and the force rod 242 is far from One end of mandrel 241 is connected with engaging column 243, and the engaging column 243 is welded in 245 bottom end of force block, the return spring 244 are welded between two force blocks 245 in level, and described 234 one end of linking mobile column is embedded in 241 inside of central axis and cuts with scissors Chain link, the mounting electricity storage pack 231 are set to 241 rear of central axis, and the shake drive apparatus 22 includes forced spring 221, installation Force block 222, shake trigger wheel 224, magnetic field wheel 225, leads energy bar 226,221 vertical welding of forced spring at transmission shaft 223 In installation 222 bottom end of force block, through shake trigger wheel 224, the transmission shaft 223 is separate to be trembled for described 223 one end of transmission shaft One end of dynamic trigger wheel 224 is embedded in 225 inside of magnetic field wheel and is located on same axle center, and the energy bar 226 of leading is taken turns set on magnetic field 225 tops.

The promotion group 26 to be triggered include magnetic field ball 261, conductor 262, magnetic field sliding block 263, spring 264, sliding rail 265, Magnetizer 266, the magnetic field ball 261 set there are two and are symmetrically arranged on 262 two sides of conductor, and the magnetic field sliding block 263 is embedded in 265 inside groove of sliding rail and flexible connection, the spring 264 are welded in 263 outer surface of magnetic field sliding block, the cunning in level orientation one end Rail 265 sets there are two and is installed on that 266 two sides of magnetizer are symmetrical, and the inclined push block 275 is welded in magnetic field sliding block 263 Bottom end.

The push card core apparatus 21 includes setting core lattice 211, the core of the card block 212, connecting layer 213, drill head 214, limit layer 215, uniform welding is in 213 side surface of connecting layer in vertical direction for the core of the card block 212, and the connecting layer 213 is far from the core of the card block 212 one end fits in limit 215 outer surface of layer, and the drill head 214 is set to 215 lower section of limit layer, described to set core lattice 211 Two sides are equipped with the core of the card block 212 and symmetrical, and the core of the card block 212 is connected by connecting layer 213 with layer 215 is limited.

The hand-held control equipment 25 includes leading ergosphere 251, inductive slot 252, triggering block 253, secondary spring 254, stress Laminate 255, quick conductor 256, conducting wire 257,251 upper and lower ends of ergosphere of leading are equipped with secondary spring 254 and are located at center Between, the secondary spring 254 is installed on 255 inner surface of stress laminate, the triggering block 253 far from the one end for leading ergosphere 251 If there are two and be installed on inclined two sides in 255 bottom end of stress laminate and symmetrical, the inductive slot 252 and triggering block 253 are mutually embedding Set, the ergosphere 251 of leading set there are two and are located at quick 256 both ends of conductor, 256 electricity of 257 top of conducting wire and quick conductor Connection.

When it is needed to its surface drilling, its stress laminate 255 is pressed down by the external world, to be assisted bullet Spring 254 is squeezed, so that the triggering block 253 for being mounted on bottom is moved to inside inductive slot 252, will be generated after the two contact Energy is transmitted in mounting electricity storage pack 231 by conducting wire 257, makes it to being led its energy by leading ergosphere 251 in quick conductor 256 Mounting electricity storage pack 231 leads the electric energy of its internal script in energy bar 226, makes it full of magnetic field, thus mutually exclusive by magnetic field Push moving field wheel 225 drive transmission shaft 223 rotate, transmission shaft 223 rotate during, be mounted on the shake of outer surface Trigger wheel 224 will be rotated together with it, to push installation force block 222 to drive drill head by itself special shape When it completes the operation of drilling, its stress laminate 255 is unclamped, is led to drill to it for 214 intermittent shakes It crosses extraneous power to exert a force to its force block 245, when force block 245 moves inside, central axis will be passed through by force rod 242 The hook-shaped push rod 233 of 241 tiltings, so that the linking mobile column 234 being located in hook-shaped 233 hook of push rod moves inside along its promotion, Until magnetic field ball 261 touches together with conductor 262, after three's contact, energy is imported in magnetizer 266, magnetic is made it through The mutually exclusive power in field pushes magnetic field sliding block 263 mobile along sliding rail 265, during magnetic field sliding block 263 is mobile, by band The dynamic inclined push block 275 for being mounted on outer surface together, when inclined push block 275 is moved to certain position, is limited pushing Pushing block 273 moves down, to be limited layer 215 and connecting layer 213, the core of the card block 212 together by auxiliary pulley 272 It releases, after its stone is clamped, takes out.

Spring 264 described in the utility model is a kind of using the elastic machine components come work, is made of elastic material Part deformation occurs under external force, remove external force after again restore to the original state, also make " spring ", be generally made of spring steel, The complicated multiplicity of the type of spring mainly has helical spring, scroll spring, flat spring, heterotypic spring etc., the cunning by shape point Rail 265 is also known as guide rail, slideway, refers to the drawer being fixed on the cabinet body of furniture, for furniture or the movable hardware company of cabinet plate discrepancy Relay part, the drawer that sliding rail is suitable for the wooden furniture such as with steel drawer such as cabinet, furniture, official document cabinet, bathroom cabinet are connect.

The utility model solves the problems, such as it is for the unbearable device of current concrete road surface, and function is more single One, it can accurately high speed drill on concrete road surface, but its equipment will directly take out after drilling, it is more difficult to will in it The core in portion is taken out of together, so that needing to carry out secondary operation to it, is more troublesome, and the utility model is mutual by above-mentioned component Combination, the utility model, which uses, after its drilling, to pass through the external world on the basis of it passes through original rapid drilling Power, its internal stone for boring out separation is taken out together.

Claims

1. municipal works detection concrete road surface boring and coring device, including drilling operation head (1), coring control cabinet (2), hand Clamping equipment (3), handheld drill nose end (4), joining rod (5) are controlled, the drilling operation head (1) is embedded in coring control cabinet (2) bottom End is internal, and the joining rod (5) is embedded in the one end of coring control cabinet (2) far from drilling operation head (1), and the manual clamping is set Standby (3) one end is located inside coring control cabinet (2) top and is flexibly connected, and the joining rod (5) is far from coring control cabinet (2) One end is installed vertically on handheld drill nose end (4) bottom end and is electrically connected by conducting wire, it is characterised in that:

The coring control cabinet (2) includes push card core apparatus (21), shake drive apparatus (22), clamps to push and trigger equipment (23), extraneous control device (24), hand-held control equipment (25), promotion group to be triggered (26), auxiliary pushing device (27), protection Shell (28), the push card core apparatus (21) set there are two and are located at guard shield (28) inside bottom both ends, the shake Drive apparatus (22) is set to push card core apparatus (21) oblique upper, and the promotion group (26) to be triggered is installed on clamping and pushes triggering Middle below equipment (23), described one end for clamping promotion triggering equipment (23) far from promotion group (26) to be triggered and extraneous control Device (24) bottom end hinge connection processed, the T-shaped structure of the hand-held control equipment (25), the hand-held control equipment (25) are vertical It is embedded in inside guard shield (28) top and is located at middle, the auxiliary pushing device (27) is welded in promotion group to be triggered (26) bottom end.

2. municipal works detection concrete road surface boring and coring device according to claim 1, it is characterised in that: described Auxiliary pushing device (27) include squeeze spring (271), auxiliary pulley (272), limit pushing block (273), push wheel (274), Inclined push block (275), extruding spring (271) vertical welding is in limit pushing block (273) side bottom end partially, the auxiliary Pulley (272) outer surface is flexibly connected with limit pushing block (273), the rectangular triangular structure of the inclined push block (275), The promotion wheel (274) is embedded in inclined push block (275) and tilts an end face, and the inclined push block (275) is welded in wait touch Send out promotion group (26) bottom end.

3. municipal works detection concrete road surface boring and coring device according to claim 1, it is characterised in that: described Clamping and pushing triggering equipment (23) includes mounting electricity storage pack (231), straight sliding rail (232), hook-shaped push rod (233), linking mobile column (234), reset spring (235), the linking mobile column (234) is embedded in straight sliding rail (232) inside groove and flexible connection, described multiple Position spring (235) is horizontally installed between two linking mobile columns (234), and the linking mobile column (234) is in hook structures, institute It states linking mobile column (234) one end and is embedded in that extraneous control device (24) is internal and hinge connects, the mounting electricity storage pack (231) is set to Extraneous control device (24) rear.

4. municipal works detection concrete road surface boring and coring device according to claim 3, it is characterised in that: described Extraneous control device (24) includes central axis (241), force rod (242), engaging column (243), return spring (244), force block (245), support block (246), the central axis (241) is embedded in force rod (242) one end and hinge connects, the force rod (242) one end far from central axis (241) is connected with engaging column (243), and the engaging column (243) is welded in force block (245) bottom end, the return spring (244) are welded between two force blocks (245) in level, the linking mobile column (234) one end is embedded in central axis (241) inside and hinge connects, and the mounting electricity storage pack (231) is set to central axis (241) rear.

5. municipal works detection concrete road surface boring and coring device according to claim 1, it is characterised in that: described Shake drive apparatus (22) includes forced spring (221), installation force block (222), transmission shaft (223), shake trigger wheel (224), magnetic field wheel (225), lead can bar (226), forced spring (221) vertical welding in installation force block (222) bottom end, Described transmission shaft (223) one end is through shake trigger wheel (224), and the transmission shaft (223) is far from shake trigger wheel (224) One end is embedded in magnetic field wheel (225) inside and is located on same axle center, and the energy bar (226) of leading is set to magnetic field wheel (225) top.

6. municipal works detection concrete road surface boring and coring device according to claim 2, it is characterised in that: described Promotion group (26) to be triggered include magnetic field ball (261), conductor (262), magnetic field sliding block (263), spring (264), sliding rail (265), Magnetizer (266), the magnetic field ball (261) set there are two and are symmetrically arranged on conductor (262) two sides, the magnetic field sliding block (263) it is embedded in sliding rail (265) inside groove and flexible connection, the spring (264) is welded in magnetic field sliding block in level orientation one end (263) outer surface, the sliding rail (265) sets there are two and symmetrical, the inclined push that is installed on magnetizer (266) two sides Block (275) is welded in magnetic field sliding block (263) bottom end.

7. municipal works detection concrete road surface boring and coring device according to claim 1, it is characterised in that: described Push card core apparatus (21) includes setting core lattice (211), the core of the card block (212), connecting layer (213), drill head (214), limit layer (215), for uniform welding in connecting layer (213) side surface, the connecting layer (213) is remote in vertical direction for the core of the card block (212) One end from the core of the card block (212) fits in limit layer (215) outer surface, and the drill head (214) is set under limit layer (215) Side, described core lattice (211) two sides of setting are equipped with the core of the card block (212) and symmetrical, and the core of the card block (212) passes through connecting layer (213) it is connected with limit layer (215).

8. municipal works detection concrete road surface boring and coring device according to claim 1, it is characterised in that: described Hand-held control equipment (25) includes leading ergosphere (251), inductive slot (252), triggering block (253), secondary spring (254), being forced Body (255), quick conductor (256), conducting wire (257), it is described lead ergosphere (251) upper and lower ends be equipped with secondary spring (254) and Positioned at middle, the secondary spring (254) is installed on stress laminate (255) inner surface, institute far from the one end for leading ergosphere (251) Triggering block (253) is stated to set there are two and be installed on the inclined two sides in stress laminate (255) bottom end and symmetrical, the inductive slot (252) it is nested with triggering block (253), the ergosphere (251) of leading sets there are two and be located at quick conductor (256) both ends, described Conducting wire (257) top is electrically connected with quick conductor (256).